diff --git a/backend/Gemfile b/backend/Gemfile
index 309c0bb..1c76afc 100644
--- a/backend/Gemfile
+++ b/backend/Gemfile
@@ -35,6 +35,7 @@ gem "thruster", require: false
 # Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin Ajax possible
 gem "rack-cors"
 gem 'jwt'
+gem 'sprockets-rails'
 
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index d23b681..6ffef1d 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -276,6 +276,13 @@ GEM
       fugit (~> 1.11.0)
       railties (>= 7.1)
       thor (~> 1.3.1)
+    sprockets (4.2.1)
+      concurrent-ruby (~> 1.0)
+      rack (>= 2.2.4, < 4)
+    sprockets-rails (3.5.2)
+      actionpack (>= 6.1)
+      activesupport (>= 6.1)
+      sprockets (>= 3.0.0)
     sqlite3 (2.6.0-aarch64-linux-gnu)
     sqlite3 (2.6.0-aarch64-linux-musl)
     sqlite3 (2.6.0-arm-linux-gnu)
@@ -338,6 +345,7 @@ DEPENDENCIES
   solid_cable
   solid_cache
   solid_queue
+  sprockets-rails
   sqlite3 (>= 2.1)
   thruster
   tzinfo-data
diff --git a/backend/app/assets/config/manifest.js b/backend/app/assets/config/manifest.js
new file mode 100644
index 0000000..b16e53d
--- /dev/null
+++ b/backend/app/assets/config/manifest.js
@@ -0,0 +1,3 @@
+//= link_tree ../images
+//= link_directory ../javascripts .js
+//= link_directory ../stylesheets .css
diff --git a/backend/app/assets/images/.gitkeep b/backend/app/assets/images/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/backend/app/assets/javascripts/.gitkeep b/backend/app/assets/javascripts/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/backend/app/assets/stylesheets/.gitkeep b/backend/app/assets/stylesheets/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/backend/public/assets/.sprockets-manifest-bc72bf50aa9693fc0bfc25057f1a5282.json b/backend/public/assets/.sprockets-manifest-bc72bf50aa9693fc0bfc25057f1a5282.json
new file mode 100644
index 0000000..83d14f4
--- /dev/null
+++ b/backend/public/assets/.sprockets-manifest-bc72bf50aa9693fc0bfc25057f1a5282.json
@@ -0,0 +1 @@
+{"files":{"manifest-6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167.js":{"logical_path":"manifest.js","mtime":"2025-02-26T00:16:38+09:00","size":3,"digest":"6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167","integrity":"sha256-ajz1GSNU9xYVrFEDSz6Xwg7amWQ/yvW75tQa1ZvRIWc="},"actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js":{"logical_path":"actiontext.js","mtime":"2025-02-26T00:16:38+09:00","size":30872,"digest":"9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d","integrity":"sha256-nMv2gkUdQ5YR/loEjlUVfFYDiEDrtKgpJDfrVf0xyD0="},"actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js":{"logical_path":"actiontext.esm.js","mtime":"2025-02-26T00:16:38+09:00","size":29011,"digest":"6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c","integrity":"sha256-Z5DU2vVFjNbrjeLVbnVKNAyuupCcspUqNftHiVVJPYw="},"trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js":{"logical_path":"trix.js","mtime":"2025-02-26T00:16:38+09:00","size":512990,"digest":"488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc","integrity":"sha256-SIrIi1Dt7oqrc92CbplnB17tkAChP9E8vMF3RfhmUMw="},"trix-4c7f56767699ae6c08f21004c9dc23a1b76b0734b0fca61d4534900ee0fef211.css":{"logical_path":"trix.css","mtime":"2025-02-26T00:16:38+09:00","size":20027,"digest":"4c7f56767699ae6c08f21004c9dc23a1b76b0734b0fca61d4534900ee0fef211","integrity":"sha256-TH9WdnaZrmwI8hAEydwjobdrBzSw/KYdRTSQDuD+8hE="},"activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js":{"logical_path":"activestorage.js","mtime":"2025-02-26T00:16:38+09:00","size":29420,"digest":"cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2","integrity":"sha256-zyKkl9GVbo8NPsUPRdaJYaoNE47gYoAsNq44TvsmCqI="},"activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js":{"logical_path":"activestorage.esm.js","mtime":"2025-02-26T00:16:38+09:00","size":27262,"digest":"8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485","integrity":"sha256-i7AoIo5iLFBQGz6yacvkBEpG2ge1ZakOWubyIdwG5IU="},"actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js":{"logical_path":"actioncable.js","mtime":"2025-02-26T00:16:38+09:00","size":16474,"digest":"1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e","integrity":"sha256-GiOf+WZEvI/WJvh6dBdbTufq/SAfUDQDSkM8ItjE3D4="},"actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js":{"logical_path":"actioncable.esm.js","mtime":"2025-02-26T00:16:38+09:00","size":14813,"digest":"555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0","integrity":"sha256-VVZ55E8Rm+en5UEh/KC+sKWDLykzwaHtzQUVu6+tIuA="}},"assets":{"manifest.js":"manifest-6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167.js","actiontext.js":"actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js","actiontext.esm.js":"actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js","trix.js":"trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js","trix.css":"trix-4c7f56767699ae6c08f21004c9dc23a1b76b0734b0fca61d4534900ee0fef211.css","activestorage.js":"activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js","activestorage.esm.js":"activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js","actioncable.js":"actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js","actioncable.esm.js":"actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js"}}
\ No newline at end of file
diff --git a/backend/public/assets/actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js b/backend/public/assets/actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js
new file mode 100644
index 0000000..5fc9943
--- /dev/null
+++ b/backend/public/assets/actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js
@@ -0,0 +1,510 @@
+(function(global, factory) {
+  typeof exports === "object" && typeof module !== "undefined" ? factory(exports) : typeof define === "function" && define.amd ? define([ "exports" ], factory) : (global = typeof globalThis !== "undefined" ? globalThis : global || self, 
+  factory(global.ActionCable = {}));
+})(this, (function(exports) {
+  "use strict";
+  var adapters = {
+    logger: typeof console !== "undefined" ? console : undefined,
+    WebSocket: typeof WebSocket !== "undefined" ? WebSocket : undefined
+  };
+  var logger = {
+    log(...messages) {
+      if (this.enabled) {
+        messages.push(Date.now());
+        adapters.logger.log("[ActionCable]", ...messages);
+      }
+    }
+  };
+  const now = () => (new Date).getTime();
+  const secondsSince = time => (now() - time) / 1e3;
+  class ConnectionMonitor {
+    constructor(connection) {
+      this.visibilityDidChange = this.visibilityDidChange.bind(this);
+      this.connection = connection;
+      this.reconnectAttempts = 0;
+    }
+    start() {
+      if (!this.isRunning()) {
+        this.startedAt = now();
+        delete this.stoppedAt;
+        this.startPolling();
+        addEventListener("visibilitychange", this.visibilityDidChange);
+        logger.log(`ConnectionMonitor started. stale threshold = ${this.constructor.staleThreshold} s`);
+      }
+    }
+    stop() {
+      if (this.isRunning()) {
+        this.stoppedAt = now();
+        this.stopPolling();
+        removeEventListener("visibilitychange", this.visibilityDidChange);
+        logger.log("ConnectionMonitor stopped");
+      }
+    }
+    isRunning() {
+      return this.startedAt && !this.stoppedAt;
+    }
+    recordMessage() {
+      this.pingedAt = now();
+    }
+    recordConnect() {
+      this.reconnectAttempts = 0;
+      delete this.disconnectedAt;
+      logger.log("ConnectionMonitor recorded connect");
+    }
+    recordDisconnect() {
+      this.disconnectedAt = now();
+      logger.log("ConnectionMonitor recorded disconnect");
+    }
+    startPolling() {
+      this.stopPolling();
+      this.poll();
+    }
+    stopPolling() {
+      clearTimeout(this.pollTimeout);
+    }
+    poll() {
+      this.pollTimeout = setTimeout((() => {
+        this.reconnectIfStale();
+        this.poll();
+      }), this.getPollInterval());
+    }
+    getPollInterval() {
+      const {staleThreshold: staleThreshold, reconnectionBackoffRate: reconnectionBackoffRate} = this.constructor;
+      const backoff = Math.pow(1 + reconnectionBackoffRate, Math.min(this.reconnectAttempts, 10));
+      const jitterMax = this.reconnectAttempts === 0 ? 1 : reconnectionBackoffRate;
+      const jitter = jitterMax * Math.random();
+      return staleThreshold * 1e3 * backoff * (1 + jitter);
+    }
+    reconnectIfStale() {
+      if (this.connectionIsStale()) {
+        logger.log(`ConnectionMonitor detected stale connection. reconnectAttempts = ${this.reconnectAttempts}, time stale = ${secondsSince(this.refreshedAt)} s, stale threshold = ${this.constructor.staleThreshold} s`);
+        this.reconnectAttempts++;
+        if (this.disconnectedRecently()) {
+          logger.log(`ConnectionMonitor skipping reopening recent disconnect. time disconnected = ${secondsSince(this.disconnectedAt)} s`);
+        } else {
+          logger.log("ConnectionMonitor reopening");
+          this.connection.reopen();
+        }
+      }
+    }
+    get refreshedAt() {
+      return this.pingedAt ? this.pingedAt : this.startedAt;
+    }
+    connectionIsStale() {
+      return secondsSince(this.refreshedAt) > this.constructor.staleThreshold;
+    }
+    disconnectedRecently() {
+      return this.disconnectedAt && secondsSince(this.disconnectedAt) < this.constructor.staleThreshold;
+    }
+    visibilityDidChange() {
+      if (document.visibilityState === "visible") {
+        setTimeout((() => {
+          if (this.connectionIsStale() || !this.connection.isOpen()) {
+            logger.log(`ConnectionMonitor reopening stale connection on visibilitychange. visibilityState = ${document.visibilityState}`);
+            this.connection.reopen();
+          }
+        }), 200);
+      }
+    }
+  }
+  ConnectionMonitor.staleThreshold = 6;
+  ConnectionMonitor.reconnectionBackoffRate = .15;
+  var INTERNAL = {
+    message_types: {
+      welcome: "welcome",
+      disconnect: "disconnect",
+      ping: "ping",
+      confirmation: "confirm_subscription",
+      rejection: "reject_subscription"
+    },
+    disconnect_reasons: {
+      unauthorized: "unauthorized",
+      invalid_request: "invalid_request",
+      server_restart: "server_restart",
+      remote: "remote"
+    },
+    default_mount_path: "/cable",
+    protocols: [ "actioncable-v1-json", "actioncable-unsupported" ]
+  };
+  const {message_types: message_types, protocols: protocols} = INTERNAL;
+  const supportedProtocols = protocols.slice(0, protocols.length - 1);
+  const indexOf = [].indexOf;
+  class Connection {
+    constructor(consumer) {
+      this.open = this.open.bind(this);
+      this.consumer = consumer;
+      this.subscriptions = this.consumer.subscriptions;
+      this.monitor = new ConnectionMonitor(this);
+      this.disconnected = true;
+    }
+    send(data) {
+      if (this.isOpen()) {
+        this.webSocket.send(JSON.stringify(data));
+        return true;
+      } else {
+        return false;
+      }
+    }
+    open() {
+      if (this.isActive()) {
+        logger.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`);
+        return false;
+      } else {
+        const socketProtocols = [ ...protocols, ...this.consumer.subprotocols || [] ];
+        logger.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${socketProtocols}`);
+        if (this.webSocket) {
+          this.uninstallEventHandlers();
+        }
+        this.webSocket = new adapters.WebSocket(this.consumer.url, socketProtocols);
+        this.installEventHandlers();
+        this.monitor.start();
+        return true;
+      }
+    }
+    close({allowReconnect: allowReconnect} = {
+      allowReconnect: true
+    }) {
+      if (!allowReconnect) {
+        this.monitor.stop();
+      }
+      if (this.isOpen()) {
+        return this.webSocket.close();
+      }
+    }
+    reopen() {
+      logger.log(`Reopening WebSocket, current state is ${this.getState()}`);
+      if (this.isActive()) {
+        try {
+          return this.close();
+        } catch (error) {
+          logger.log("Failed to reopen WebSocket", error);
+        } finally {
+          logger.log(`Reopening WebSocket in ${this.constructor.reopenDelay}ms`);
+          setTimeout(this.open, this.constructor.reopenDelay);
+        }
+      } else {
+        return this.open();
+      }
+    }
+    getProtocol() {
+      if (this.webSocket) {
+        return this.webSocket.protocol;
+      }
+    }
+    isOpen() {
+      return this.isState("open");
+    }
+    isActive() {
+      return this.isState("open", "connecting");
+    }
+    triedToReconnect() {
+      return this.monitor.reconnectAttempts > 0;
+    }
+    isProtocolSupported() {
+      return indexOf.call(supportedProtocols, this.getProtocol()) >= 0;
+    }
+    isState(...states) {
+      return indexOf.call(states, this.getState()) >= 0;
+    }
+    getState() {
+      if (this.webSocket) {
+        for (let state in adapters.WebSocket) {
+          if (adapters.WebSocket[state] === this.webSocket.readyState) {
+            return state.toLowerCase();
+          }
+        }
+      }
+      return null;
+    }
+    installEventHandlers() {
+      for (let eventName in this.events) {
+        const handler = this.events[eventName].bind(this);
+        this.webSocket[`on${eventName}`] = handler;
+      }
+    }
+    uninstallEventHandlers() {
+      for (let eventName in this.events) {
+        this.webSocket[`on${eventName}`] = function() {};
+      }
+    }
+  }
+  Connection.reopenDelay = 500;
+  Connection.prototype.events = {
+    message(event) {
+      if (!this.isProtocolSupported()) {
+        return;
+      }
+      const {identifier: identifier, message: message, reason: reason, reconnect: reconnect, type: type} = JSON.parse(event.data);
+      this.monitor.recordMessage();
+      switch (type) {
+       case message_types.welcome:
+        if (this.triedToReconnect()) {
+          this.reconnectAttempted = true;
+        }
+        this.monitor.recordConnect();
+        return this.subscriptions.reload();
+
+       case message_types.disconnect:
+        logger.log(`Disconnecting. Reason: ${reason}`);
+        return this.close({
+          allowReconnect: reconnect
+        });
+
+       case message_types.ping:
+        return null;
+
+       case message_types.confirmation:
+        this.subscriptions.confirmSubscription(identifier);
+        if (this.reconnectAttempted) {
+          this.reconnectAttempted = false;
+          return this.subscriptions.notify(identifier, "connected", {
+            reconnected: true
+          });
+        } else {
+          return this.subscriptions.notify(identifier, "connected", {
+            reconnected: false
+          });
+        }
+
+       case message_types.rejection:
+        return this.subscriptions.reject(identifier);
+
+       default:
+        return this.subscriptions.notify(identifier, "received", message);
+      }
+    },
+    open() {
+      logger.log(`WebSocket onopen event, using '${this.getProtocol()}' subprotocol`);
+      this.disconnected = false;
+      if (!this.isProtocolSupported()) {
+        logger.log("Protocol is unsupported. Stopping monitor and disconnecting.");
+        return this.close({
+          allowReconnect: false
+        });
+      }
+    },
+    close(event) {
+      logger.log("WebSocket onclose event");
+      if (this.disconnected) {
+        return;
+      }
+      this.disconnected = true;
+      this.monitor.recordDisconnect();
+      return this.subscriptions.notifyAll("disconnected", {
+        willAttemptReconnect: this.monitor.isRunning()
+      });
+    },
+    error() {
+      logger.log("WebSocket onerror event");
+    }
+  };
+  const extend = function(object, properties) {
+    if (properties != null) {
+      for (let key in properties) {
+        const value = properties[key];
+        object[key] = value;
+      }
+    }
+    return object;
+  };
+  class Subscription {
+    constructor(consumer, params = {}, mixin) {
+      this.consumer = consumer;
+      this.identifier = JSON.stringify(params);
+      extend(this, mixin);
+    }
+    perform(action, data = {}) {
+      data.action = action;
+      return this.send(data);
+    }
+    send(data) {
+      return this.consumer.send({
+        command: "message",
+        identifier: this.identifier,
+        data: JSON.stringify(data)
+      });
+    }
+    unsubscribe() {
+      return this.consumer.subscriptions.remove(this);
+    }
+  }
+  class SubscriptionGuarantor {
+    constructor(subscriptions) {
+      this.subscriptions = subscriptions;
+      this.pendingSubscriptions = [];
+    }
+    guarantee(subscription) {
+      if (this.pendingSubscriptions.indexOf(subscription) == -1) {
+        logger.log(`SubscriptionGuarantor guaranteeing ${subscription.identifier}`);
+        this.pendingSubscriptions.push(subscription);
+      } else {
+        logger.log(`SubscriptionGuarantor already guaranteeing ${subscription.identifier}`);
+      }
+      this.startGuaranteeing();
+    }
+    forget(subscription) {
+      logger.log(`SubscriptionGuarantor forgetting ${subscription.identifier}`);
+      this.pendingSubscriptions = this.pendingSubscriptions.filter((s => s !== subscription));
+    }
+    startGuaranteeing() {
+      this.stopGuaranteeing();
+      this.retrySubscribing();
+    }
+    stopGuaranteeing() {
+      clearTimeout(this.retryTimeout);
+    }
+    retrySubscribing() {
+      this.retryTimeout = setTimeout((() => {
+        if (this.subscriptions && typeof this.subscriptions.subscribe === "function") {
+          this.pendingSubscriptions.map((subscription => {
+            logger.log(`SubscriptionGuarantor resubscribing ${subscription.identifier}`);
+            this.subscriptions.subscribe(subscription);
+          }));
+        }
+      }), 500);
+    }
+  }
+  class Subscriptions {
+    constructor(consumer) {
+      this.consumer = consumer;
+      this.guarantor = new SubscriptionGuarantor(this);
+      this.subscriptions = [];
+    }
+    create(channelName, mixin) {
+      const channel = channelName;
+      const params = typeof channel === "object" ? channel : {
+        channel: channel
+      };
+      const subscription = new Subscription(this.consumer, params, mixin);
+      return this.add(subscription);
+    }
+    add(subscription) {
+      this.subscriptions.push(subscription);
+      this.consumer.ensureActiveConnection();
+      this.notify(subscription, "initialized");
+      this.subscribe(subscription);
+      return subscription;
+    }
+    remove(subscription) {
+      this.forget(subscription);
+      if (!this.findAll(subscription.identifier).length) {
+        this.sendCommand(subscription, "unsubscribe");
+      }
+      return subscription;
+    }
+    reject(identifier) {
+      return this.findAll(identifier).map((subscription => {
+        this.forget(subscription);
+        this.notify(subscription, "rejected");
+        return subscription;
+      }));
+    }
+    forget(subscription) {
+      this.guarantor.forget(subscription);
+      this.subscriptions = this.subscriptions.filter((s => s !== subscription));
+      return subscription;
+    }
+    findAll(identifier) {
+      return this.subscriptions.filter((s => s.identifier === identifier));
+    }
+    reload() {
+      return this.subscriptions.map((subscription => this.subscribe(subscription)));
+    }
+    notifyAll(callbackName, ...args) {
+      return this.subscriptions.map((subscription => this.notify(subscription, callbackName, ...args)));
+    }
+    notify(subscription, callbackName, ...args) {
+      let subscriptions;
+      if (typeof subscription === "string") {
+        subscriptions = this.findAll(subscription);
+      } else {
+        subscriptions = [ subscription ];
+      }
+      return subscriptions.map((subscription => typeof subscription[callbackName] === "function" ? subscription[callbackName](...args) : undefined));
+    }
+    subscribe(subscription) {
+      if (this.sendCommand(subscription, "subscribe")) {
+        this.guarantor.guarantee(subscription);
+      }
+    }
+    confirmSubscription(identifier) {
+      logger.log(`Subscription confirmed ${identifier}`);
+      this.findAll(identifier).map((subscription => this.guarantor.forget(subscription)));
+    }
+    sendCommand(subscription, command) {
+      const {identifier: identifier} = subscription;
+      return this.consumer.send({
+        command: command,
+        identifier: identifier
+      });
+    }
+  }
+  class Consumer {
+    constructor(url) {
+      this._url = url;
+      this.subscriptions = new Subscriptions(this);
+      this.connection = new Connection(this);
+      this.subprotocols = [];
+    }
+    get url() {
+      return createWebSocketURL(this._url);
+    }
+    send(data) {
+      return this.connection.send(data);
+    }
+    connect() {
+      return this.connection.open();
+    }
+    disconnect() {
+      return this.connection.close({
+        allowReconnect: false
+      });
+    }
+    ensureActiveConnection() {
+      if (!this.connection.isActive()) {
+        return this.connection.open();
+      }
+    }
+    addSubProtocol(subprotocol) {
+      this.subprotocols = [ ...this.subprotocols, subprotocol ];
+    }
+  }
+  function createWebSocketURL(url) {
+    if (typeof url === "function") {
+      url = url();
+    }
+    if (url && !/^wss?:/i.test(url)) {
+      const a = document.createElement("a");
+      a.href = url;
+      a.href = a.href;
+      a.protocol = a.protocol.replace("http", "ws");
+      return a.href;
+    } else {
+      return url;
+    }
+  }
+  function createConsumer(url = getConfig("url") || INTERNAL.default_mount_path) {
+    return new Consumer(url);
+  }
+  function getConfig(name) {
+    const element = document.head.querySelector(`meta[name='action-cable-${name}']`);
+    if (element) {
+      return element.getAttribute("content");
+    }
+  }
+  exports.Connection = Connection;
+  exports.ConnectionMonitor = ConnectionMonitor;
+  exports.Consumer = Consumer;
+  exports.INTERNAL = INTERNAL;
+  exports.Subscription = Subscription;
+  exports.SubscriptionGuarantor = SubscriptionGuarantor;
+  exports.Subscriptions = Subscriptions;
+  exports.adapters = adapters;
+  exports.createConsumer = createConsumer;
+  exports.createWebSocketURL = createWebSocketURL;
+  exports.getConfig = getConfig;
+  exports.logger = logger;
+  Object.defineProperty(exports, "__esModule", {
+    value: true
+  });
+}));
diff --git a/backend/public/assets/actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js.gz b/backend/public/assets/actioncable-1a239ff96644bc8fd626f87a74175b4ee7eafd201f5034034a433c22d8c4dc3e.js.gz
new file mode 100644
index 0000000..8ffa46b
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diff --git a/backend/public/assets/actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js b/backend/public/assets/actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js
new file mode 100644
index 0000000..1832009
--- /dev/null
+++ b/backend/public/assets/actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js
@@ -0,0 +1,512 @@
+var adapters = {
+  logger: typeof console !== "undefined" ? console : undefined,
+  WebSocket: typeof WebSocket !== "undefined" ? WebSocket : undefined
+};
+
+var logger = {
+  log(...messages) {
+    if (this.enabled) {
+      messages.push(Date.now());
+      adapters.logger.log("[ActionCable]", ...messages);
+    }
+  }
+};
+
+const now = () => (new Date).getTime();
+
+const secondsSince = time => (now() - time) / 1e3;
+
+class ConnectionMonitor {
+  constructor(connection) {
+    this.visibilityDidChange = this.visibilityDidChange.bind(this);
+    this.connection = connection;
+    this.reconnectAttempts = 0;
+  }
+  start() {
+    if (!this.isRunning()) {
+      this.startedAt = now();
+      delete this.stoppedAt;
+      this.startPolling();
+      addEventListener("visibilitychange", this.visibilityDidChange);
+      logger.log(`ConnectionMonitor started. stale threshold = ${this.constructor.staleThreshold} s`);
+    }
+  }
+  stop() {
+    if (this.isRunning()) {
+      this.stoppedAt = now();
+      this.stopPolling();
+      removeEventListener("visibilitychange", this.visibilityDidChange);
+      logger.log("ConnectionMonitor stopped");
+    }
+  }
+  isRunning() {
+    return this.startedAt && !this.stoppedAt;
+  }
+  recordMessage() {
+    this.pingedAt = now();
+  }
+  recordConnect() {
+    this.reconnectAttempts = 0;
+    delete this.disconnectedAt;
+    logger.log("ConnectionMonitor recorded connect");
+  }
+  recordDisconnect() {
+    this.disconnectedAt = now();
+    logger.log("ConnectionMonitor recorded disconnect");
+  }
+  startPolling() {
+    this.stopPolling();
+    this.poll();
+  }
+  stopPolling() {
+    clearTimeout(this.pollTimeout);
+  }
+  poll() {
+    this.pollTimeout = setTimeout((() => {
+      this.reconnectIfStale();
+      this.poll();
+    }), this.getPollInterval());
+  }
+  getPollInterval() {
+    const {staleThreshold: staleThreshold, reconnectionBackoffRate: reconnectionBackoffRate} = this.constructor;
+    const backoff = Math.pow(1 + reconnectionBackoffRate, Math.min(this.reconnectAttempts, 10));
+    const jitterMax = this.reconnectAttempts === 0 ? 1 : reconnectionBackoffRate;
+    const jitter = jitterMax * Math.random();
+    return staleThreshold * 1e3 * backoff * (1 + jitter);
+  }
+  reconnectIfStale() {
+    if (this.connectionIsStale()) {
+      logger.log(`ConnectionMonitor detected stale connection. reconnectAttempts = ${this.reconnectAttempts}, time stale = ${secondsSince(this.refreshedAt)} s, stale threshold = ${this.constructor.staleThreshold} s`);
+      this.reconnectAttempts++;
+      if (this.disconnectedRecently()) {
+        logger.log(`ConnectionMonitor skipping reopening recent disconnect. time disconnected = ${secondsSince(this.disconnectedAt)} s`);
+      } else {
+        logger.log("ConnectionMonitor reopening");
+        this.connection.reopen();
+      }
+    }
+  }
+  get refreshedAt() {
+    return this.pingedAt ? this.pingedAt : this.startedAt;
+  }
+  connectionIsStale() {
+    return secondsSince(this.refreshedAt) > this.constructor.staleThreshold;
+  }
+  disconnectedRecently() {
+    return this.disconnectedAt && secondsSince(this.disconnectedAt) < this.constructor.staleThreshold;
+  }
+  visibilityDidChange() {
+    if (document.visibilityState === "visible") {
+      setTimeout((() => {
+        if (this.connectionIsStale() || !this.connection.isOpen()) {
+          logger.log(`ConnectionMonitor reopening stale connection on visibilitychange. visibilityState = ${document.visibilityState}`);
+          this.connection.reopen();
+        }
+      }), 200);
+    }
+  }
+}
+
+ConnectionMonitor.staleThreshold = 6;
+
+ConnectionMonitor.reconnectionBackoffRate = .15;
+
+var INTERNAL = {
+  message_types: {
+    welcome: "welcome",
+    disconnect: "disconnect",
+    ping: "ping",
+    confirmation: "confirm_subscription",
+    rejection: "reject_subscription"
+  },
+  disconnect_reasons: {
+    unauthorized: "unauthorized",
+    invalid_request: "invalid_request",
+    server_restart: "server_restart",
+    remote: "remote"
+  },
+  default_mount_path: "/cable",
+  protocols: [ "actioncable-v1-json", "actioncable-unsupported" ]
+};
+
+const {message_types: message_types, protocols: protocols} = INTERNAL;
+
+const supportedProtocols = protocols.slice(0, protocols.length - 1);
+
+const indexOf = [].indexOf;
+
+class Connection {
+  constructor(consumer) {
+    this.open = this.open.bind(this);
+    this.consumer = consumer;
+    this.subscriptions = this.consumer.subscriptions;
+    this.monitor = new ConnectionMonitor(this);
+    this.disconnected = true;
+  }
+  send(data) {
+    if (this.isOpen()) {
+      this.webSocket.send(JSON.stringify(data));
+      return true;
+    } else {
+      return false;
+    }
+  }
+  open() {
+    if (this.isActive()) {
+      logger.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`);
+      return false;
+    } else {
+      const socketProtocols = [ ...protocols, ...this.consumer.subprotocols || [] ];
+      logger.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${socketProtocols}`);
+      if (this.webSocket) {
+        this.uninstallEventHandlers();
+      }
+      this.webSocket = new adapters.WebSocket(this.consumer.url, socketProtocols);
+      this.installEventHandlers();
+      this.monitor.start();
+      return true;
+    }
+  }
+  close({allowReconnect: allowReconnect} = {
+    allowReconnect: true
+  }) {
+    if (!allowReconnect) {
+      this.monitor.stop();
+    }
+    if (this.isOpen()) {
+      return this.webSocket.close();
+    }
+  }
+  reopen() {
+    logger.log(`Reopening WebSocket, current state is ${this.getState()}`);
+    if (this.isActive()) {
+      try {
+        return this.close();
+      } catch (error) {
+        logger.log("Failed to reopen WebSocket", error);
+      } finally {
+        logger.log(`Reopening WebSocket in ${this.constructor.reopenDelay}ms`);
+        setTimeout(this.open, this.constructor.reopenDelay);
+      }
+    } else {
+      return this.open();
+    }
+  }
+  getProtocol() {
+    if (this.webSocket) {
+      return this.webSocket.protocol;
+    }
+  }
+  isOpen() {
+    return this.isState("open");
+  }
+  isActive() {
+    return this.isState("open", "connecting");
+  }
+  triedToReconnect() {
+    return this.monitor.reconnectAttempts > 0;
+  }
+  isProtocolSupported() {
+    return indexOf.call(supportedProtocols, this.getProtocol()) >= 0;
+  }
+  isState(...states) {
+    return indexOf.call(states, this.getState()) >= 0;
+  }
+  getState() {
+    if (this.webSocket) {
+      for (let state in adapters.WebSocket) {
+        if (adapters.WebSocket[state] === this.webSocket.readyState) {
+          return state.toLowerCase();
+        }
+      }
+    }
+    return null;
+  }
+  installEventHandlers() {
+    for (let eventName in this.events) {
+      const handler = this.events[eventName].bind(this);
+      this.webSocket[`on${eventName}`] = handler;
+    }
+  }
+  uninstallEventHandlers() {
+    for (let eventName in this.events) {
+      this.webSocket[`on${eventName}`] = function() {};
+    }
+  }
+}
+
+Connection.reopenDelay = 500;
+
+Connection.prototype.events = {
+  message(event) {
+    if (!this.isProtocolSupported()) {
+      return;
+    }
+    const {identifier: identifier, message: message, reason: reason, reconnect: reconnect, type: type} = JSON.parse(event.data);
+    this.monitor.recordMessage();
+    switch (type) {
+     case message_types.welcome:
+      if (this.triedToReconnect()) {
+        this.reconnectAttempted = true;
+      }
+      this.monitor.recordConnect();
+      return this.subscriptions.reload();
+
+     case message_types.disconnect:
+      logger.log(`Disconnecting. Reason: ${reason}`);
+      return this.close({
+        allowReconnect: reconnect
+      });
+
+     case message_types.ping:
+      return null;
+
+     case message_types.confirmation:
+      this.subscriptions.confirmSubscription(identifier);
+      if (this.reconnectAttempted) {
+        this.reconnectAttempted = false;
+        return this.subscriptions.notify(identifier, "connected", {
+          reconnected: true
+        });
+      } else {
+        return this.subscriptions.notify(identifier, "connected", {
+          reconnected: false
+        });
+      }
+
+     case message_types.rejection:
+      return this.subscriptions.reject(identifier);
+
+     default:
+      return this.subscriptions.notify(identifier, "received", message);
+    }
+  },
+  open() {
+    logger.log(`WebSocket onopen event, using '${this.getProtocol()}' subprotocol`);
+    this.disconnected = false;
+    if (!this.isProtocolSupported()) {
+      logger.log("Protocol is unsupported. Stopping monitor and disconnecting.");
+      return this.close({
+        allowReconnect: false
+      });
+    }
+  },
+  close(event) {
+    logger.log("WebSocket onclose event");
+    if (this.disconnected) {
+      return;
+    }
+    this.disconnected = true;
+    this.monitor.recordDisconnect();
+    return this.subscriptions.notifyAll("disconnected", {
+      willAttemptReconnect: this.monitor.isRunning()
+    });
+  },
+  error() {
+    logger.log("WebSocket onerror event");
+  }
+};
+
+const extend = function(object, properties) {
+  if (properties != null) {
+    for (let key in properties) {
+      const value = properties[key];
+      object[key] = value;
+    }
+  }
+  return object;
+};
+
+class Subscription {
+  constructor(consumer, params = {}, mixin) {
+    this.consumer = consumer;
+    this.identifier = JSON.stringify(params);
+    extend(this, mixin);
+  }
+  perform(action, data = {}) {
+    data.action = action;
+    return this.send(data);
+  }
+  send(data) {
+    return this.consumer.send({
+      command: "message",
+      identifier: this.identifier,
+      data: JSON.stringify(data)
+    });
+  }
+  unsubscribe() {
+    return this.consumer.subscriptions.remove(this);
+  }
+}
+
+class SubscriptionGuarantor {
+  constructor(subscriptions) {
+    this.subscriptions = subscriptions;
+    this.pendingSubscriptions = [];
+  }
+  guarantee(subscription) {
+    if (this.pendingSubscriptions.indexOf(subscription) == -1) {
+      logger.log(`SubscriptionGuarantor guaranteeing ${subscription.identifier}`);
+      this.pendingSubscriptions.push(subscription);
+    } else {
+      logger.log(`SubscriptionGuarantor already guaranteeing ${subscription.identifier}`);
+    }
+    this.startGuaranteeing();
+  }
+  forget(subscription) {
+    logger.log(`SubscriptionGuarantor forgetting ${subscription.identifier}`);
+    this.pendingSubscriptions = this.pendingSubscriptions.filter((s => s !== subscription));
+  }
+  startGuaranteeing() {
+    this.stopGuaranteeing();
+    this.retrySubscribing();
+  }
+  stopGuaranteeing() {
+    clearTimeout(this.retryTimeout);
+  }
+  retrySubscribing() {
+    this.retryTimeout = setTimeout((() => {
+      if (this.subscriptions && typeof this.subscriptions.subscribe === "function") {
+        this.pendingSubscriptions.map((subscription => {
+          logger.log(`SubscriptionGuarantor resubscribing ${subscription.identifier}`);
+          this.subscriptions.subscribe(subscription);
+        }));
+      }
+    }), 500);
+  }
+}
+
+class Subscriptions {
+  constructor(consumer) {
+    this.consumer = consumer;
+    this.guarantor = new SubscriptionGuarantor(this);
+    this.subscriptions = [];
+  }
+  create(channelName, mixin) {
+    const channel = channelName;
+    const params = typeof channel === "object" ? channel : {
+      channel: channel
+    };
+    const subscription = new Subscription(this.consumer, params, mixin);
+    return this.add(subscription);
+  }
+  add(subscription) {
+    this.subscriptions.push(subscription);
+    this.consumer.ensureActiveConnection();
+    this.notify(subscription, "initialized");
+    this.subscribe(subscription);
+    return subscription;
+  }
+  remove(subscription) {
+    this.forget(subscription);
+    if (!this.findAll(subscription.identifier).length) {
+      this.sendCommand(subscription, "unsubscribe");
+    }
+    return subscription;
+  }
+  reject(identifier) {
+    return this.findAll(identifier).map((subscription => {
+      this.forget(subscription);
+      this.notify(subscription, "rejected");
+      return subscription;
+    }));
+  }
+  forget(subscription) {
+    this.guarantor.forget(subscription);
+    this.subscriptions = this.subscriptions.filter((s => s !== subscription));
+    return subscription;
+  }
+  findAll(identifier) {
+    return this.subscriptions.filter((s => s.identifier === identifier));
+  }
+  reload() {
+    return this.subscriptions.map((subscription => this.subscribe(subscription)));
+  }
+  notifyAll(callbackName, ...args) {
+    return this.subscriptions.map((subscription => this.notify(subscription, callbackName, ...args)));
+  }
+  notify(subscription, callbackName, ...args) {
+    let subscriptions;
+    if (typeof subscription === "string") {
+      subscriptions = this.findAll(subscription);
+    } else {
+      subscriptions = [ subscription ];
+    }
+    return subscriptions.map((subscription => typeof subscription[callbackName] === "function" ? subscription[callbackName](...args) : undefined));
+  }
+  subscribe(subscription) {
+    if (this.sendCommand(subscription, "subscribe")) {
+      this.guarantor.guarantee(subscription);
+    }
+  }
+  confirmSubscription(identifier) {
+    logger.log(`Subscription confirmed ${identifier}`);
+    this.findAll(identifier).map((subscription => this.guarantor.forget(subscription)));
+  }
+  sendCommand(subscription, command) {
+    const {identifier: identifier} = subscription;
+    return this.consumer.send({
+      command: command,
+      identifier: identifier
+    });
+  }
+}
+
+class Consumer {
+  constructor(url) {
+    this._url = url;
+    this.subscriptions = new Subscriptions(this);
+    this.connection = new Connection(this);
+    this.subprotocols = [];
+  }
+  get url() {
+    return createWebSocketURL(this._url);
+  }
+  send(data) {
+    return this.connection.send(data);
+  }
+  connect() {
+    return this.connection.open();
+  }
+  disconnect() {
+    return this.connection.close({
+      allowReconnect: false
+    });
+  }
+  ensureActiveConnection() {
+    if (!this.connection.isActive()) {
+      return this.connection.open();
+    }
+  }
+  addSubProtocol(subprotocol) {
+    this.subprotocols = [ ...this.subprotocols, subprotocol ];
+  }
+}
+
+function createWebSocketURL(url) {
+  if (typeof url === "function") {
+    url = url();
+  }
+  if (url && !/^wss?:/i.test(url)) {
+    const a = document.createElement("a");
+    a.href = url;
+    a.href = a.href;
+    a.protocol = a.protocol.replace("http", "ws");
+    return a.href;
+  } else {
+    return url;
+  }
+}
+
+function createConsumer(url = getConfig("url") || INTERNAL.default_mount_path) {
+  return new Consumer(url);
+}
+
+function getConfig(name) {
+  const element = document.head.querySelector(`meta[name='action-cable-${name}']`);
+  if (element) {
+    return element.getAttribute("content");
+  }
+}
+
+export { Connection, ConnectionMonitor, Consumer, INTERNAL, Subscription, SubscriptionGuarantor, Subscriptions, adapters, createConsumer, createWebSocketURL, getConfig, logger };
diff --git a/backend/public/assets/actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js.gz b/backend/public/assets/actioncable.esm-555679e44f119be7a7e54121fca0beb0a5832f2933c1a1edcd0515bbafad22e0.js.gz
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diff --git a/backend/public/assets/actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js b/backend/public/assets/actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js
new file mode 100644
index 0000000..e61f03c
--- /dev/null
+++ b/backend/public/assets/actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js
@@ -0,0 +1,884 @@
+(function(factory) {
+  typeof define === "function" && define.amd ? define(factory) : factory();
+})((function() {
+  "use strict";
+  var sparkMd5 = {
+    exports: {}
+  };
+  (function(module, exports) {
+    (function(factory) {
+      {
+        module.exports = factory();
+      }
+    })((function(undefined$1) {
+      var hex_chr = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" ];
+      function md5cycle(x, k) {
+        var a = x[0], b = x[1], c = x[2], d = x[3];
+        a += (b & c | ~b & d) + k[0] - 680876936 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[1] - 389564586 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[2] + 606105819 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[3] - 1044525330 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & c | ~b & d) + k[4] - 176418897 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[5] + 1200080426 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[6] - 1473231341 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[7] - 45705983 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & c | ~b & d) + k[8] + 1770035416 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[9] - 1958414417 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[10] - 42063 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[11] - 1990404162 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & c | ~b & d) + k[12] + 1804603682 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[13] - 40341101 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[14] - 1502002290 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[15] + 1236535329 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & d | c & ~d) + k[1] - 165796510 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[6] - 1069501632 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[11] + 643717713 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[0] - 373897302 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b & d | c & ~d) + k[5] - 701558691 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[10] + 38016083 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[15] - 660478335 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[4] - 405537848 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b & d | c & ~d) + k[9] + 568446438 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[14] - 1019803690 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[3] - 187363961 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[8] + 1163531501 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b & d | c & ~d) + k[13] - 1444681467 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[2] - 51403784 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[7] + 1735328473 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[12] - 1926607734 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b ^ c ^ d) + k[5] - 378558 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[8] - 2022574463 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[11] + 1839030562 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[14] - 35309556 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (b ^ c ^ d) + k[1] - 1530992060 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[4] + 1272893353 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[7] - 155497632 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[10] - 1094730640 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (b ^ c ^ d) + k[13] + 681279174 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[0] - 358537222 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[3] - 722521979 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[6] + 76029189 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (b ^ c ^ d) + k[9] - 640364487 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[12] - 421815835 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[15] + 530742520 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[2] - 995338651 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        x[0] = a + x[0] | 0;
+        x[1] = b + x[1] | 0;
+        x[2] = c + x[2] | 0;
+        x[3] = d + x[3] | 0;
+      }
+      function md5blk(s) {
+        var md5blks = [], i;
+        for (i = 0; i < 64; i += 4) {
+          md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);
+        }
+        return md5blks;
+      }
+      function md5blk_array(a) {
+        var md5blks = [], i;
+        for (i = 0; i < 64; i += 4) {
+          md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
+        }
+        return md5blks;
+      }
+      function md51(s) {
+        var n = s.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+        for (i = 64; i <= n; i += 64) {
+          md5cycle(state, md5blk(s.substring(i - 64, i)));
+        }
+        s = s.substring(i - 64);
+        length = s.length;
+        tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
+        }
+        tail[i >> 2] |= 128 << (i % 4 << 3);
+        if (i > 55) {
+          md5cycle(state, tail);
+          for (i = 0; i < 16; i += 1) {
+            tail[i] = 0;
+          }
+        }
+        tmp = n * 8;
+        tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+        lo = parseInt(tmp[2], 16);
+        hi = parseInt(tmp[1], 16) || 0;
+        tail[14] = lo;
+        tail[15] = hi;
+        md5cycle(state, tail);
+        return state;
+      }
+      function md51_array(a) {
+        var n = a.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+        for (i = 64; i <= n; i += 64) {
+          md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
+        }
+        a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
+        length = a.length;
+        tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= a[i] << (i % 4 << 3);
+        }
+        tail[i >> 2] |= 128 << (i % 4 << 3);
+        if (i > 55) {
+          md5cycle(state, tail);
+          for (i = 0; i < 16; i += 1) {
+            tail[i] = 0;
+          }
+        }
+        tmp = n * 8;
+        tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+        lo = parseInt(tmp[2], 16);
+        hi = parseInt(tmp[1], 16) || 0;
+        tail[14] = lo;
+        tail[15] = hi;
+        md5cycle(state, tail);
+        return state;
+      }
+      function rhex(n) {
+        var s = "", j;
+        for (j = 0; j < 4; j += 1) {
+          s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15];
+        }
+        return s;
+      }
+      function hex(x) {
+        var i;
+        for (i = 0; i < x.length; i += 1) {
+          x[i] = rhex(x[i]);
+        }
+        return x.join("");
+      }
+      if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") ;
+      if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
+        (function() {
+          function clamp(val, length) {
+            val = val | 0 || 0;
+            if (val < 0) {
+              return Math.max(val + length, 0);
+            }
+            return Math.min(val, length);
+          }
+          ArrayBuffer.prototype.slice = function(from, to) {
+            var length = this.byteLength, begin = clamp(from, length), end = length, num, target, targetArray, sourceArray;
+            if (to !== undefined$1) {
+              end = clamp(to, length);
+            }
+            if (begin > end) {
+              return new ArrayBuffer(0);
+            }
+            num = end - begin;
+            target = new ArrayBuffer(num);
+            targetArray = new Uint8Array(target);
+            sourceArray = new Uint8Array(this, begin, num);
+            targetArray.set(sourceArray);
+            return target;
+          };
+        })();
+      }
+      function toUtf8(str) {
+        if (/[\u0080-\uFFFF]/.test(str)) {
+          str = unescape(encodeURIComponent(str));
+        }
+        return str;
+      }
+      function utf8Str2ArrayBuffer(str, returnUInt8Array) {
+        var length = str.length, buff = new ArrayBuffer(length), arr = new Uint8Array(buff), i;
+        for (i = 0; i < length; i += 1) {
+          arr[i] = str.charCodeAt(i);
+        }
+        return returnUInt8Array ? arr : buff;
+      }
+      function arrayBuffer2Utf8Str(buff) {
+        return String.fromCharCode.apply(null, new Uint8Array(buff));
+      }
+      function concatenateArrayBuffers(first, second, returnUInt8Array) {
+        var result = new Uint8Array(first.byteLength + second.byteLength);
+        result.set(new Uint8Array(first));
+        result.set(new Uint8Array(second), first.byteLength);
+        return returnUInt8Array ? result : result.buffer;
+      }
+      function hexToBinaryString(hex) {
+        var bytes = [], length = hex.length, x;
+        for (x = 0; x < length - 1; x += 2) {
+          bytes.push(parseInt(hex.substr(x, 2), 16));
+        }
+        return String.fromCharCode.apply(String, bytes);
+      }
+      function SparkMD5() {
+        this.reset();
+      }
+      SparkMD5.prototype.append = function(str) {
+        this.appendBinary(toUtf8(str));
+        return this;
+      };
+      SparkMD5.prototype.appendBinary = function(contents) {
+        this._buff += contents;
+        this._length += contents.length;
+        var length = this._buff.length, i;
+        for (i = 64; i <= length; i += 64) {
+          md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));
+        }
+        this._buff = this._buff.substring(i - 64);
+        return this;
+      };
+      SparkMD5.prototype.end = function(raw) {
+        var buff = this._buff, length = buff.length, i, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], ret;
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);
+        }
+        this._finish(tail, length);
+        ret = hex(this._hash);
+        if (raw) {
+          ret = hexToBinaryString(ret);
+        }
+        this.reset();
+        return ret;
+      };
+      SparkMD5.prototype.reset = function() {
+        this._buff = "";
+        this._length = 0;
+        this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+        return this;
+      };
+      SparkMD5.prototype.getState = function() {
+        return {
+          buff: this._buff,
+          length: this._length,
+          hash: this._hash.slice()
+        };
+      };
+      SparkMD5.prototype.setState = function(state) {
+        this._buff = state.buff;
+        this._length = state.length;
+        this._hash = state.hash;
+        return this;
+      };
+      SparkMD5.prototype.destroy = function() {
+        delete this._hash;
+        delete this._buff;
+        delete this._length;
+      };
+      SparkMD5.prototype._finish = function(tail, length) {
+        var i = length, tmp, lo, hi;
+        tail[i >> 2] |= 128 << (i % 4 << 3);
+        if (i > 55) {
+          md5cycle(this._hash, tail);
+          for (i = 0; i < 16; i += 1) {
+            tail[i] = 0;
+          }
+        }
+        tmp = this._length * 8;
+        tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+        lo = parseInt(tmp[2], 16);
+        hi = parseInt(tmp[1], 16) || 0;
+        tail[14] = lo;
+        tail[15] = hi;
+        md5cycle(this._hash, tail);
+      };
+      SparkMD5.hash = function(str, raw) {
+        return SparkMD5.hashBinary(toUtf8(str), raw);
+      };
+      SparkMD5.hashBinary = function(content, raw) {
+        var hash = md51(content), ret = hex(hash);
+        return raw ? hexToBinaryString(ret) : ret;
+      };
+      SparkMD5.ArrayBuffer = function() {
+        this.reset();
+      };
+      SparkMD5.ArrayBuffer.prototype.append = function(arr) {
+        var buff = concatenateArrayBuffers(this._buff.buffer, arr, true), length = buff.length, i;
+        this._length += arr.byteLength;
+        for (i = 64; i <= length; i += 64) {
+          md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));
+        }
+        this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);
+        return this;
+      };
+      SparkMD5.ArrayBuffer.prototype.end = function(raw) {
+        var buff = this._buff, length = buff.length, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], i, ret;
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= buff[i] << (i % 4 << 3);
+        }
+        this._finish(tail, length);
+        ret = hex(this._hash);
+        if (raw) {
+          ret = hexToBinaryString(ret);
+        }
+        this.reset();
+        return ret;
+      };
+      SparkMD5.ArrayBuffer.prototype.reset = function() {
+        this._buff = new Uint8Array(0);
+        this._length = 0;
+        this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+        return this;
+      };
+      SparkMD5.ArrayBuffer.prototype.getState = function() {
+        var state = SparkMD5.prototype.getState.call(this);
+        state.buff = arrayBuffer2Utf8Str(state.buff);
+        return state;
+      };
+      SparkMD5.ArrayBuffer.prototype.setState = function(state) {
+        state.buff = utf8Str2ArrayBuffer(state.buff, true);
+        return SparkMD5.prototype.setState.call(this, state);
+      };
+      SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
+      SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
+      SparkMD5.ArrayBuffer.hash = function(arr, raw) {
+        var hash = md51_array(new Uint8Array(arr)), ret = hex(hash);
+        return raw ? hexToBinaryString(ret) : ret;
+      };
+      return SparkMD5;
+    }));
+  })(sparkMd5);
+  var SparkMD5 = sparkMd5.exports;
+  const fileSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;
+  class FileChecksum {
+    static create(file, callback) {
+      const instance = new FileChecksum(file);
+      instance.create(callback);
+    }
+    constructor(file) {
+      this.file = file;
+      this.chunkSize = 2097152;
+      this.chunkCount = Math.ceil(this.file.size / this.chunkSize);
+      this.chunkIndex = 0;
+    }
+    create(callback) {
+      this.callback = callback;
+      this.md5Buffer = new SparkMD5.ArrayBuffer;
+      this.fileReader = new FileReader;
+      this.fileReader.addEventListener("load", (event => this.fileReaderDidLoad(event)));
+      this.fileReader.addEventListener("error", (event => this.fileReaderDidError(event)));
+      this.readNextChunk();
+    }
+    fileReaderDidLoad(event) {
+      this.md5Buffer.append(event.target.result);
+      if (!this.readNextChunk()) {
+        const binaryDigest = this.md5Buffer.end(true);
+        const base64digest = btoa(binaryDigest);
+        this.callback(null, base64digest);
+      }
+    }
+    fileReaderDidError(event) {
+      this.callback(`Error reading ${this.file.name}`);
+    }
+    readNextChunk() {
+      if (this.chunkIndex < this.chunkCount || this.chunkIndex == 0 && this.chunkCount == 0) {
+        const start = this.chunkIndex * this.chunkSize;
+        const end = Math.min(start + this.chunkSize, this.file.size);
+        const bytes = fileSlice.call(this.file, start, end);
+        this.fileReader.readAsArrayBuffer(bytes);
+        this.chunkIndex++;
+        return true;
+      } else {
+        return false;
+      }
+    }
+  }
+  function getMetaValue(name) {
+    const element = findElement(document.head, `meta[name="${name}"]`);
+    if (element) {
+      return element.getAttribute("content");
+    }
+  }
+  function findElements(root, selector) {
+    if (typeof root == "string") {
+      selector = root;
+      root = document;
+    }
+    const elements = root.querySelectorAll(selector);
+    return toArray(elements);
+  }
+  function findElement(root, selector) {
+    if (typeof root == "string") {
+      selector = root;
+      root = document;
+    }
+    return root.querySelector(selector);
+  }
+  function dispatchEvent(element, type, eventInit = {}) {
+    const {disabled: disabled} = element;
+    const {bubbles: bubbles, cancelable: cancelable, detail: detail} = eventInit;
+    const event = document.createEvent("Event");
+    event.initEvent(type, bubbles || true, cancelable || true);
+    event.detail = detail || {};
+    try {
+      element.disabled = false;
+      element.dispatchEvent(event);
+    } finally {
+      element.disabled = disabled;
+    }
+    return event;
+  }
+  function toArray(value) {
+    if (Array.isArray(value)) {
+      return value;
+    } else if (Array.from) {
+      return Array.from(value);
+    } else {
+      return [].slice.call(value);
+    }
+  }
+  class BlobRecord {
+    constructor(file, checksum, url, customHeaders = {}) {
+      this.file = file;
+      this.attributes = {
+        filename: file.name,
+        content_type: file.type || "application/octet-stream",
+        byte_size: file.size,
+        checksum: checksum
+      };
+      this.xhr = new XMLHttpRequest;
+      this.xhr.open("POST", url, true);
+      this.xhr.responseType = "json";
+      this.xhr.setRequestHeader("Content-Type", "application/json");
+      this.xhr.setRequestHeader("Accept", "application/json");
+      this.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+      Object.keys(customHeaders).forEach((headerKey => {
+        this.xhr.setRequestHeader(headerKey, customHeaders[headerKey]);
+      }));
+      const csrfToken = getMetaValue("csrf-token");
+      if (csrfToken != undefined) {
+        this.xhr.setRequestHeader("X-CSRF-Token", csrfToken);
+      }
+      this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+      this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+    }
+    get status() {
+      return this.xhr.status;
+    }
+    get response() {
+      const {responseType: responseType, response: response} = this.xhr;
+      if (responseType == "json") {
+        return response;
+      } else {
+        return JSON.parse(response);
+      }
+    }
+    create(callback) {
+      this.callback = callback;
+      this.xhr.send(JSON.stringify({
+        blob: this.attributes
+      }));
+    }
+    requestDidLoad(event) {
+      if (this.status >= 200 && this.status < 300) {
+        const {response: response} = this;
+        const {direct_upload: direct_upload} = response;
+        delete response.direct_upload;
+        this.attributes = response;
+        this.directUploadData = direct_upload;
+        this.callback(null, this.toJSON());
+      } else {
+        this.requestDidError(event);
+      }
+    }
+    requestDidError(event) {
+      this.callback(`Error creating Blob for "${this.file.name}". Status: ${this.status}`);
+    }
+    toJSON() {
+      const result = {};
+      for (const key in this.attributes) {
+        result[key] = this.attributes[key];
+      }
+      return result;
+    }
+  }
+  class BlobUpload {
+    constructor(blob) {
+      this.blob = blob;
+      this.file = blob.file;
+      const {url: url, headers: headers} = blob.directUploadData;
+      this.xhr = new XMLHttpRequest;
+      this.xhr.open("PUT", url, true);
+      this.xhr.responseType = "text";
+      for (const key in headers) {
+        this.xhr.setRequestHeader(key, headers[key]);
+      }
+      this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+      this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+    }
+    create(callback) {
+      this.callback = callback;
+      this.xhr.send(this.file.slice());
+    }
+    requestDidLoad(event) {
+      const {status: status, response: response} = this.xhr;
+      if (status >= 200 && status < 300) {
+        this.callback(null, response);
+      } else {
+        this.requestDidError(event);
+      }
+    }
+    requestDidError(event) {
+      this.callback(`Error storing "${this.file.name}". Status: ${this.xhr.status}`);
+    }
+  }
+  let id = 0;
+  class DirectUpload {
+    constructor(file, url, delegate, customHeaders = {}) {
+      this.id = ++id;
+      this.file = file;
+      this.url = url;
+      this.delegate = delegate;
+      this.customHeaders = customHeaders;
+    }
+    create(callback) {
+      FileChecksum.create(this.file, ((error, checksum) => {
+        if (error) {
+          callback(error);
+          return;
+        }
+        const blob = new BlobRecord(this.file, checksum, this.url, this.customHeaders);
+        notify(this.delegate, "directUploadWillCreateBlobWithXHR", blob.xhr);
+        blob.create((error => {
+          if (error) {
+            callback(error);
+          } else {
+            const upload = new BlobUpload(blob);
+            notify(this.delegate, "directUploadWillStoreFileWithXHR", upload.xhr);
+            upload.create((error => {
+              if (error) {
+                callback(error);
+              } else {
+                callback(null, blob.toJSON());
+              }
+            }));
+          }
+        }));
+      }));
+    }
+  }
+  function notify(object, methodName, ...messages) {
+    if (object && typeof object[methodName] == "function") {
+      return object[methodName](...messages);
+    }
+  }
+  class DirectUploadController {
+    constructor(input, file) {
+      this.input = input;
+      this.file = file;
+      this.directUpload = new DirectUpload(this.file, this.url, this);
+      this.dispatch("initialize");
+    }
+    start(callback) {
+      const hiddenInput = document.createElement("input");
+      hiddenInput.type = "hidden";
+      hiddenInput.name = this.input.name;
+      this.input.insertAdjacentElement("beforebegin", hiddenInput);
+      this.dispatch("start");
+      this.directUpload.create(((error, attributes) => {
+        if (error) {
+          hiddenInput.parentNode.removeChild(hiddenInput);
+          this.dispatchError(error);
+        } else {
+          hiddenInput.value = attributes.signed_id;
+        }
+        this.dispatch("end");
+        callback(error);
+      }));
+    }
+    uploadRequestDidProgress(event) {
+      const progress = event.loaded / event.total * 100;
+      if (progress) {
+        this.dispatch("progress", {
+          progress: progress
+        });
+      }
+    }
+    get url() {
+      return this.input.getAttribute("data-direct-upload-url");
+    }
+    dispatch(name, detail = {}) {
+      detail.file = this.file;
+      detail.id = this.directUpload.id;
+      return dispatchEvent(this.input, `direct-upload:${name}`, {
+        detail: detail
+      });
+    }
+    dispatchError(error) {
+      const event = this.dispatch("error", {
+        error: error
+      });
+      if (!event.defaultPrevented) {
+        alert(error);
+      }
+    }
+    directUploadWillCreateBlobWithXHR(xhr) {
+      this.dispatch("before-blob-request", {
+        xhr: xhr
+      });
+    }
+    directUploadWillStoreFileWithXHR(xhr) {
+      this.dispatch("before-storage-request", {
+        xhr: xhr
+      });
+      xhr.upload.addEventListener("progress", (event => this.uploadRequestDidProgress(event)));
+    }
+  }
+  const inputSelector = "input[type=file][data-direct-upload-url]:not([disabled])";
+  class DirectUploadsController {
+    constructor(form) {
+      this.form = form;
+      this.inputs = findElements(form, inputSelector).filter((input => input.files.length));
+    }
+    start(callback) {
+      const controllers = this.createDirectUploadControllers();
+      const startNextController = () => {
+        const controller = controllers.shift();
+        if (controller) {
+          controller.start((error => {
+            if (error) {
+              callback(error);
+              this.dispatch("end");
+            } else {
+              startNextController();
+            }
+          }));
+        } else {
+          callback();
+          this.dispatch("end");
+        }
+      };
+      this.dispatch("start");
+      startNextController();
+    }
+    createDirectUploadControllers() {
+      const controllers = [];
+      this.inputs.forEach((input => {
+        toArray(input.files).forEach((file => {
+          const controller = new DirectUploadController(input, file);
+          controllers.push(controller);
+        }));
+      }));
+      return controllers;
+    }
+    dispatch(name, detail = {}) {
+      return dispatchEvent(this.form, `direct-uploads:${name}`, {
+        detail: detail
+      });
+    }
+  }
+  const processingAttribute = "data-direct-uploads-processing";
+  const submitButtonsByForm = new WeakMap;
+  let started = false;
+  function start() {
+    if (!started) {
+      started = true;
+      document.addEventListener("click", didClick, true);
+      document.addEventListener("submit", didSubmitForm, true);
+      document.addEventListener("ajax:before", didSubmitRemoteElement);
+    }
+  }
+  function didClick(event) {
+    const button = event.target.closest("button, input");
+    if (button && button.type === "submit" && button.form) {
+      submitButtonsByForm.set(button.form, button);
+    }
+  }
+  function didSubmitForm(event) {
+    handleFormSubmissionEvent(event);
+  }
+  function didSubmitRemoteElement(event) {
+    if (event.target.tagName == "FORM") {
+      handleFormSubmissionEvent(event);
+    }
+  }
+  function handleFormSubmissionEvent(event) {
+    const form = event.target;
+    if (form.hasAttribute(processingAttribute)) {
+      event.preventDefault();
+      return;
+    }
+    const controller = new DirectUploadsController(form);
+    const {inputs: inputs} = controller;
+    if (inputs.length) {
+      event.preventDefault();
+      form.setAttribute(processingAttribute, "");
+      inputs.forEach(disable);
+      controller.start((error => {
+        form.removeAttribute(processingAttribute);
+        if (error) {
+          inputs.forEach(enable);
+        } else {
+          submitForm(form);
+        }
+      }));
+    }
+  }
+  function submitForm(form) {
+    let button = submitButtonsByForm.get(form) || findElement(form, "input[type=submit], button[type=submit]");
+    if (button) {
+      const {disabled: disabled} = button;
+      button.disabled = false;
+      button.focus();
+      button.click();
+      button.disabled = disabled;
+    } else {
+      button = document.createElement("input");
+      button.type = "submit";
+      button.style.display = "none";
+      form.appendChild(button);
+      button.click();
+      form.removeChild(button);
+    }
+    submitButtonsByForm.delete(form);
+  }
+  function disable(input) {
+    input.disabled = true;
+  }
+  function enable(input) {
+    input.disabled = false;
+  }
+  function autostart() {
+    if (window.ActiveStorage) {
+      start();
+    }
+  }
+  setTimeout(autostart, 1);
+  class AttachmentUpload {
+    constructor(attachment, element) {
+      this.attachment = attachment;
+      this.element = element;
+      this.directUpload = new DirectUpload(attachment.file, this.directUploadUrl, this);
+    }
+    start() {
+      this.directUpload.create(this.directUploadDidComplete.bind(this));
+      this.dispatch("start");
+    }
+    directUploadWillStoreFileWithXHR(xhr) {
+      xhr.upload.addEventListener("progress", (event => {
+        const progress = event.loaded / event.total * 100;
+        this.attachment.setUploadProgress(progress);
+        if (progress) {
+          this.dispatch("progress", {
+            progress: progress
+          });
+        }
+      }));
+    }
+    directUploadDidComplete(error, attributes) {
+      if (error) {
+        this.dispatchError(error);
+      } else {
+        this.attachment.setAttributes({
+          sgid: attributes.attachable_sgid,
+          url: this.createBlobUrl(attributes.signed_id, attributes.filename)
+        });
+        this.dispatch("end");
+      }
+    }
+    createBlobUrl(signedId, filename) {
+      return this.blobUrlTemplate.replace(":signed_id", signedId).replace(":filename", encodeURIComponent(filename));
+    }
+    dispatch(name, detail = {}) {
+      detail.attachment = this.attachment;
+      return dispatchEvent(this.element, `direct-upload:${name}`, {
+        detail: detail
+      });
+    }
+    dispatchError(error) {
+      const event = this.dispatch("error", {
+        error: error
+      });
+      if (!event.defaultPrevented) {
+        alert(error);
+      }
+    }
+    get directUploadUrl() {
+      return this.element.dataset.directUploadUrl;
+    }
+    get blobUrlTemplate() {
+      return this.element.dataset.blobUrlTemplate;
+    }
+  }
+  addEventListener("trix-attachment-add", (event => {
+    const {attachment: attachment, target: target} = event;
+    if (attachment.file) {
+      const upload = new AttachmentUpload(attachment, target);
+      upload.start();
+    }
+  }));
+}));
diff --git a/backend/public/assets/actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js.gz b/backend/public/assets/actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js.gz
new file mode 100644
index 0000000..393a007
Binary files /dev/null and b/backend/public/assets/actiontext-9ccbf682451d439611fe5a048e55157c56038840ebb4a8292437eb55fd31c83d.js.gz differ
diff --git a/backend/public/assets/actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js b/backend/public/assets/actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js
new file mode 100644
index 0000000..7902835
--- /dev/null
+++ b/backend/public/assets/actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js
@@ -0,0 +1,911 @@
+var sparkMd5 = {
+  exports: {}
+};
+
+(function(module, exports) {
+  (function(factory) {
+    {
+      module.exports = factory();
+    }
+  })((function(undefined$1) {
+    var hex_chr = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" ];
+    function md5cycle(x, k) {
+      var a = x[0], b = x[1], c = x[2], d = x[3];
+      a += (b & c | ~b & d) + k[0] - 680876936 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[1] - 389564586 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[2] + 606105819 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[3] - 1044525330 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & c | ~b & d) + k[4] - 176418897 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[5] + 1200080426 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[6] - 1473231341 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[7] - 45705983 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & c | ~b & d) + k[8] + 1770035416 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[9] - 1958414417 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[10] - 42063 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[11] - 1990404162 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & c | ~b & d) + k[12] + 1804603682 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[13] - 40341101 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[14] - 1502002290 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[15] + 1236535329 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & d | c & ~d) + k[1] - 165796510 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[6] - 1069501632 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[11] + 643717713 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[0] - 373897302 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b & d | c & ~d) + k[5] - 701558691 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[10] + 38016083 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[15] - 660478335 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[4] - 405537848 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b & d | c & ~d) + k[9] + 568446438 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[14] - 1019803690 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[3] - 187363961 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[8] + 1163531501 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b & d | c & ~d) + k[13] - 1444681467 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[2] - 51403784 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[7] + 1735328473 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[12] - 1926607734 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b ^ c ^ d) + k[5] - 378558 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[8] - 2022574463 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[11] + 1839030562 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[14] - 35309556 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (b ^ c ^ d) + k[1] - 1530992060 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[4] + 1272893353 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[7] - 155497632 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[10] - 1094730640 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (b ^ c ^ d) + k[13] + 681279174 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[0] - 358537222 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[3] - 722521979 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[6] + 76029189 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (b ^ c ^ d) + k[9] - 640364487 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[12] - 421815835 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[15] + 530742520 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[2] - 995338651 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      x[0] = a + x[0] | 0;
+      x[1] = b + x[1] | 0;
+      x[2] = c + x[2] | 0;
+      x[3] = d + x[3] | 0;
+    }
+    function md5blk(s) {
+      var md5blks = [], i;
+      for (i = 0; i < 64; i += 4) {
+        md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);
+      }
+      return md5blks;
+    }
+    function md5blk_array(a) {
+      var md5blks = [], i;
+      for (i = 0; i < 64; i += 4) {
+        md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
+      }
+      return md5blks;
+    }
+    function md51(s) {
+      var n = s.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+      for (i = 64; i <= n; i += 64) {
+        md5cycle(state, md5blk(s.substring(i - 64, i)));
+      }
+      s = s.substring(i - 64);
+      length = s.length;
+      tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
+      }
+      tail[i >> 2] |= 128 << (i % 4 << 3);
+      if (i > 55) {
+        md5cycle(state, tail);
+        for (i = 0; i < 16; i += 1) {
+          tail[i] = 0;
+        }
+      }
+      tmp = n * 8;
+      tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+      lo = parseInt(tmp[2], 16);
+      hi = parseInt(tmp[1], 16) || 0;
+      tail[14] = lo;
+      tail[15] = hi;
+      md5cycle(state, tail);
+      return state;
+    }
+    function md51_array(a) {
+      var n = a.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+      for (i = 64; i <= n; i += 64) {
+        md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
+      }
+      a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
+      length = a.length;
+      tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= a[i] << (i % 4 << 3);
+      }
+      tail[i >> 2] |= 128 << (i % 4 << 3);
+      if (i > 55) {
+        md5cycle(state, tail);
+        for (i = 0; i < 16; i += 1) {
+          tail[i] = 0;
+        }
+      }
+      tmp = n * 8;
+      tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+      lo = parseInt(tmp[2], 16);
+      hi = parseInt(tmp[1], 16) || 0;
+      tail[14] = lo;
+      tail[15] = hi;
+      md5cycle(state, tail);
+      return state;
+    }
+    function rhex(n) {
+      var s = "", j;
+      for (j = 0; j < 4; j += 1) {
+        s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15];
+      }
+      return s;
+    }
+    function hex(x) {
+      var i;
+      for (i = 0; i < x.length; i += 1) {
+        x[i] = rhex(x[i]);
+      }
+      return x.join("");
+    }
+    if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") ;
+    if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
+      (function() {
+        function clamp(val, length) {
+          val = val | 0 || 0;
+          if (val < 0) {
+            return Math.max(val + length, 0);
+          }
+          return Math.min(val, length);
+        }
+        ArrayBuffer.prototype.slice = function(from, to) {
+          var length = this.byteLength, begin = clamp(from, length), end = length, num, target, targetArray, sourceArray;
+          if (to !== undefined$1) {
+            end = clamp(to, length);
+          }
+          if (begin > end) {
+            return new ArrayBuffer(0);
+          }
+          num = end - begin;
+          target = new ArrayBuffer(num);
+          targetArray = new Uint8Array(target);
+          sourceArray = new Uint8Array(this, begin, num);
+          targetArray.set(sourceArray);
+          return target;
+        };
+      })();
+    }
+    function toUtf8(str) {
+      if (/[\u0080-\uFFFF]/.test(str)) {
+        str = unescape(encodeURIComponent(str));
+      }
+      return str;
+    }
+    function utf8Str2ArrayBuffer(str, returnUInt8Array) {
+      var length = str.length, buff = new ArrayBuffer(length), arr = new Uint8Array(buff), i;
+      for (i = 0; i < length; i += 1) {
+        arr[i] = str.charCodeAt(i);
+      }
+      return returnUInt8Array ? arr : buff;
+    }
+    function arrayBuffer2Utf8Str(buff) {
+      return String.fromCharCode.apply(null, new Uint8Array(buff));
+    }
+    function concatenateArrayBuffers(first, second, returnUInt8Array) {
+      var result = new Uint8Array(first.byteLength + second.byteLength);
+      result.set(new Uint8Array(first));
+      result.set(new Uint8Array(second), first.byteLength);
+      return returnUInt8Array ? result : result.buffer;
+    }
+    function hexToBinaryString(hex) {
+      var bytes = [], length = hex.length, x;
+      for (x = 0; x < length - 1; x += 2) {
+        bytes.push(parseInt(hex.substr(x, 2), 16));
+      }
+      return String.fromCharCode.apply(String, bytes);
+    }
+    function SparkMD5() {
+      this.reset();
+    }
+    SparkMD5.prototype.append = function(str) {
+      this.appendBinary(toUtf8(str));
+      return this;
+    };
+    SparkMD5.prototype.appendBinary = function(contents) {
+      this._buff += contents;
+      this._length += contents.length;
+      var length = this._buff.length, i;
+      for (i = 64; i <= length; i += 64) {
+        md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));
+      }
+      this._buff = this._buff.substring(i - 64);
+      return this;
+    };
+    SparkMD5.prototype.end = function(raw) {
+      var buff = this._buff, length = buff.length, i, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], ret;
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);
+      }
+      this._finish(tail, length);
+      ret = hex(this._hash);
+      if (raw) {
+        ret = hexToBinaryString(ret);
+      }
+      this.reset();
+      return ret;
+    };
+    SparkMD5.prototype.reset = function() {
+      this._buff = "";
+      this._length = 0;
+      this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+      return this;
+    };
+    SparkMD5.prototype.getState = function() {
+      return {
+        buff: this._buff,
+        length: this._length,
+        hash: this._hash.slice()
+      };
+    };
+    SparkMD5.prototype.setState = function(state) {
+      this._buff = state.buff;
+      this._length = state.length;
+      this._hash = state.hash;
+      return this;
+    };
+    SparkMD5.prototype.destroy = function() {
+      delete this._hash;
+      delete this._buff;
+      delete this._length;
+    };
+    SparkMD5.prototype._finish = function(tail, length) {
+      var i = length, tmp, lo, hi;
+      tail[i >> 2] |= 128 << (i % 4 << 3);
+      if (i > 55) {
+        md5cycle(this._hash, tail);
+        for (i = 0; i < 16; i += 1) {
+          tail[i] = 0;
+        }
+      }
+      tmp = this._length * 8;
+      tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+      lo = parseInt(tmp[2], 16);
+      hi = parseInt(tmp[1], 16) || 0;
+      tail[14] = lo;
+      tail[15] = hi;
+      md5cycle(this._hash, tail);
+    };
+    SparkMD5.hash = function(str, raw) {
+      return SparkMD5.hashBinary(toUtf8(str), raw);
+    };
+    SparkMD5.hashBinary = function(content, raw) {
+      var hash = md51(content), ret = hex(hash);
+      return raw ? hexToBinaryString(ret) : ret;
+    };
+    SparkMD5.ArrayBuffer = function() {
+      this.reset();
+    };
+    SparkMD5.ArrayBuffer.prototype.append = function(arr) {
+      var buff = concatenateArrayBuffers(this._buff.buffer, arr, true), length = buff.length, i;
+      this._length += arr.byteLength;
+      for (i = 64; i <= length; i += 64) {
+        md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));
+      }
+      this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);
+      return this;
+    };
+    SparkMD5.ArrayBuffer.prototype.end = function(raw) {
+      var buff = this._buff, length = buff.length, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], i, ret;
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= buff[i] << (i % 4 << 3);
+      }
+      this._finish(tail, length);
+      ret = hex(this._hash);
+      if (raw) {
+        ret = hexToBinaryString(ret);
+      }
+      this.reset();
+      return ret;
+    };
+    SparkMD5.ArrayBuffer.prototype.reset = function() {
+      this._buff = new Uint8Array(0);
+      this._length = 0;
+      this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+      return this;
+    };
+    SparkMD5.ArrayBuffer.prototype.getState = function() {
+      var state = SparkMD5.prototype.getState.call(this);
+      state.buff = arrayBuffer2Utf8Str(state.buff);
+      return state;
+    };
+    SparkMD5.ArrayBuffer.prototype.setState = function(state) {
+      state.buff = utf8Str2ArrayBuffer(state.buff, true);
+      return SparkMD5.prototype.setState.call(this, state);
+    };
+    SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
+    SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
+    SparkMD5.ArrayBuffer.hash = function(arr, raw) {
+      var hash = md51_array(new Uint8Array(arr)), ret = hex(hash);
+      return raw ? hexToBinaryString(ret) : ret;
+    };
+    return SparkMD5;
+  }));
+})(sparkMd5);
+
+var SparkMD5 = sparkMd5.exports;
+
+const fileSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;
+
+class FileChecksum {
+  static create(file, callback) {
+    const instance = new FileChecksum(file);
+    instance.create(callback);
+  }
+  constructor(file) {
+    this.file = file;
+    this.chunkSize = 2097152;
+    this.chunkCount = Math.ceil(this.file.size / this.chunkSize);
+    this.chunkIndex = 0;
+  }
+  create(callback) {
+    this.callback = callback;
+    this.md5Buffer = new SparkMD5.ArrayBuffer;
+    this.fileReader = new FileReader;
+    this.fileReader.addEventListener("load", (event => this.fileReaderDidLoad(event)));
+    this.fileReader.addEventListener("error", (event => this.fileReaderDidError(event)));
+    this.readNextChunk();
+  }
+  fileReaderDidLoad(event) {
+    this.md5Buffer.append(event.target.result);
+    if (!this.readNextChunk()) {
+      const binaryDigest = this.md5Buffer.end(true);
+      const base64digest = btoa(binaryDigest);
+      this.callback(null, base64digest);
+    }
+  }
+  fileReaderDidError(event) {
+    this.callback(`Error reading ${this.file.name}`);
+  }
+  readNextChunk() {
+    if (this.chunkIndex < this.chunkCount || this.chunkIndex == 0 && this.chunkCount == 0) {
+      const start = this.chunkIndex * this.chunkSize;
+      const end = Math.min(start + this.chunkSize, this.file.size);
+      const bytes = fileSlice.call(this.file, start, end);
+      this.fileReader.readAsArrayBuffer(bytes);
+      this.chunkIndex++;
+      return true;
+    } else {
+      return false;
+    }
+  }
+}
+
+function getMetaValue(name) {
+  const element = findElement(document.head, `meta[name="${name}"]`);
+  if (element) {
+    return element.getAttribute("content");
+  }
+}
+
+function findElements(root, selector) {
+  if (typeof root == "string") {
+    selector = root;
+    root = document;
+  }
+  const elements = root.querySelectorAll(selector);
+  return toArray(elements);
+}
+
+function findElement(root, selector) {
+  if (typeof root == "string") {
+    selector = root;
+    root = document;
+  }
+  return root.querySelector(selector);
+}
+
+function dispatchEvent(element, type, eventInit = {}) {
+  const {disabled: disabled} = element;
+  const {bubbles: bubbles, cancelable: cancelable, detail: detail} = eventInit;
+  const event = document.createEvent("Event");
+  event.initEvent(type, bubbles || true, cancelable || true);
+  event.detail = detail || {};
+  try {
+    element.disabled = false;
+    element.dispatchEvent(event);
+  } finally {
+    element.disabled = disabled;
+  }
+  return event;
+}
+
+function toArray(value) {
+  if (Array.isArray(value)) {
+    return value;
+  } else if (Array.from) {
+    return Array.from(value);
+  } else {
+    return [].slice.call(value);
+  }
+}
+
+class BlobRecord {
+  constructor(file, checksum, url, customHeaders = {}) {
+    this.file = file;
+    this.attributes = {
+      filename: file.name,
+      content_type: file.type || "application/octet-stream",
+      byte_size: file.size,
+      checksum: checksum
+    };
+    this.xhr = new XMLHttpRequest;
+    this.xhr.open("POST", url, true);
+    this.xhr.responseType = "json";
+    this.xhr.setRequestHeader("Content-Type", "application/json");
+    this.xhr.setRequestHeader("Accept", "application/json");
+    this.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+    Object.keys(customHeaders).forEach((headerKey => {
+      this.xhr.setRequestHeader(headerKey, customHeaders[headerKey]);
+    }));
+    const csrfToken = getMetaValue("csrf-token");
+    if (csrfToken != undefined) {
+      this.xhr.setRequestHeader("X-CSRF-Token", csrfToken);
+    }
+    this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+    this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+  }
+  get status() {
+    return this.xhr.status;
+  }
+  get response() {
+    const {responseType: responseType, response: response} = this.xhr;
+    if (responseType == "json") {
+      return response;
+    } else {
+      return JSON.parse(response);
+    }
+  }
+  create(callback) {
+    this.callback = callback;
+    this.xhr.send(JSON.stringify({
+      blob: this.attributes
+    }));
+  }
+  requestDidLoad(event) {
+    if (this.status >= 200 && this.status < 300) {
+      const {response: response} = this;
+      const {direct_upload: direct_upload} = response;
+      delete response.direct_upload;
+      this.attributes = response;
+      this.directUploadData = direct_upload;
+      this.callback(null, this.toJSON());
+    } else {
+      this.requestDidError(event);
+    }
+  }
+  requestDidError(event) {
+    this.callback(`Error creating Blob for "${this.file.name}". Status: ${this.status}`);
+  }
+  toJSON() {
+    const result = {};
+    for (const key in this.attributes) {
+      result[key] = this.attributes[key];
+    }
+    return result;
+  }
+}
+
+class BlobUpload {
+  constructor(blob) {
+    this.blob = blob;
+    this.file = blob.file;
+    const {url: url, headers: headers} = blob.directUploadData;
+    this.xhr = new XMLHttpRequest;
+    this.xhr.open("PUT", url, true);
+    this.xhr.responseType = "text";
+    for (const key in headers) {
+      this.xhr.setRequestHeader(key, headers[key]);
+    }
+    this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+    this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+  }
+  create(callback) {
+    this.callback = callback;
+    this.xhr.send(this.file.slice());
+  }
+  requestDidLoad(event) {
+    const {status: status, response: response} = this.xhr;
+    if (status >= 200 && status < 300) {
+      this.callback(null, response);
+    } else {
+      this.requestDidError(event);
+    }
+  }
+  requestDidError(event) {
+    this.callback(`Error storing "${this.file.name}". Status: ${this.xhr.status}`);
+  }
+}
+
+let id = 0;
+
+class DirectUpload {
+  constructor(file, url, delegate, customHeaders = {}) {
+    this.id = ++id;
+    this.file = file;
+    this.url = url;
+    this.delegate = delegate;
+    this.customHeaders = customHeaders;
+  }
+  create(callback) {
+    FileChecksum.create(this.file, ((error, checksum) => {
+      if (error) {
+        callback(error);
+        return;
+      }
+      const blob = new BlobRecord(this.file, checksum, this.url, this.customHeaders);
+      notify(this.delegate, "directUploadWillCreateBlobWithXHR", blob.xhr);
+      blob.create((error => {
+        if (error) {
+          callback(error);
+        } else {
+          const upload = new BlobUpload(blob);
+          notify(this.delegate, "directUploadWillStoreFileWithXHR", upload.xhr);
+          upload.create((error => {
+            if (error) {
+              callback(error);
+            } else {
+              callback(null, blob.toJSON());
+            }
+          }));
+        }
+      }));
+    }));
+  }
+}
+
+function notify(object, methodName, ...messages) {
+  if (object && typeof object[methodName] == "function") {
+    return object[methodName](...messages);
+  }
+}
+
+class DirectUploadController {
+  constructor(input, file) {
+    this.input = input;
+    this.file = file;
+    this.directUpload = new DirectUpload(this.file, this.url, this);
+    this.dispatch("initialize");
+  }
+  start(callback) {
+    const hiddenInput = document.createElement("input");
+    hiddenInput.type = "hidden";
+    hiddenInput.name = this.input.name;
+    this.input.insertAdjacentElement("beforebegin", hiddenInput);
+    this.dispatch("start");
+    this.directUpload.create(((error, attributes) => {
+      if (error) {
+        hiddenInput.parentNode.removeChild(hiddenInput);
+        this.dispatchError(error);
+      } else {
+        hiddenInput.value = attributes.signed_id;
+      }
+      this.dispatch("end");
+      callback(error);
+    }));
+  }
+  uploadRequestDidProgress(event) {
+    const progress = event.loaded / event.total * 100;
+    if (progress) {
+      this.dispatch("progress", {
+        progress: progress
+      });
+    }
+  }
+  get url() {
+    return this.input.getAttribute("data-direct-upload-url");
+  }
+  dispatch(name, detail = {}) {
+    detail.file = this.file;
+    detail.id = this.directUpload.id;
+    return dispatchEvent(this.input, `direct-upload:${name}`, {
+      detail: detail
+    });
+  }
+  dispatchError(error) {
+    const event = this.dispatch("error", {
+      error: error
+    });
+    if (!event.defaultPrevented) {
+      alert(error);
+    }
+  }
+  directUploadWillCreateBlobWithXHR(xhr) {
+    this.dispatch("before-blob-request", {
+      xhr: xhr
+    });
+  }
+  directUploadWillStoreFileWithXHR(xhr) {
+    this.dispatch("before-storage-request", {
+      xhr: xhr
+    });
+    xhr.upload.addEventListener("progress", (event => this.uploadRequestDidProgress(event)));
+  }
+}
+
+const inputSelector = "input[type=file][data-direct-upload-url]:not([disabled])";
+
+class DirectUploadsController {
+  constructor(form) {
+    this.form = form;
+    this.inputs = findElements(form, inputSelector).filter((input => input.files.length));
+  }
+  start(callback) {
+    const controllers = this.createDirectUploadControllers();
+    const startNextController = () => {
+      const controller = controllers.shift();
+      if (controller) {
+        controller.start((error => {
+          if (error) {
+            callback(error);
+            this.dispatch("end");
+          } else {
+            startNextController();
+          }
+        }));
+      } else {
+        callback();
+        this.dispatch("end");
+      }
+    };
+    this.dispatch("start");
+    startNextController();
+  }
+  createDirectUploadControllers() {
+    const controllers = [];
+    this.inputs.forEach((input => {
+      toArray(input.files).forEach((file => {
+        const controller = new DirectUploadController(input, file);
+        controllers.push(controller);
+      }));
+    }));
+    return controllers;
+  }
+  dispatch(name, detail = {}) {
+    return dispatchEvent(this.form, `direct-uploads:${name}`, {
+      detail: detail
+    });
+  }
+}
+
+const processingAttribute = "data-direct-uploads-processing";
+
+const submitButtonsByForm = new WeakMap;
+
+let started = false;
+
+function start() {
+  if (!started) {
+    started = true;
+    document.addEventListener("click", didClick, true);
+    document.addEventListener("submit", didSubmitForm, true);
+    document.addEventListener("ajax:before", didSubmitRemoteElement);
+  }
+}
+
+function didClick(event) {
+  const button = event.target.closest("button, input");
+  if (button && button.type === "submit" && button.form) {
+    submitButtonsByForm.set(button.form, button);
+  }
+}
+
+function didSubmitForm(event) {
+  handleFormSubmissionEvent(event);
+}
+
+function didSubmitRemoteElement(event) {
+  if (event.target.tagName == "FORM") {
+    handleFormSubmissionEvent(event);
+  }
+}
+
+function handleFormSubmissionEvent(event) {
+  const form = event.target;
+  if (form.hasAttribute(processingAttribute)) {
+    event.preventDefault();
+    return;
+  }
+  const controller = new DirectUploadsController(form);
+  const {inputs: inputs} = controller;
+  if (inputs.length) {
+    event.preventDefault();
+    form.setAttribute(processingAttribute, "");
+    inputs.forEach(disable);
+    controller.start((error => {
+      form.removeAttribute(processingAttribute);
+      if (error) {
+        inputs.forEach(enable);
+      } else {
+        submitForm(form);
+      }
+    }));
+  }
+}
+
+function submitForm(form) {
+  let button = submitButtonsByForm.get(form) || findElement(form, "input[type=submit], button[type=submit]");
+  if (button) {
+    const {disabled: disabled} = button;
+    button.disabled = false;
+    button.focus();
+    button.click();
+    button.disabled = disabled;
+  } else {
+    button = document.createElement("input");
+    button.type = "submit";
+    button.style.display = "none";
+    form.appendChild(button);
+    button.click();
+    form.removeChild(button);
+  }
+  submitButtonsByForm.delete(form);
+}
+
+function disable(input) {
+  input.disabled = true;
+}
+
+function enable(input) {
+  input.disabled = false;
+}
+
+function autostart() {
+  if (window.ActiveStorage) {
+    start();
+  }
+}
+
+setTimeout(autostart, 1);
+
+class AttachmentUpload {
+  constructor(attachment, element) {
+    this.attachment = attachment;
+    this.element = element;
+    this.directUpload = new DirectUpload(attachment.file, this.directUploadUrl, this);
+  }
+  start() {
+    this.directUpload.create(this.directUploadDidComplete.bind(this));
+    this.dispatch("start");
+  }
+  directUploadWillStoreFileWithXHR(xhr) {
+    xhr.upload.addEventListener("progress", (event => {
+      const progress = event.loaded / event.total * 100;
+      this.attachment.setUploadProgress(progress);
+      if (progress) {
+        this.dispatch("progress", {
+          progress: progress
+        });
+      }
+    }));
+  }
+  directUploadDidComplete(error, attributes) {
+    if (error) {
+      this.dispatchError(error);
+    } else {
+      this.attachment.setAttributes({
+        sgid: attributes.attachable_sgid,
+        url: this.createBlobUrl(attributes.signed_id, attributes.filename)
+      });
+      this.dispatch("end");
+    }
+  }
+  createBlobUrl(signedId, filename) {
+    return this.blobUrlTemplate.replace(":signed_id", signedId).replace(":filename", encodeURIComponent(filename));
+  }
+  dispatch(name, detail = {}) {
+    detail.attachment = this.attachment;
+    return dispatchEvent(this.element, `direct-upload:${name}`, {
+      detail: detail
+    });
+  }
+  dispatchError(error) {
+    const event = this.dispatch("error", {
+      error: error
+    });
+    if (!event.defaultPrevented) {
+      alert(error);
+    }
+  }
+  get directUploadUrl() {
+    return this.element.dataset.directUploadUrl;
+  }
+  get blobUrlTemplate() {
+    return this.element.dataset.blobUrlTemplate;
+  }
+}
+
+addEventListener("trix-attachment-add", (event => {
+  const {attachment: attachment, target: target} = event;
+  if (attachment.file) {
+    const upload = new AttachmentUpload(attachment, target);
+    upload.start();
+  }
+}));
diff --git a/backend/public/assets/actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js.gz b/backend/public/assets/actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js.gz
new file mode 100644
index 0000000..8339b17
Binary files /dev/null and b/backend/public/assets/actiontext.esm-6790d4daf5458cd6eb8de2d56e754a340caeba909cb2952a35fb478955493d8c.js.gz differ
diff --git a/backend/public/assets/activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js b/backend/public/assets/activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js
new file mode 100644
index 0000000..754c727
--- /dev/null
+++ b/backend/public/assets/activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js
@@ -0,0 +1,830 @@
+(function(global, factory) {
+  typeof exports === "object" && typeof module !== "undefined" ? factory(exports) : typeof define === "function" && define.amd ? define([ "exports" ], factory) : (global = typeof globalThis !== "undefined" ? globalThis : global || self, 
+  factory(global.ActiveStorage = {}));
+})(this, (function(exports) {
+  "use strict";
+  var sparkMd5 = {
+    exports: {}
+  };
+  (function(module, exports) {
+    (function(factory) {
+      {
+        module.exports = factory();
+      }
+    })((function(undefined$1) {
+      var hex_chr = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" ];
+      function md5cycle(x, k) {
+        var a = x[0], b = x[1], c = x[2], d = x[3];
+        a += (b & c | ~b & d) + k[0] - 680876936 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[1] - 389564586 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[2] + 606105819 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[3] - 1044525330 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & c | ~b & d) + k[4] - 176418897 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[5] + 1200080426 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[6] - 1473231341 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[7] - 45705983 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & c | ~b & d) + k[8] + 1770035416 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[9] - 1958414417 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[10] - 42063 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[11] - 1990404162 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & c | ~b & d) + k[12] + 1804603682 | 0;
+        a = (a << 7 | a >>> 25) + b | 0;
+        d += (a & b | ~a & c) + k[13] - 40341101 | 0;
+        d = (d << 12 | d >>> 20) + a | 0;
+        c += (d & a | ~d & b) + k[14] - 1502002290 | 0;
+        c = (c << 17 | c >>> 15) + d | 0;
+        b += (c & d | ~c & a) + k[15] + 1236535329 | 0;
+        b = (b << 22 | b >>> 10) + c | 0;
+        a += (b & d | c & ~d) + k[1] - 165796510 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[6] - 1069501632 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[11] + 643717713 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[0] - 373897302 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b & d | c & ~d) + k[5] - 701558691 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[10] + 38016083 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[15] - 660478335 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[4] - 405537848 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b & d | c & ~d) + k[9] + 568446438 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[14] - 1019803690 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[3] - 187363961 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[8] + 1163531501 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b & d | c & ~d) + k[13] - 1444681467 | 0;
+        a = (a << 5 | a >>> 27) + b | 0;
+        d += (a & c | b & ~c) + k[2] - 51403784 | 0;
+        d = (d << 9 | d >>> 23) + a | 0;
+        c += (d & b | a & ~b) + k[7] + 1735328473 | 0;
+        c = (c << 14 | c >>> 18) + d | 0;
+        b += (c & a | d & ~a) + k[12] - 1926607734 | 0;
+        b = (b << 20 | b >>> 12) + c | 0;
+        a += (b ^ c ^ d) + k[5] - 378558 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[8] - 2022574463 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[11] + 1839030562 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[14] - 35309556 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (b ^ c ^ d) + k[1] - 1530992060 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[4] + 1272893353 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[7] - 155497632 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[10] - 1094730640 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (b ^ c ^ d) + k[13] + 681279174 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[0] - 358537222 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[3] - 722521979 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[6] + 76029189 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (b ^ c ^ d) + k[9] - 640364487 | 0;
+        a = (a << 4 | a >>> 28) + b | 0;
+        d += (a ^ b ^ c) + k[12] - 421815835 | 0;
+        d = (d << 11 | d >>> 21) + a | 0;
+        c += (d ^ a ^ b) + k[15] + 530742520 | 0;
+        c = (c << 16 | c >>> 16) + d | 0;
+        b += (c ^ d ^ a) + k[2] - 995338651 | 0;
+        b = (b << 23 | b >>> 9) + c | 0;
+        a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;
+        a = (a << 6 | a >>> 26) + b | 0;
+        d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;
+        d = (d << 10 | d >>> 22) + a | 0;
+        c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;
+        c = (c << 15 | c >>> 17) + d | 0;
+        b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;
+        b = (b << 21 | b >>> 11) + c | 0;
+        x[0] = a + x[0] | 0;
+        x[1] = b + x[1] | 0;
+        x[2] = c + x[2] | 0;
+        x[3] = d + x[3] | 0;
+      }
+      function md5blk(s) {
+        var md5blks = [], i;
+        for (i = 0; i < 64; i += 4) {
+          md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);
+        }
+        return md5blks;
+      }
+      function md5blk_array(a) {
+        var md5blks = [], i;
+        for (i = 0; i < 64; i += 4) {
+          md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
+        }
+        return md5blks;
+      }
+      function md51(s) {
+        var n = s.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+        for (i = 64; i <= n; i += 64) {
+          md5cycle(state, md5blk(s.substring(i - 64, i)));
+        }
+        s = s.substring(i - 64);
+        length = s.length;
+        tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
+        }
+        tail[i >> 2] |= 128 << (i % 4 << 3);
+        if (i > 55) {
+          md5cycle(state, tail);
+          for (i = 0; i < 16; i += 1) {
+            tail[i] = 0;
+          }
+        }
+        tmp = n * 8;
+        tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+        lo = parseInt(tmp[2], 16);
+        hi = parseInt(tmp[1], 16) || 0;
+        tail[14] = lo;
+        tail[15] = hi;
+        md5cycle(state, tail);
+        return state;
+      }
+      function md51_array(a) {
+        var n = a.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+        for (i = 64; i <= n; i += 64) {
+          md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
+        }
+        a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
+        length = a.length;
+        tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= a[i] << (i % 4 << 3);
+        }
+        tail[i >> 2] |= 128 << (i % 4 << 3);
+        if (i > 55) {
+          md5cycle(state, tail);
+          for (i = 0; i < 16; i += 1) {
+            tail[i] = 0;
+          }
+        }
+        tmp = n * 8;
+        tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+        lo = parseInt(tmp[2], 16);
+        hi = parseInt(tmp[1], 16) || 0;
+        tail[14] = lo;
+        tail[15] = hi;
+        md5cycle(state, tail);
+        return state;
+      }
+      function rhex(n) {
+        var s = "", j;
+        for (j = 0; j < 4; j += 1) {
+          s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15];
+        }
+        return s;
+      }
+      function hex(x) {
+        var i;
+        for (i = 0; i < x.length; i += 1) {
+          x[i] = rhex(x[i]);
+        }
+        return x.join("");
+      }
+      if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") ;
+      if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
+        (function() {
+          function clamp(val, length) {
+            val = val | 0 || 0;
+            if (val < 0) {
+              return Math.max(val + length, 0);
+            }
+            return Math.min(val, length);
+          }
+          ArrayBuffer.prototype.slice = function(from, to) {
+            var length = this.byteLength, begin = clamp(from, length), end = length, num, target, targetArray, sourceArray;
+            if (to !== undefined$1) {
+              end = clamp(to, length);
+            }
+            if (begin > end) {
+              return new ArrayBuffer(0);
+            }
+            num = end - begin;
+            target = new ArrayBuffer(num);
+            targetArray = new Uint8Array(target);
+            sourceArray = new Uint8Array(this, begin, num);
+            targetArray.set(sourceArray);
+            return target;
+          };
+        })();
+      }
+      function toUtf8(str) {
+        if (/[\u0080-\uFFFF]/.test(str)) {
+          str = unescape(encodeURIComponent(str));
+        }
+        return str;
+      }
+      function utf8Str2ArrayBuffer(str, returnUInt8Array) {
+        var length = str.length, buff = new ArrayBuffer(length), arr = new Uint8Array(buff), i;
+        for (i = 0; i < length; i += 1) {
+          arr[i] = str.charCodeAt(i);
+        }
+        return returnUInt8Array ? arr : buff;
+      }
+      function arrayBuffer2Utf8Str(buff) {
+        return String.fromCharCode.apply(null, new Uint8Array(buff));
+      }
+      function concatenateArrayBuffers(first, second, returnUInt8Array) {
+        var result = new Uint8Array(first.byteLength + second.byteLength);
+        result.set(new Uint8Array(first));
+        result.set(new Uint8Array(second), first.byteLength);
+        return returnUInt8Array ? result : result.buffer;
+      }
+      function hexToBinaryString(hex) {
+        var bytes = [], length = hex.length, x;
+        for (x = 0; x < length - 1; x += 2) {
+          bytes.push(parseInt(hex.substr(x, 2), 16));
+        }
+        return String.fromCharCode.apply(String, bytes);
+      }
+      function SparkMD5() {
+        this.reset();
+      }
+      SparkMD5.prototype.append = function(str) {
+        this.appendBinary(toUtf8(str));
+        return this;
+      };
+      SparkMD5.prototype.appendBinary = function(contents) {
+        this._buff += contents;
+        this._length += contents.length;
+        var length = this._buff.length, i;
+        for (i = 64; i <= length; i += 64) {
+          md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));
+        }
+        this._buff = this._buff.substring(i - 64);
+        return this;
+      };
+      SparkMD5.prototype.end = function(raw) {
+        var buff = this._buff, length = buff.length, i, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], ret;
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);
+        }
+        this._finish(tail, length);
+        ret = hex(this._hash);
+        if (raw) {
+          ret = hexToBinaryString(ret);
+        }
+        this.reset();
+        return ret;
+      };
+      SparkMD5.prototype.reset = function() {
+        this._buff = "";
+        this._length = 0;
+        this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+        return this;
+      };
+      SparkMD5.prototype.getState = function() {
+        return {
+          buff: this._buff,
+          length: this._length,
+          hash: this._hash.slice()
+        };
+      };
+      SparkMD5.prototype.setState = function(state) {
+        this._buff = state.buff;
+        this._length = state.length;
+        this._hash = state.hash;
+        return this;
+      };
+      SparkMD5.prototype.destroy = function() {
+        delete this._hash;
+        delete this._buff;
+        delete this._length;
+      };
+      SparkMD5.prototype._finish = function(tail, length) {
+        var i = length, tmp, lo, hi;
+        tail[i >> 2] |= 128 << (i % 4 << 3);
+        if (i > 55) {
+          md5cycle(this._hash, tail);
+          for (i = 0; i < 16; i += 1) {
+            tail[i] = 0;
+          }
+        }
+        tmp = this._length * 8;
+        tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+        lo = parseInt(tmp[2], 16);
+        hi = parseInt(tmp[1], 16) || 0;
+        tail[14] = lo;
+        tail[15] = hi;
+        md5cycle(this._hash, tail);
+      };
+      SparkMD5.hash = function(str, raw) {
+        return SparkMD5.hashBinary(toUtf8(str), raw);
+      };
+      SparkMD5.hashBinary = function(content, raw) {
+        var hash = md51(content), ret = hex(hash);
+        return raw ? hexToBinaryString(ret) : ret;
+      };
+      SparkMD5.ArrayBuffer = function() {
+        this.reset();
+      };
+      SparkMD5.ArrayBuffer.prototype.append = function(arr) {
+        var buff = concatenateArrayBuffers(this._buff.buffer, arr, true), length = buff.length, i;
+        this._length += arr.byteLength;
+        for (i = 64; i <= length; i += 64) {
+          md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));
+        }
+        this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);
+        return this;
+      };
+      SparkMD5.ArrayBuffer.prototype.end = function(raw) {
+        var buff = this._buff, length = buff.length, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], i, ret;
+        for (i = 0; i < length; i += 1) {
+          tail[i >> 2] |= buff[i] << (i % 4 << 3);
+        }
+        this._finish(tail, length);
+        ret = hex(this._hash);
+        if (raw) {
+          ret = hexToBinaryString(ret);
+        }
+        this.reset();
+        return ret;
+      };
+      SparkMD5.ArrayBuffer.prototype.reset = function() {
+        this._buff = new Uint8Array(0);
+        this._length = 0;
+        this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+        return this;
+      };
+      SparkMD5.ArrayBuffer.prototype.getState = function() {
+        var state = SparkMD5.prototype.getState.call(this);
+        state.buff = arrayBuffer2Utf8Str(state.buff);
+        return state;
+      };
+      SparkMD5.ArrayBuffer.prototype.setState = function(state) {
+        state.buff = utf8Str2ArrayBuffer(state.buff, true);
+        return SparkMD5.prototype.setState.call(this, state);
+      };
+      SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
+      SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
+      SparkMD5.ArrayBuffer.hash = function(arr, raw) {
+        var hash = md51_array(new Uint8Array(arr)), ret = hex(hash);
+        return raw ? hexToBinaryString(ret) : ret;
+      };
+      return SparkMD5;
+    }));
+  })(sparkMd5);
+  var SparkMD5 = sparkMd5.exports;
+  const fileSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;
+  class FileChecksum {
+    static create(file, callback) {
+      const instance = new FileChecksum(file);
+      instance.create(callback);
+    }
+    constructor(file) {
+      this.file = file;
+      this.chunkSize = 2097152;
+      this.chunkCount = Math.ceil(this.file.size / this.chunkSize);
+      this.chunkIndex = 0;
+    }
+    create(callback) {
+      this.callback = callback;
+      this.md5Buffer = new SparkMD5.ArrayBuffer;
+      this.fileReader = new FileReader;
+      this.fileReader.addEventListener("load", (event => this.fileReaderDidLoad(event)));
+      this.fileReader.addEventListener("error", (event => this.fileReaderDidError(event)));
+      this.readNextChunk();
+    }
+    fileReaderDidLoad(event) {
+      this.md5Buffer.append(event.target.result);
+      if (!this.readNextChunk()) {
+        const binaryDigest = this.md5Buffer.end(true);
+        const base64digest = btoa(binaryDigest);
+        this.callback(null, base64digest);
+      }
+    }
+    fileReaderDidError(event) {
+      this.callback(`Error reading ${this.file.name}`);
+    }
+    readNextChunk() {
+      if (this.chunkIndex < this.chunkCount || this.chunkIndex == 0 && this.chunkCount == 0) {
+        const start = this.chunkIndex * this.chunkSize;
+        const end = Math.min(start + this.chunkSize, this.file.size);
+        const bytes = fileSlice.call(this.file, start, end);
+        this.fileReader.readAsArrayBuffer(bytes);
+        this.chunkIndex++;
+        return true;
+      } else {
+        return false;
+      }
+    }
+  }
+  function getMetaValue(name) {
+    const element = findElement(document.head, `meta[name="${name}"]`);
+    if (element) {
+      return element.getAttribute("content");
+    }
+  }
+  function findElements(root, selector) {
+    if (typeof root == "string") {
+      selector = root;
+      root = document;
+    }
+    const elements = root.querySelectorAll(selector);
+    return toArray(elements);
+  }
+  function findElement(root, selector) {
+    if (typeof root == "string") {
+      selector = root;
+      root = document;
+    }
+    return root.querySelector(selector);
+  }
+  function dispatchEvent(element, type, eventInit = {}) {
+    const {disabled: disabled} = element;
+    const {bubbles: bubbles, cancelable: cancelable, detail: detail} = eventInit;
+    const event = document.createEvent("Event");
+    event.initEvent(type, bubbles || true, cancelable || true);
+    event.detail = detail || {};
+    try {
+      element.disabled = false;
+      element.dispatchEvent(event);
+    } finally {
+      element.disabled = disabled;
+    }
+    return event;
+  }
+  function toArray(value) {
+    if (Array.isArray(value)) {
+      return value;
+    } else if (Array.from) {
+      return Array.from(value);
+    } else {
+      return [].slice.call(value);
+    }
+  }
+  class BlobRecord {
+    constructor(file, checksum, url, customHeaders = {}) {
+      this.file = file;
+      this.attributes = {
+        filename: file.name,
+        content_type: file.type || "application/octet-stream",
+        byte_size: file.size,
+        checksum: checksum
+      };
+      this.xhr = new XMLHttpRequest;
+      this.xhr.open("POST", url, true);
+      this.xhr.responseType = "json";
+      this.xhr.setRequestHeader("Content-Type", "application/json");
+      this.xhr.setRequestHeader("Accept", "application/json");
+      this.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+      Object.keys(customHeaders).forEach((headerKey => {
+        this.xhr.setRequestHeader(headerKey, customHeaders[headerKey]);
+      }));
+      const csrfToken = getMetaValue("csrf-token");
+      if (csrfToken != undefined) {
+        this.xhr.setRequestHeader("X-CSRF-Token", csrfToken);
+      }
+      this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+      this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+    }
+    get status() {
+      return this.xhr.status;
+    }
+    get response() {
+      const {responseType: responseType, response: response} = this.xhr;
+      if (responseType == "json") {
+        return response;
+      } else {
+        return JSON.parse(response);
+      }
+    }
+    create(callback) {
+      this.callback = callback;
+      this.xhr.send(JSON.stringify({
+        blob: this.attributes
+      }));
+    }
+    requestDidLoad(event) {
+      if (this.status >= 200 && this.status < 300) {
+        const {response: response} = this;
+        const {direct_upload: direct_upload} = response;
+        delete response.direct_upload;
+        this.attributes = response;
+        this.directUploadData = direct_upload;
+        this.callback(null, this.toJSON());
+      } else {
+        this.requestDidError(event);
+      }
+    }
+    requestDidError(event) {
+      this.callback(`Error creating Blob for "${this.file.name}". Status: ${this.status}`);
+    }
+    toJSON() {
+      const result = {};
+      for (const key in this.attributes) {
+        result[key] = this.attributes[key];
+      }
+      return result;
+    }
+  }
+  class BlobUpload {
+    constructor(blob) {
+      this.blob = blob;
+      this.file = blob.file;
+      const {url: url, headers: headers} = blob.directUploadData;
+      this.xhr = new XMLHttpRequest;
+      this.xhr.open("PUT", url, true);
+      this.xhr.responseType = "text";
+      for (const key in headers) {
+        this.xhr.setRequestHeader(key, headers[key]);
+      }
+      this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+      this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+    }
+    create(callback) {
+      this.callback = callback;
+      this.xhr.send(this.file.slice());
+    }
+    requestDidLoad(event) {
+      const {status: status, response: response} = this.xhr;
+      if (status >= 200 && status < 300) {
+        this.callback(null, response);
+      } else {
+        this.requestDidError(event);
+      }
+    }
+    requestDidError(event) {
+      this.callback(`Error storing "${this.file.name}". Status: ${this.xhr.status}`);
+    }
+  }
+  let id = 0;
+  class DirectUpload {
+    constructor(file, url, delegate, customHeaders = {}) {
+      this.id = ++id;
+      this.file = file;
+      this.url = url;
+      this.delegate = delegate;
+      this.customHeaders = customHeaders;
+    }
+    create(callback) {
+      FileChecksum.create(this.file, ((error, checksum) => {
+        if (error) {
+          callback(error);
+          return;
+        }
+        const blob = new BlobRecord(this.file, checksum, this.url, this.customHeaders);
+        notify(this.delegate, "directUploadWillCreateBlobWithXHR", blob.xhr);
+        blob.create((error => {
+          if (error) {
+            callback(error);
+          } else {
+            const upload = new BlobUpload(blob);
+            notify(this.delegate, "directUploadWillStoreFileWithXHR", upload.xhr);
+            upload.create((error => {
+              if (error) {
+                callback(error);
+              } else {
+                callback(null, blob.toJSON());
+              }
+            }));
+          }
+        }));
+      }));
+    }
+  }
+  function notify(object, methodName, ...messages) {
+    if (object && typeof object[methodName] == "function") {
+      return object[methodName](...messages);
+    }
+  }
+  class DirectUploadController {
+    constructor(input, file) {
+      this.input = input;
+      this.file = file;
+      this.directUpload = new DirectUpload(this.file, this.url, this);
+      this.dispatch("initialize");
+    }
+    start(callback) {
+      const hiddenInput = document.createElement("input");
+      hiddenInput.type = "hidden";
+      hiddenInput.name = this.input.name;
+      this.input.insertAdjacentElement("beforebegin", hiddenInput);
+      this.dispatch("start");
+      this.directUpload.create(((error, attributes) => {
+        if (error) {
+          hiddenInput.parentNode.removeChild(hiddenInput);
+          this.dispatchError(error);
+        } else {
+          hiddenInput.value = attributes.signed_id;
+        }
+        this.dispatch("end");
+        callback(error);
+      }));
+    }
+    uploadRequestDidProgress(event) {
+      const progress = event.loaded / event.total * 100;
+      if (progress) {
+        this.dispatch("progress", {
+          progress: progress
+        });
+      }
+    }
+    get url() {
+      return this.input.getAttribute("data-direct-upload-url");
+    }
+    dispatch(name, detail = {}) {
+      detail.file = this.file;
+      detail.id = this.directUpload.id;
+      return dispatchEvent(this.input, `direct-upload:${name}`, {
+        detail: detail
+      });
+    }
+    dispatchError(error) {
+      const event = this.dispatch("error", {
+        error: error
+      });
+      if (!event.defaultPrevented) {
+        alert(error);
+      }
+    }
+    directUploadWillCreateBlobWithXHR(xhr) {
+      this.dispatch("before-blob-request", {
+        xhr: xhr
+      });
+    }
+    directUploadWillStoreFileWithXHR(xhr) {
+      this.dispatch("before-storage-request", {
+        xhr: xhr
+      });
+      xhr.upload.addEventListener("progress", (event => this.uploadRequestDidProgress(event)));
+    }
+  }
+  const inputSelector = "input[type=file][data-direct-upload-url]:not([disabled])";
+  class DirectUploadsController {
+    constructor(form) {
+      this.form = form;
+      this.inputs = findElements(form, inputSelector).filter((input => input.files.length));
+    }
+    start(callback) {
+      const controllers = this.createDirectUploadControllers();
+      const startNextController = () => {
+        const controller = controllers.shift();
+        if (controller) {
+          controller.start((error => {
+            if (error) {
+              callback(error);
+              this.dispatch("end");
+            } else {
+              startNextController();
+            }
+          }));
+        } else {
+          callback();
+          this.dispatch("end");
+        }
+      };
+      this.dispatch("start");
+      startNextController();
+    }
+    createDirectUploadControllers() {
+      const controllers = [];
+      this.inputs.forEach((input => {
+        toArray(input.files).forEach((file => {
+          const controller = new DirectUploadController(input, file);
+          controllers.push(controller);
+        }));
+      }));
+      return controllers;
+    }
+    dispatch(name, detail = {}) {
+      return dispatchEvent(this.form, `direct-uploads:${name}`, {
+        detail: detail
+      });
+    }
+  }
+  const processingAttribute = "data-direct-uploads-processing";
+  const submitButtonsByForm = new WeakMap;
+  let started = false;
+  function start() {
+    if (!started) {
+      started = true;
+      document.addEventListener("click", didClick, true);
+      document.addEventListener("submit", didSubmitForm, true);
+      document.addEventListener("ajax:before", didSubmitRemoteElement);
+    }
+  }
+  function didClick(event) {
+    const button = event.target.closest("button, input");
+    if (button && button.type === "submit" && button.form) {
+      submitButtonsByForm.set(button.form, button);
+    }
+  }
+  function didSubmitForm(event) {
+    handleFormSubmissionEvent(event);
+  }
+  function didSubmitRemoteElement(event) {
+    if (event.target.tagName == "FORM") {
+      handleFormSubmissionEvent(event);
+    }
+  }
+  function handleFormSubmissionEvent(event) {
+    const form = event.target;
+    if (form.hasAttribute(processingAttribute)) {
+      event.preventDefault();
+      return;
+    }
+    const controller = new DirectUploadsController(form);
+    const {inputs: inputs} = controller;
+    if (inputs.length) {
+      event.preventDefault();
+      form.setAttribute(processingAttribute, "");
+      inputs.forEach(disable);
+      controller.start((error => {
+        form.removeAttribute(processingAttribute);
+        if (error) {
+          inputs.forEach(enable);
+        } else {
+          submitForm(form);
+        }
+      }));
+    }
+  }
+  function submitForm(form) {
+    let button = submitButtonsByForm.get(form) || findElement(form, "input[type=submit], button[type=submit]");
+    if (button) {
+      const {disabled: disabled} = button;
+      button.disabled = false;
+      button.focus();
+      button.click();
+      button.disabled = disabled;
+    } else {
+      button = document.createElement("input");
+      button.type = "submit";
+      button.style.display = "none";
+      form.appendChild(button);
+      button.click();
+      form.removeChild(button);
+    }
+    submitButtonsByForm.delete(form);
+  }
+  function disable(input) {
+    input.disabled = true;
+  }
+  function enable(input) {
+    input.disabled = false;
+  }
+  function autostart() {
+    if (window.ActiveStorage) {
+      start();
+    }
+  }
+  setTimeout(autostart, 1);
+  exports.DirectUpload = DirectUpload;
+  exports.DirectUploadController = DirectUploadController;
+  exports.DirectUploadsController = DirectUploadsController;
+  exports.dispatchEvent = dispatchEvent;
+  exports.start = start;
+  Object.defineProperty(exports, "__esModule", {
+    value: true
+  });
+}));
diff --git a/backend/public/assets/activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js.gz b/backend/public/assets/activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js.gz
new file mode 100644
index 0000000..41703fb
Binary files /dev/null and b/backend/public/assets/activestorage-cf22a497d1956e8f0d3ec50f45d68961aa0d138ee062802c36ae384efb260aa2.js.gz differ
diff --git a/backend/public/assets/activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js b/backend/public/assets/activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js
new file mode 100644
index 0000000..1ac9835
--- /dev/null
+++ b/backend/public/assets/activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js
@@ -0,0 +1,848 @@
+var sparkMd5 = {
+  exports: {}
+};
+
+(function(module, exports) {
+  (function(factory) {
+    {
+      module.exports = factory();
+    }
+  })((function(undefined$1) {
+    var hex_chr = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" ];
+    function md5cycle(x, k) {
+      var a = x[0], b = x[1], c = x[2], d = x[3];
+      a += (b & c | ~b & d) + k[0] - 680876936 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[1] - 389564586 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[2] + 606105819 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[3] - 1044525330 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & c | ~b & d) + k[4] - 176418897 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[5] + 1200080426 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[6] - 1473231341 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[7] - 45705983 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & c | ~b & d) + k[8] + 1770035416 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[9] - 1958414417 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[10] - 42063 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[11] - 1990404162 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & c | ~b & d) + k[12] + 1804603682 | 0;
+      a = (a << 7 | a >>> 25) + b | 0;
+      d += (a & b | ~a & c) + k[13] - 40341101 | 0;
+      d = (d << 12 | d >>> 20) + a | 0;
+      c += (d & a | ~d & b) + k[14] - 1502002290 | 0;
+      c = (c << 17 | c >>> 15) + d | 0;
+      b += (c & d | ~c & a) + k[15] + 1236535329 | 0;
+      b = (b << 22 | b >>> 10) + c | 0;
+      a += (b & d | c & ~d) + k[1] - 165796510 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[6] - 1069501632 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[11] + 643717713 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[0] - 373897302 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b & d | c & ~d) + k[5] - 701558691 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[10] + 38016083 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[15] - 660478335 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[4] - 405537848 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b & d | c & ~d) + k[9] + 568446438 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[14] - 1019803690 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[3] - 187363961 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[8] + 1163531501 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b & d | c & ~d) + k[13] - 1444681467 | 0;
+      a = (a << 5 | a >>> 27) + b | 0;
+      d += (a & c | b & ~c) + k[2] - 51403784 | 0;
+      d = (d << 9 | d >>> 23) + a | 0;
+      c += (d & b | a & ~b) + k[7] + 1735328473 | 0;
+      c = (c << 14 | c >>> 18) + d | 0;
+      b += (c & a | d & ~a) + k[12] - 1926607734 | 0;
+      b = (b << 20 | b >>> 12) + c | 0;
+      a += (b ^ c ^ d) + k[5] - 378558 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[8] - 2022574463 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[11] + 1839030562 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[14] - 35309556 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (b ^ c ^ d) + k[1] - 1530992060 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[4] + 1272893353 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[7] - 155497632 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[10] - 1094730640 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (b ^ c ^ d) + k[13] + 681279174 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[0] - 358537222 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[3] - 722521979 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[6] + 76029189 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (b ^ c ^ d) + k[9] - 640364487 | 0;
+      a = (a << 4 | a >>> 28) + b | 0;
+      d += (a ^ b ^ c) + k[12] - 421815835 | 0;
+      d = (d << 11 | d >>> 21) + a | 0;
+      c += (d ^ a ^ b) + k[15] + 530742520 | 0;
+      c = (c << 16 | c >>> 16) + d | 0;
+      b += (c ^ d ^ a) + k[2] - 995338651 | 0;
+      b = (b << 23 | b >>> 9) + c | 0;
+      a += (c ^ (b | ~d)) + k[0] - 198630844 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[7] + 1126891415 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[14] - 1416354905 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[5] - 57434055 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      a += (c ^ (b | ~d)) + k[12] + 1700485571 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[3] - 1894986606 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[10] - 1051523 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[1] - 2054922799 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      a += (c ^ (b | ~d)) + k[8] + 1873313359 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[15] - 30611744 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[6] - 1560198380 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[13] + 1309151649 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      a += (c ^ (b | ~d)) + k[4] - 145523070 | 0;
+      a = (a << 6 | a >>> 26) + b | 0;
+      d += (b ^ (a | ~c)) + k[11] - 1120210379 | 0;
+      d = (d << 10 | d >>> 22) + a | 0;
+      c += (a ^ (d | ~b)) + k[2] + 718787259 | 0;
+      c = (c << 15 | c >>> 17) + d | 0;
+      b += (d ^ (c | ~a)) + k[9] - 343485551 | 0;
+      b = (b << 21 | b >>> 11) + c | 0;
+      x[0] = a + x[0] | 0;
+      x[1] = b + x[1] | 0;
+      x[2] = c + x[2] | 0;
+      x[3] = d + x[3] | 0;
+    }
+    function md5blk(s) {
+      var md5blks = [], i;
+      for (i = 0; i < 64; i += 4) {
+        md5blks[i >> 2] = s.charCodeAt(i) + (s.charCodeAt(i + 1) << 8) + (s.charCodeAt(i + 2) << 16) + (s.charCodeAt(i + 3) << 24);
+      }
+      return md5blks;
+    }
+    function md5blk_array(a) {
+      var md5blks = [], i;
+      for (i = 0; i < 64; i += 4) {
+        md5blks[i >> 2] = a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
+      }
+      return md5blks;
+    }
+    function md51(s) {
+      var n = s.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+      for (i = 64; i <= n; i += 64) {
+        md5cycle(state, md5blk(s.substring(i - 64, i)));
+      }
+      s = s.substring(i - 64);
+      length = s.length;
+      tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
+      }
+      tail[i >> 2] |= 128 << (i % 4 << 3);
+      if (i > 55) {
+        md5cycle(state, tail);
+        for (i = 0; i < 16; i += 1) {
+          tail[i] = 0;
+        }
+      }
+      tmp = n * 8;
+      tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+      lo = parseInt(tmp[2], 16);
+      hi = parseInt(tmp[1], 16) || 0;
+      tail[14] = lo;
+      tail[15] = hi;
+      md5cycle(state, tail);
+      return state;
+    }
+    function md51_array(a) {
+      var n = a.length, state = [ 1732584193, -271733879, -1732584194, 271733878 ], i, length, tail, tmp, lo, hi;
+      for (i = 64; i <= n; i += 64) {
+        md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
+      }
+      a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
+      length = a.length;
+      tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ];
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= a[i] << (i % 4 << 3);
+      }
+      tail[i >> 2] |= 128 << (i % 4 << 3);
+      if (i > 55) {
+        md5cycle(state, tail);
+        for (i = 0; i < 16; i += 1) {
+          tail[i] = 0;
+        }
+      }
+      tmp = n * 8;
+      tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+      lo = parseInt(tmp[2], 16);
+      hi = parseInt(tmp[1], 16) || 0;
+      tail[14] = lo;
+      tail[15] = hi;
+      md5cycle(state, tail);
+      return state;
+    }
+    function rhex(n) {
+      var s = "", j;
+      for (j = 0; j < 4; j += 1) {
+        s += hex_chr[n >> j * 8 + 4 & 15] + hex_chr[n >> j * 8 & 15];
+      }
+      return s;
+    }
+    function hex(x) {
+      var i;
+      for (i = 0; i < x.length; i += 1) {
+        x[i] = rhex(x[i]);
+      }
+      return x.join("");
+    }
+    if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") ;
+    if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
+      (function() {
+        function clamp(val, length) {
+          val = val | 0 || 0;
+          if (val < 0) {
+            return Math.max(val + length, 0);
+          }
+          return Math.min(val, length);
+        }
+        ArrayBuffer.prototype.slice = function(from, to) {
+          var length = this.byteLength, begin = clamp(from, length), end = length, num, target, targetArray, sourceArray;
+          if (to !== undefined$1) {
+            end = clamp(to, length);
+          }
+          if (begin > end) {
+            return new ArrayBuffer(0);
+          }
+          num = end - begin;
+          target = new ArrayBuffer(num);
+          targetArray = new Uint8Array(target);
+          sourceArray = new Uint8Array(this, begin, num);
+          targetArray.set(sourceArray);
+          return target;
+        };
+      })();
+    }
+    function toUtf8(str) {
+      if (/[\u0080-\uFFFF]/.test(str)) {
+        str = unescape(encodeURIComponent(str));
+      }
+      return str;
+    }
+    function utf8Str2ArrayBuffer(str, returnUInt8Array) {
+      var length = str.length, buff = new ArrayBuffer(length), arr = new Uint8Array(buff), i;
+      for (i = 0; i < length; i += 1) {
+        arr[i] = str.charCodeAt(i);
+      }
+      return returnUInt8Array ? arr : buff;
+    }
+    function arrayBuffer2Utf8Str(buff) {
+      return String.fromCharCode.apply(null, new Uint8Array(buff));
+    }
+    function concatenateArrayBuffers(first, second, returnUInt8Array) {
+      var result = new Uint8Array(first.byteLength + second.byteLength);
+      result.set(new Uint8Array(first));
+      result.set(new Uint8Array(second), first.byteLength);
+      return returnUInt8Array ? result : result.buffer;
+    }
+    function hexToBinaryString(hex) {
+      var bytes = [], length = hex.length, x;
+      for (x = 0; x < length - 1; x += 2) {
+        bytes.push(parseInt(hex.substr(x, 2), 16));
+      }
+      return String.fromCharCode.apply(String, bytes);
+    }
+    function SparkMD5() {
+      this.reset();
+    }
+    SparkMD5.prototype.append = function(str) {
+      this.appendBinary(toUtf8(str));
+      return this;
+    };
+    SparkMD5.prototype.appendBinary = function(contents) {
+      this._buff += contents;
+      this._length += contents.length;
+      var length = this._buff.length, i;
+      for (i = 64; i <= length; i += 64) {
+        md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));
+      }
+      this._buff = this._buff.substring(i - 64);
+      return this;
+    };
+    SparkMD5.prototype.end = function(raw) {
+      var buff = this._buff, length = buff.length, i, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], ret;
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);
+      }
+      this._finish(tail, length);
+      ret = hex(this._hash);
+      if (raw) {
+        ret = hexToBinaryString(ret);
+      }
+      this.reset();
+      return ret;
+    };
+    SparkMD5.prototype.reset = function() {
+      this._buff = "";
+      this._length = 0;
+      this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+      return this;
+    };
+    SparkMD5.prototype.getState = function() {
+      return {
+        buff: this._buff,
+        length: this._length,
+        hash: this._hash.slice()
+      };
+    };
+    SparkMD5.prototype.setState = function(state) {
+      this._buff = state.buff;
+      this._length = state.length;
+      this._hash = state.hash;
+      return this;
+    };
+    SparkMD5.prototype.destroy = function() {
+      delete this._hash;
+      delete this._buff;
+      delete this._length;
+    };
+    SparkMD5.prototype._finish = function(tail, length) {
+      var i = length, tmp, lo, hi;
+      tail[i >> 2] |= 128 << (i % 4 << 3);
+      if (i > 55) {
+        md5cycle(this._hash, tail);
+        for (i = 0; i < 16; i += 1) {
+          tail[i] = 0;
+        }
+      }
+      tmp = this._length * 8;
+      tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
+      lo = parseInt(tmp[2], 16);
+      hi = parseInt(tmp[1], 16) || 0;
+      tail[14] = lo;
+      tail[15] = hi;
+      md5cycle(this._hash, tail);
+    };
+    SparkMD5.hash = function(str, raw) {
+      return SparkMD5.hashBinary(toUtf8(str), raw);
+    };
+    SparkMD5.hashBinary = function(content, raw) {
+      var hash = md51(content), ret = hex(hash);
+      return raw ? hexToBinaryString(ret) : ret;
+    };
+    SparkMD5.ArrayBuffer = function() {
+      this.reset();
+    };
+    SparkMD5.ArrayBuffer.prototype.append = function(arr) {
+      var buff = concatenateArrayBuffers(this._buff.buffer, arr, true), length = buff.length, i;
+      this._length += arr.byteLength;
+      for (i = 64; i <= length; i += 64) {
+        md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));
+      }
+      this._buff = i - 64 < length ? new Uint8Array(buff.buffer.slice(i - 64)) : new Uint8Array(0);
+      return this;
+    };
+    SparkMD5.ArrayBuffer.prototype.end = function(raw) {
+      var buff = this._buff, length = buff.length, tail = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], i, ret;
+      for (i = 0; i < length; i += 1) {
+        tail[i >> 2] |= buff[i] << (i % 4 << 3);
+      }
+      this._finish(tail, length);
+      ret = hex(this._hash);
+      if (raw) {
+        ret = hexToBinaryString(ret);
+      }
+      this.reset();
+      return ret;
+    };
+    SparkMD5.ArrayBuffer.prototype.reset = function() {
+      this._buff = new Uint8Array(0);
+      this._length = 0;
+      this._hash = [ 1732584193, -271733879, -1732584194, 271733878 ];
+      return this;
+    };
+    SparkMD5.ArrayBuffer.prototype.getState = function() {
+      var state = SparkMD5.prototype.getState.call(this);
+      state.buff = arrayBuffer2Utf8Str(state.buff);
+      return state;
+    };
+    SparkMD5.ArrayBuffer.prototype.setState = function(state) {
+      state.buff = utf8Str2ArrayBuffer(state.buff, true);
+      return SparkMD5.prototype.setState.call(this, state);
+    };
+    SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
+    SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
+    SparkMD5.ArrayBuffer.hash = function(arr, raw) {
+      var hash = md51_array(new Uint8Array(arr)), ret = hex(hash);
+      return raw ? hexToBinaryString(ret) : ret;
+    };
+    return SparkMD5;
+  }));
+})(sparkMd5);
+
+var SparkMD5 = sparkMd5.exports;
+
+const fileSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;
+
+class FileChecksum {
+  static create(file, callback) {
+    const instance = new FileChecksum(file);
+    instance.create(callback);
+  }
+  constructor(file) {
+    this.file = file;
+    this.chunkSize = 2097152;
+    this.chunkCount = Math.ceil(this.file.size / this.chunkSize);
+    this.chunkIndex = 0;
+  }
+  create(callback) {
+    this.callback = callback;
+    this.md5Buffer = new SparkMD5.ArrayBuffer;
+    this.fileReader = new FileReader;
+    this.fileReader.addEventListener("load", (event => this.fileReaderDidLoad(event)));
+    this.fileReader.addEventListener("error", (event => this.fileReaderDidError(event)));
+    this.readNextChunk();
+  }
+  fileReaderDidLoad(event) {
+    this.md5Buffer.append(event.target.result);
+    if (!this.readNextChunk()) {
+      const binaryDigest = this.md5Buffer.end(true);
+      const base64digest = btoa(binaryDigest);
+      this.callback(null, base64digest);
+    }
+  }
+  fileReaderDidError(event) {
+    this.callback(`Error reading ${this.file.name}`);
+  }
+  readNextChunk() {
+    if (this.chunkIndex < this.chunkCount || this.chunkIndex == 0 && this.chunkCount == 0) {
+      const start = this.chunkIndex * this.chunkSize;
+      const end = Math.min(start + this.chunkSize, this.file.size);
+      const bytes = fileSlice.call(this.file, start, end);
+      this.fileReader.readAsArrayBuffer(bytes);
+      this.chunkIndex++;
+      return true;
+    } else {
+      return false;
+    }
+  }
+}
+
+function getMetaValue(name) {
+  const element = findElement(document.head, `meta[name="${name}"]`);
+  if (element) {
+    return element.getAttribute("content");
+  }
+}
+
+function findElements(root, selector) {
+  if (typeof root == "string") {
+    selector = root;
+    root = document;
+  }
+  const elements = root.querySelectorAll(selector);
+  return toArray(elements);
+}
+
+function findElement(root, selector) {
+  if (typeof root == "string") {
+    selector = root;
+    root = document;
+  }
+  return root.querySelector(selector);
+}
+
+function dispatchEvent(element, type, eventInit = {}) {
+  const {disabled: disabled} = element;
+  const {bubbles: bubbles, cancelable: cancelable, detail: detail} = eventInit;
+  const event = document.createEvent("Event");
+  event.initEvent(type, bubbles || true, cancelable || true);
+  event.detail = detail || {};
+  try {
+    element.disabled = false;
+    element.dispatchEvent(event);
+  } finally {
+    element.disabled = disabled;
+  }
+  return event;
+}
+
+function toArray(value) {
+  if (Array.isArray(value)) {
+    return value;
+  } else if (Array.from) {
+    return Array.from(value);
+  } else {
+    return [].slice.call(value);
+  }
+}
+
+class BlobRecord {
+  constructor(file, checksum, url, customHeaders = {}) {
+    this.file = file;
+    this.attributes = {
+      filename: file.name,
+      content_type: file.type || "application/octet-stream",
+      byte_size: file.size,
+      checksum: checksum
+    };
+    this.xhr = new XMLHttpRequest;
+    this.xhr.open("POST", url, true);
+    this.xhr.responseType = "json";
+    this.xhr.setRequestHeader("Content-Type", "application/json");
+    this.xhr.setRequestHeader("Accept", "application/json");
+    this.xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+    Object.keys(customHeaders).forEach((headerKey => {
+      this.xhr.setRequestHeader(headerKey, customHeaders[headerKey]);
+    }));
+    const csrfToken = getMetaValue("csrf-token");
+    if (csrfToken != undefined) {
+      this.xhr.setRequestHeader("X-CSRF-Token", csrfToken);
+    }
+    this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+    this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+  }
+  get status() {
+    return this.xhr.status;
+  }
+  get response() {
+    const {responseType: responseType, response: response} = this.xhr;
+    if (responseType == "json") {
+      return response;
+    } else {
+      return JSON.parse(response);
+    }
+  }
+  create(callback) {
+    this.callback = callback;
+    this.xhr.send(JSON.stringify({
+      blob: this.attributes
+    }));
+  }
+  requestDidLoad(event) {
+    if (this.status >= 200 && this.status < 300) {
+      const {response: response} = this;
+      const {direct_upload: direct_upload} = response;
+      delete response.direct_upload;
+      this.attributes = response;
+      this.directUploadData = direct_upload;
+      this.callback(null, this.toJSON());
+    } else {
+      this.requestDidError(event);
+    }
+  }
+  requestDidError(event) {
+    this.callback(`Error creating Blob for "${this.file.name}". Status: ${this.status}`);
+  }
+  toJSON() {
+    const result = {};
+    for (const key in this.attributes) {
+      result[key] = this.attributes[key];
+    }
+    return result;
+  }
+}
+
+class BlobUpload {
+  constructor(blob) {
+    this.blob = blob;
+    this.file = blob.file;
+    const {url: url, headers: headers} = blob.directUploadData;
+    this.xhr = new XMLHttpRequest;
+    this.xhr.open("PUT", url, true);
+    this.xhr.responseType = "text";
+    for (const key in headers) {
+      this.xhr.setRequestHeader(key, headers[key]);
+    }
+    this.xhr.addEventListener("load", (event => this.requestDidLoad(event)));
+    this.xhr.addEventListener("error", (event => this.requestDidError(event)));
+  }
+  create(callback) {
+    this.callback = callback;
+    this.xhr.send(this.file.slice());
+  }
+  requestDidLoad(event) {
+    const {status: status, response: response} = this.xhr;
+    if (status >= 200 && status < 300) {
+      this.callback(null, response);
+    } else {
+      this.requestDidError(event);
+    }
+  }
+  requestDidError(event) {
+    this.callback(`Error storing "${this.file.name}". Status: ${this.xhr.status}`);
+  }
+}
+
+let id = 0;
+
+class DirectUpload {
+  constructor(file, url, delegate, customHeaders = {}) {
+    this.id = ++id;
+    this.file = file;
+    this.url = url;
+    this.delegate = delegate;
+    this.customHeaders = customHeaders;
+  }
+  create(callback) {
+    FileChecksum.create(this.file, ((error, checksum) => {
+      if (error) {
+        callback(error);
+        return;
+      }
+      const blob = new BlobRecord(this.file, checksum, this.url, this.customHeaders);
+      notify(this.delegate, "directUploadWillCreateBlobWithXHR", blob.xhr);
+      blob.create((error => {
+        if (error) {
+          callback(error);
+        } else {
+          const upload = new BlobUpload(blob);
+          notify(this.delegate, "directUploadWillStoreFileWithXHR", upload.xhr);
+          upload.create((error => {
+            if (error) {
+              callback(error);
+            } else {
+              callback(null, blob.toJSON());
+            }
+          }));
+        }
+      }));
+    }));
+  }
+}
+
+function notify(object, methodName, ...messages) {
+  if (object && typeof object[methodName] == "function") {
+    return object[methodName](...messages);
+  }
+}
+
+class DirectUploadController {
+  constructor(input, file) {
+    this.input = input;
+    this.file = file;
+    this.directUpload = new DirectUpload(this.file, this.url, this);
+    this.dispatch("initialize");
+  }
+  start(callback) {
+    const hiddenInput = document.createElement("input");
+    hiddenInput.type = "hidden";
+    hiddenInput.name = this.input.name;
+    this.input.insertAdjacentElement("beforebegin", hiddenInput);
+    this.dispatch("start");
+    this.directUpload.create(((error, attributes) => {
+      if (error) {
+        hiddenInput.parentNode.removeChild(hiddenInput);
+        this.dispatchError(error);
+      } else {
+        hiddenInput.value = attributes.signed_id;
+      }
+      this.dispatch("end");
+      callback(error);
+    }));
+  }
+  uploadRequestDidProgress(event) {
+    const progress = event.loaded / event.total * 100;
+    if (progress) {
+      this.dispatch("progress", {
+        progress: progress
+      });
+    }
+  }
+  get url() {
+    return this.input.getAttribute("data-direct-upload-url");
+  }
+  dispatch(name, detail = {}) {
+    detail.file = this.file;
+    detail.id = this.directUpload.id;
+    return dispatchEvent(this.input, `direct-upload:${name}`, {
+      detail: detail
+    });
+  }
+  dispatchError(error) {
+    const event = this.dispatch("error", {
+      error: error
+    });
+    if (!event.defaultPrevented) {
+      alert(error);
+    }
+  }
+  directUploadWillCreateBlobWithXHR(xhr) {
+    this.dispatch("before-blob-request", {
+      xhr: xhr
+    });
+  }
+  directUploadWillStoreFileWithXHR(xhr) {
+    this.dispatch("before-storage-request", {
+      xhr: xhr
+    });
+    xhr.upload.addEventListener("progress", (event => this.uploadRequestDidProgress(event)));
+  }
+}
+
+const inputSelector = "input[type=file][data-direct-upload-url]:not([disabled])";
+
+class DirectUploadsController {
+  constructor(form) {
+    this.form = form;
+    this.inputs = findElements(form, inputSelector).filter((input => input.files.length));
+  }
+  start(callback) {
+    const controllers = this.createDirectUploadControllers();
+    const startNextController = () => {
+      const controller = controllers.shift();
+      if (controller) {
+        controller.start((error => {
+          if (error) {
+            callback(error);
+            this.dispatch("end");
+          } else {
+            startNextController();
+          }
+        }));
+      } else {
+        callback();
+        this.dispatch("end");
+      }
+    };
+    this.dispatch("start");
+    startNextController();
+  }
+  createDirectUploadControllers() {
+    const controllers = [];
+    this.inputs.forEach((input => {
+      toArray(input.files).forEach((file => {
+        const controller = new DirectUploadController(input, file);
+        controllers.push(controller);
+      }));
+    }));
+    return controllers;
+  }
+  dispatch(name, detail = {}) {
+    return dispatchEvent(this.form, `direct-uploads:${name}`, {
+      detail: detail
+    });
+  }
+}
+
+const processingAttribute = "data-direct-uploads-processing";
+
+const submitButtonsByForm = new WeakMap;
+
+let started = false;
+
+function start() {
+  if (!started) {
+    started = true;
+    document.addEventListener("click", didClick, true);
+    document.addEventListener("submit", didSubmitForm, true);
+    document.addEventListener("ajax:before", didSubmitRemoteElement);
+  }
+}
+
+function didClick(event) {
+  const button = event.target.closest("button, input");
+  if (button && button.type === "submit" && button.form) {
+    submitButtonsByForm.set(button.form, button);
+  }
+}
+
+function didSubmitForm(event) {
+  handleFormSubmissionEvent(event);
+}
+
+function didSubmitRemoteElement(event) {
+  if (event.target.tagName == "FORM") {
+    handleFormSubmissionEvent(event);
+  }
+}
+
+function handleFormSubmissionEvent(event) {
+  const form = event.target;
+  if (form.hasAttribute(processingAttribute)) {
+    event.preventDefault();
+    return;
+  }
+  const controller = new DirectUploadsController(form);
+  const {inputs: inputs} = controller;
+  if (inputs.length) {
+    event.preventDefault();
+    form.setAttribute(processingAttribute, "");
+    inputs.forEach(disable);
+    controller.start((error => {
+      form.removeAttribute(processingAttribute);
+      if (error) {
+        inputs.forEach(enable);
+      } else {
+        submitForm(form);
+      }
+    }));
+  }
+}
+
+function submitForm(form) {
+  let button = submitButtonsByForm.get(form) || findElement(form, "input[type=submit], button[type=submit]");
+  if (button) {
+    const {disabled: disabled} = button;
+    button.disabled = false;
+    button.focus();
+    button.click();
+    button.disabled = disabled;
+  } else {
+    button = document.createElement("input");
+    button.type = "submit";
+    button.style.display = "none";
+    form.appendChild(button);
+    button.click();
+    form.removeChild(button);
+  }
+  submitButtonsByForm.delete(form);
+}
+
+function disable(input) {
+  input.disabled = true;
+}
+
+function enable(input) {
+  input.disabled = false;
+}
+
+function autostart() {
+  if (window.ActiveStorage) {
+    start();
+  }
+}
+
+setTimeout(autostart, 1);
+
+export { DirectUpload, DirectUploadController, DirectUploadsController, dispatchEvent, start };
diff --git a/backend/public/assets/activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js.gz b/backend/public/assets/activestorage.esm-8bb028228e622c50501b3eb269cbe4044a46da07b565a90e5ae6f221dc06e485.js.gz
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new file mode 100644
index 0000000..b28b04f
--- /dev/null
+++ b/backend/public/assets/manifest-6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167.js
@@ -0,0 +1,3 @@
+
+
+
diff --git a/backend/public/assets/manifest-6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167.js.gz b/backend/public/assets/manifest-6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167.js.gz
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diff --git a/backend/public/assets/trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js b/backend/public/assets/trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js
new file mode 100644
index 0000000..1cd185f
--- /dev/null
+++ b/backend/public/assets/trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js
@@ -0,0 +1,13720 @@
+/*
+Trix 2.1.10
+Copyright © 2024 37signals, LLC
+ */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Trix = factory());
+})(this, (function () { 'use strict';
+
+  var name = "trix";
+  var version = "2.1.10";
+  var description = "A rich text editor for everyday writing";
+  var main = "dist/trix.umd.min.js";
+  var module = "dist/trix.esm.min.js";
+  var style = "dist/trix.css";
+  var files = [
+  	"dist/*.css",
+  	"dist/*.js",
+  	"dist/*.map",
+  	"src/{inspector,trix}/*.js"
+  ];
+  var repository = {
+  	type: "git",
+  	url: "git+https://github.com/basecamp/trix.git"
+  };
+  var keywords = [
+  	"rich text",
+  	"wysiwyg",
+  	"editor"
+  ];
+  var author = "37signals, LLC";
+  var license = "MIT";
+  var bugs = {
+  	url: "https://github.com/basecamp/trix/issues"
+  };
+  var homepage = "https://trix-editor.org/";
+  var devDependencies = {
+  	"@babel/core": "^7.16.0",
+  	"@babel/preset-env": "^7.16.4",
+  	"@rollup/plugin-babel": "^5.3.0",
+  	"@rollup/plugin-commonjs": "^22.0.2",
+  	"@rollup/plugin-json": "^4.1.0",
+  	"@rollup/plugin-node-resolve": "^13.3.0",
+  	"@web/dev-server": "^0.1.34",
+  	"babel-eslint": "^10.1.0",
+  	concurrently: "^7.4.0",
+  	eslint: "^7.32.0",
+  	esm: "^3.2.25",
+  	karma: "6.4.1",
+  	"karma-chrome-launcher": "3.2.0",
+  	"karma-qunit": "^4.1.2",
+  	"karma-sauce-launcher": "^4.3.6",
+  	"node-sass": "^7.0.1",
+  	qunit: "2.19.1",
+  	rangy: "^1.3.0",
+  	rollup: "^2.56.3",
+  	"rollup-plugin-includepaths": "^0.2.4",
+  	"rollup-plugin-terser": "^7.0.2",
+  	svgo: "^2.8.0",
+  	webdriverio: "^7.19.5"
+  };
+  var resolutions = {
+  	webdriverio: "^7.19.5"
+  };
+  var scripts = {
+  	"build-css": "node-sass --functions=./assets/trix/stylesheets/functions assets/trix.scss dist/trix.css",
+  	"build-js": "rollup -c",
+  	"build-assets": "cp -f assets/*.html dist/",
+  	build: "yarn run build-js && yarn run build-css && yarn run build-assets",
+  	watch: "rollup -c -w",
+  	lint: "eslint .",
+  	pretest: "yarn run lint && yarn run build",
+  	test: "karma start",
+  	prerelease: "yarn version && yarn test",
+  	release: "npm adduser && npm publish",
+  	postrelease: "git push && git push --tags",
+  	dev: "web-dev-server --app-index index.html  --root-dir dist --node-resolve --open",
+  	start: "yarn build-assets && concurrently --kill-others --names js,css,dev-server 'yarn watch' 'yarn build-css --watch' 'yarn dev'"
+  };
+  var dependencies = {
+  	dompurify: "^3.2.3"
+  };
+  var _package = {
+  	name: name,
+  	version: version,
+  	description: description,
+  	main: main,
+  	module: module,
+  	style: style,
+  	files: files,
+  	repository: repository,
+  	keywords: keywords,
+  	author: author,
+  	license: license,
+  	bugs: bugs,
+  	homepage: homepage,
+  	devDependencies: devDependencies,
+  	resolutions: resolutions,
+  	scripts: scripts,
+  	dependencies: dependencies
+  };
+
+  const attachmentSelector = "[data-trix-attachment]";
+  const attachments = {
+    preview: {
+      presentation: "gallery",
+      caption: {
+        name: true,
+        size: true
+      }
+    },
+    file: {
+      caption: {
+        size: true
+      }
+    }
+  };
+
+  const attributes = {
+    default: {
+      tagName: "div",
+      parse: false
+    },
+    quote: {
+      tagName: "blockquote",
+      nestable: true
+    },
+    heading1: {
+      tagName: "h1",
+      terminal: true,
+      breakOnReturn: true,
+      group: false
+    },
+    code: {
+      tagName: "pre",
+      terminal: true,
+      htmlAttributes: ["language"],
+      text: {
+        plaintext: true
+      }
+    },
+    bulletList: {
+      tagName: "ul",
+      parse: false
+    },
+    bullet: {
+      tagName: "li",
+      listAttribute: "bulletList",
+      group: false,
+      nestable: true,
+      test(element) {
+        return tagName$1(element.parentNode) === attributes[this.listAttribute].tagName;
+      }
+    },
+    numberList: {
+      tagName: "ol",
+      parse: false
+    },
+    number: {
+      tagName: "li",
+      listAttribute: "numberList",
+      group: false,
+      nestable: true,
+      test(element) {
+        return tagName$1(element.parentNode) === attributes[this.listAttribute].tagName;
+      }
+    },
+    attachmentGallery: {
+      tagName: "div",
+      exclusive: true,
+      terminal: true,
+      parse: false,
+      group: false
+    }
+  };
+  const tagName$1 = element => {
+    var _element$tagName;
+    return element === null || element === void 0 || (_element$tagName = element.tagName) === null || _element$tagName === void 0 ? void 0 : _element$tagName.toLowerCase();
+  };
+
+  const androidVersionMatch = navigator.userAgent.match(/android\s([0-9]+.*Chrome)/i);
+  const androidVersion = androidVersionMatch && parseInt(androidVersionMatch[1]);
+  var browser$1 = {
+    // Android emits composition events when moving the cursor through existing text
+    // Introduced in Chrome 65: https://bugs.chromium.org/p/chromium/issues/detail?id=764439#c9
+    composesExistingText: /Android.*Chrome/.test(navigator.userAgent),
+    // Android 13, especially on Samsung keyboards, emits extra compositionend and beforeinput events
+    // that can make the input handler lose the current selection or enter an infinite input -> render -> input
+    // loop.
+    recentAndroid: androidVersion && androidVersion > 12,
+    samsungAndroid: androidVersion && navigator.userAgent.match(/Android.*SM-/),
+    // IE 11 activates resizing handles on editable elements that have "layout"
+    forcesObjectResizing: /Trident.*rv:11/.test(navigator.userAgent),
+    // https://www.w3.org/TR/input-events-1/ + https://www.w3.org/TR/input-events-2/
+    supportsInputEvents: typeof InputEvent !== "undefined" && ["data", "getTargetRanges", "inputType"].every(prop => prop in InputEvent.prototype)
+  };
+
+  var css$3 = {
+    attachment: "attachment",
+    attachmentCaption: "attachment__caption",
+    attachmentCaptionEditor: "attachment__caption-editor",
+    attachmentMetadata: "attachment__metadata",
+    attachmentMetadataContainer: "attachment__metadata-container",
+    attachmentName: "attachment__name",
+    attachmentProgress: "attachment__progress",
+    attachmentSize: "attachment__size",
+    attachmentToolbar: "attachment__toolbar",
+    attachmentGallery: "attachment-gallery"
+  };
+
+  var lang$1 = {
+    attachFiles: "Attach Files",
+    bold: "Bold",
+    bullets: "Bullets",
+    byte: "Byte",
+    bytes: "Bytes",
+    captionPlaceholder: "Add a caption…",
+    code: "Code",
+    heading1: "Heading",
+    indent: "Increase Level",
+    italic: "Italic",
+    link: "Link",
+    numbers: "Numbers",
+    outdent: "Decrease Level",
+    quote: "Quote",
+    redo: "Redo",
+    remove: "Remove",
+    strike: "Strikethrough",
+    undo: "Undo",
+    unlink: "Unlink",
+    url: "URL",
+    urlPlaceholder: "Enter a URL…",
+    GB: "GB",
+    KB: "KB",
+    MB: "MB",
+    PB: "PB",
+    TB: "TB"
+  };
+
+  /* eslint-disable
+      no-case-declarations,
+  */
+  const sizes = [lang$1.bytes, lang$1.KB, lang$1.MB, lang$1.GB, lang$1.TB, lang$1.PB];
+  var file_size_formatting = {
+    prefix: "IEC",
+    precision: 2,
+    formatter(number) {
+      switch (number) {
+        case 0:
+          return "0 ".concat(lang$1.bytes);
+        case 1:
+          return "1 ".concat(lang$1.byte);
+        default:
+          let base;
+          if (this.prefix === "SI") {
+            base = 1000;
+          } else if (this.prefix === "IEC") {
+            base = 1024;
+          }
+          const exp = Math.floor(Math.log(number) / Math.log(base));
+          const humanSize = number / Math.pow(base, exp);
+          const string = humanSize.toFixed(this.precision);
+          const withoutInsignificantZeros = string.replace(/0*$/, "").replace(/\.$/, "");
+          return "".concat(withoutInsignificantZeros, " ").concat(sizes[exp]);
+      }
+    }
+  };
+
+  const ZERO_WIDTH_SPACE = "\uFEFF";
+  const NON_BREAKING_SPACE = "\u00A0";
+  const OBJECT_REPLACEMENT_CHARACTER = "\uFFFC";
+
+  const extend = function (properties) {
+    for (const key in properties) {
+      const value = properties[key];
+      this[key] = value;
+    }
+    return this;
+  };
+
+  const html$2 = document.documentElement;
+  const match = html$2.matches;
+  const handleEvent = function (eventName) {
+    let {
+      onElement,
+      matchingSelector,
+      withCallback,
+      inPhase,
+      preventDefault,
+      times
+    } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    const element = onElement ? onElement : html$2;
+    const selector = matchingSelector;
+    const useCapture = inPhase === "capturing";
+    const handler = function (event) {
+      if (times != null && --times === 0) {
+        handler.destroy();
+      }
+      const target = findClosestElementFromNode(event.target, {
+        matchingSelector: selector
+      });
+      if (target != null) {
+        withCallback === null || withCallback === void 0 || withCallback.call(target, event, target);
+        if (preventDefault) {
+          event.preventDefault();
+        }
+      }
+    };
+    handler.destroy = () => element.removeEventListener(eventName, handler, useCapture);
+    element.addEventListener(eventName, handler, useCapture);
+    return handler;
+  };
+  const handleEventOnce = function (eventName) {
+    let options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    options.times = 1;
+    return handleEvent(eventName, options);
+  };
+  const triggerEvent = function (eventName) {
+    let {
+      onElement,
+      bubbles,
+      cancelable,
+      attributes
+    } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    const element = onElement != null ? onElement : html$2;
+    bubbles = bubbles !== false;
+    cancelable = cancelable !== false;
+    const event = document.createEvent("Events");
+    event.initEvent(eventName, bubbles, cancelable);
+    if (attributes != null) {
+      extend.call(event, attributes);
+    }
+    return element.dispatchEvent(event);
+  };
+  const elementMatchesSelector = function (element, selector) {
+    if ((element === null || element === void 0 ? void 0 : element.nodeType) === 1) {
+      return match.call(element, selector);
+    }
+  };
+  const findClosestElementFromNode = function (node) {
+    let {
+      matchingSelector,
+      untilNode
+    } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    while (node && node.nodeType !== Node.ELEMENT_NODE) {
+      node = node.parentNode;
+    }
+    if (node == null) {
+      return;
+    }
+    if (matchingSelector != null) {
+      if (node.closest && untilNode == null) {
+        return node.closest(matchingSelector);
+      } else {
+        while (node && node !== untilNode) {
+          if (elementMatchesSelector(node, matchingSelector)) {
+            return node;
+          }
+          node = node.parentNode;
+        }
+      }
+    } else {
+      return node;
+    }
+  };
+  const findInnerElement = function (element) {
+    while ((_element = element) !== null && _element !== void 0 && _element.firstElementChild) {
+      var _element;
+      element = element.firstElementChild;
+    }
+    return element;
+  };
+  const innerElementIsActive = element => document.activeElement !== element && elementContainsNode(element, document.activeElement);
+  const elementContainsNode = function (element, node) {
+    if (!element || !node) {
+      return;
+    }
+    while (node) {
+      if (node === element) {
+        return true;
+      }
+      node = node.parentNode;
+    }
+  };
+  const findNodeFromContainerAndOffset = function (container, offset) {
+    if (!container) {
+      return;
+    }
+    if (container.nodeType === Node.TEXT_NODE) {
+      return container;
+    } else if (offset === 0) {
+      return container.firstChild != null ? container.firstChild : container;
+    } else {
+      return container.childNodes.item(offset - 1);
+    }
+  };
+  const findElementFromContainerAndOffset = function (container, offset) {
+    const node = findNodeFromContainerAndOffset(container, offset);
+    return findClosestElementFromNode(node);
+  };
+  const findChildIndexOfNode = function (node) {
+    var _node;
+    if (!((_node = node) !== null && _node !== void 0 && _node.parentNode)) {
+      return;
+    }
+    let childIndex = 0;
+    node = node.previousSibling;
+    while (node) {
+      childIndex++;
+      node = node.previousSibling;
+    }
+    return childIndex;
+  };
+  const removeNode = node => {
+    var _node$parentNode;
+    return node === null || node === void 0 || (_node$parentNode = node.parentNode) === null || _node$parentNode === void 0 ? void 0 : _node$parentNode.removeChild(node);
+  };
+  const walkTree = function (tree) {
+    let {
+      onlyNodesOfType,
+      usingFilter,
+      expandEntityReferences
+    } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    const whatToShow = (() => {
+      switch (onlyNodesOfType) {
+        case "element":
+          return NodeFilter.SHOW_ELEMENT;
+        case "text":
+          return NodeFilter.SHOW_TEXT;
+        case "comment":
+          return NodeFilter.SHOW_COMMENT;
+        default:
+          return NodeFilter.SHOW_ALL;
+      }
+    })();
+    return document.createTreeWalker(tree, whatToShow, usingFilter != null ? usingFilter : null, expandEntityReferences === true);
+  };
+  const tagName = element => {
+    var _element$tagName;
+    return element === null || element === void 0 || (_element$tagName = element.tagName) === null || _element$tagName === void 0 ? void 0 : _element$tagName.toLowerCase();
+  };
+  const makeElement = function (tag) {
+    let options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    let key, value;
+    if (typeof tag === "object") {
+      options = tag;
+      tag = options.tagName;
+    } else {
+      options = {
+        attributes: options
+      };
+    }
+    const element = document.createElement(tag);
+    if (options.editable != null) {
+      if (options.attributes == null) {
+        options.attributes = {};
+      }
+      options.attributes.contenteditable = options.editable;
+    }
+    if (options.attributes) {
+      for (key in options.attributes) {
+        value = options.attributes[key];
+        element.setAttribute(key, value);
+      }
+    }
+    if (options.style) {
+      for (key in options.style) {
+        value = options.style[key];
+        element.style[key] = value;
+      }
+    }
+    if (options.data) {
+      for (key in options.data) {
+        value = options.data[key];
+        element.dataset[key] = value;
+      }
+    }
+    if (options.className) {
+      options.className.split(" ").forEach(className => {
+        element.classList.add(className);
+      });
+    }
+    if (options.textContent) {
+      element.textContent = options.textContent;
+    }
+    if (options.childNodes) {
+      [].concat(options.childNodes).forEach(childNode => {
+        element.appendChild(childNode);
+      });
+    }
+    return element;
+  };
+  let blockTagNames = undefined;
+  const getBlockTagNames = function () {
+    if (blockTagNames != null) {
+      return blockTagNames;
+    }
+    blockTagNames = [];
+    for (const key in attributes) {
+      const attributes$1 = attributes[key];
+      if (attributes$1.tagName) {
+        blockTagNames.push(attributes$1.tagName);
+      }
+    }
+    return blockTagNames;
+  };
+  const nodeIsBlockContainer = node => nodeIsBlockStartComment(node === null || node === void 0 ? void 0 : node.firstChild);
+  const nodeProbablyIsBlockContainer = function (node) {
+    return getBlockTagNames().includes(tagName(node)) && !getBlockTagNames().includes(tagName(node.firstChild));
+  };
+  const nodeIsBlockStart = function (node) {
+    let {
+      strict
+    } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+      strict: true
+    };
+    if (strict) {
+      return nodeIsBlockStartComment(node);
+    } else {
+      return nodeIsBlockStartComment(node) || !nodeIsBlockStartComment(node.firstChild) && nodeProbablyIsBlockContainer(node);
+    }
+  };
+  const nodeIsBlockStartComment = node => nodeIsCommentNode(node) && (node === null || node === void 0 ? void 0 : node.data) === "block";
+  const nodeIsCommentNode = node => (node === null || node === void 0 ? void 0 : node.nodeType) === Node.COMMENT_NODE;
+  const nodeIsCursorTarget = function (node) {
+    let {
+      name
+    } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    if (!node) {
+      return;
+    }
+    if (nodeIsTextNode(node)) {
+      if (node.data === ZERO_WIDTH_SPACE) {
+        if (name) {
+          return node.parentNode.dataset.trixCursorTarget === name;
+        } else {
+          return true;
+        }
+      }
+    } else {
+      return nodeIsCursorTarget(node.firstChild);
+    }
+  };
+  const nodeIsAttachmentElement = node => elementMatchesSelector(node, attachmentSelector);
+  const nodeIsEmptyTextNode = node => nodeIsTextNode(node) && (node === null || node === void 0 ? void 0 : node.data) === "";
+  const nodeIsTextNode = node => (node === null || node === void 0 ? void 0 : node.nodeType) === Node.TEXT_NODE;
+
+  const input = {
+    level2Enabled: true,
+    getLevel() {
+      if (this.level2Enabled && browser$1.supportsInputEvents) {
+        return 2;
+      } else {
+        return 0;
+      }
+    },
+    pickFiles(callback) {
+      const input = makeElement("input", {
+        type: "file",
+        multiple: true,
+        hidden: true,
+        id: this.fileInputId
+      });
+      input.addEventListener("change", () => {
+        callback(input.files);
+        removeNode(input);
+      });
+      removeNode(document.getElementById(this.fileInputId));
+      document.body.appendChild(input);
+      input.click();
+    }
+  };
+
+  var key_names = {
+    8: "backspace",
+    9: "tab",
+    13: "return",
+    27: "escape",
+    37: "left",
+    39: "right",
+    46: "delete",
+    68: "d",
+    72: "h",
+    79: "o"
+  };
+
+  var parser = {
+    removeBlankTableCells: false,
+    tableCellSeparator: " | ",
+    tableRowSeparator: "\n"
+  };
+
+  var text_attributes = {
+    bold: {
+      tagName: "strong",
+      inheritable: true,
+      parser(element) {
+        const style = window.getComputedStyle(element);
+        return style.fontWeight === "bold" || style.fontWeight >= 600;
+      }
+    },
+    italic: {
+      tagName: "em",
+      inheritable: true,
+      parser(element) {
+        const style = window.getComputedStyle(element);
+        return style.fontStyle === "italic";
+      }
+    },
+    href: {
+      groupTagName: "a",
+      parser(element) {
+        const matchingSelector = "a:not(".concat(attachmentSelector, ")");
+        const link = element.closest(matchingSelector);
+        if (link) {
+          return link.getAttribute("href");
+        }
+      }
+    },
+    strike: {
+      tagName: "del",
+      inheritable: true
+    },
+    frozen: {
+      style: {
+        backgroundColor: "highlight"
+      }
+    }
+  };
+
+  var toolbar = {
+    getDefaultHTML() {
+      return "<div class=\"trix-button-row\">\n      <span class=\"trix-button-group trix-button-group--text-tools\" data-trix-button-group=\"text-tools\">\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-bold\" data-trix-attribute=\"bold\" data-trix-key=\"b\" title=\"".concat(lang$1.bold, "\" tabindex=\"-1\">").concat(lang$1.bold, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-italic\" data-trix-attribute=\"italic\" data-trix-key=\"i\" title=\"").concat(lang$1.italic, "\" tabindex=\"-1\">").concat(lang$1.italic, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-strike\" data-trix-attribute=\"strike\" title=\"").concat(lang$1.strike, "\" tabindex=\"-1\">").concat(lang$1.strike, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-link\" data-trix-attribute=\"href\" data-trix-action=\"link\" data-trix-key=\"k\" title=\"").concat(lang$1.link, "\" tabindex=\"-1\">").concat(lang$1.link, "</button>\n      </span>\n\n      <span class=\"trix-button-group trix-button-group--block-tools\" data-trix-button-group=\"block-tools\">\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-heading-1\" data-trix-attribute=\"heading1\" title=\"").concat(lang$1.heading1, "\" tabindex=\"-1\">").concat(lang$1.heading1, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-quote\" data-trix-attribute=\"quote\" title=\"").concat(lang$1.quote, "\" tabindex=\"-1\">").concat(lang$1.quote, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-code\" data-trix-attribute=\"code\" title=\"").concat(lang$1.code, "\" tabindex=\"-1\">").concat(lang$1.code, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-bullet-list\" data-trix-attribute=\"bullet\" title=\"").concat(lang$1.bullets, "\" tabindex=\"-1\">").concat(lang$1.bullets, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-number-list\" data-trix-attribute=\"number\" title=\"").concat(lang$1.numbers, "\" tabindex=\"-1\">").concat(lang$1.numbers, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-decrease-nesting-level\" data-trix-action=\"decreaseNestingLevel\" title=\"").concat(lang$1.outdent, "\" tabindex=\"-1\">").concat(lang$1.outdent, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-increase-nesting-level\" data-trix-action=\"increaseNestingLevel\" title=\"").concat(lang$1.indent, "\" tabindex=\"-1\">").concat(lang$1.indent, "</button>\n      </span>\n\n      <span class=\"trix-button-group trix-button-group--file-tools\" data-trix-button-group=\"file-tools\">\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-attach\" data-trix-action=\"attachFiles\" title=\"").concat(lang$1.attachFiles, "\" tabindex=\"-1\">").concat(lang$1.attachFiles, "</button>\n      </span>\n\n      <span class=\"trix-button-group-spacer\"></span>\n\n      <span class=\"trix-button-group trix-button-group--history-tools\" data-trix-button-group=\"history-tools\">\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-undo\" data-trix-action=\"undo\" data-trix-key=\"z\" title=\"").concat(lang$1.undo, "\" tabindex=\"-1\">").concat(lang$1.undo, "</button>\n        <button type=\"button\" class=\"trix-button trix-button--icon trix-button--icon-redo\" data-trix-action=\"redo\" data-trix-key=\"shift+z\" title=\"").concat(lang$1.redo, "\" tabindex=\"-1\">").concat(lang$1.redo, "</button>\n      </span>\n    </div>\n\n    <div class=\"trix-dialogs\" data-trix-dialogs>\n      <div class=\"trix-dialog trix-dialog--link\" data-trix-dialog=\"href\" data-trix-dialog-attribute=\"href\">\n        <div class=\"trix-dialog__link-fields\">\n          <input type=\"url\" name=\"href\" class=\"trix-input trix-input--dialog\" placeholder=\"").concat(lang$1.urlPlaceholder, "\" aria-label=\"").concat(lang$1.url, "\" required data-trix-input>\n          <div class=\"trix-button-group\">\n            <input type=\"button\" class=\"trix-button trix-button--dialog\" value=\"").concat(lang$1.link, "\" data-trix-method=\"setAttribute\">\n            <input type=\"button\" class=\"trix-button trix-button--dialog\" value=\"").concat(lang$1.unlink, "\" data-trix-method=\"removeAttribute\">\n          </div>\n        </div>\n      </div>\n    </div>");
+    }
+  };
+
+  const undo = {
+    interval: 5000
+  };
+
+  var config = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    attachments: attachments,
+    blockAttributes: attributes,
+    browser: browser$1,
+    css: css$3,
+    fileSize: file_size_formatting,
+    input: input,
+    keyNames: key_names,
+    lang: lang$1,
+    parser: parser,
+    textAttributes: text_attributes,
+    toolbar: toolbar,
+    undo: undo
+  });
+
+  class BasicObject {
+    static proxyMethod(expression) {
+      const {
+        name,
+        toMethod,
+        toProperty,
+        optional
+      } = parseProxyMethodExpression(expression);
+      this.prototype[name] = function () {
+        let subject;
+        let object;
+        if (toMethod) {
+          if (optional) {
+            var _this$toMethod;
+            object = (_this$toMethod = this[toMethod]) === null || _this$toMethod === void 0 ? void 0 : _this$toMethod.call(this);
+          } else {
+            object = this[toMethod]();
+          }
+        } else if (toProperty) {
+          object = this[toProperty];
+        }
+        if (optional) {
+          var _object;
+          subject = (_object = object) === null || _object === void 0 ? void 0 : _object[name];
+          if (subject) {
+            return apply$1.call(subject, object, arguments);
+          }
+        } else {
+          subject = object[name];
+          return apply$1.call(subject, object, arguments);
+        }
+      };
+    }
+  }
+  const parseProxyMethodExpression = function (expression) {
+    const match = expression.match(proxyMethodExpressionPattern);
+    if (!match) {
+      throw new Error("can't parse @proxyMethod expression: ".concat(expression));
+    }
+    const args = {
+      name: match[4]
+    };
+    if (match[2] != null) {
+      args.toMethod = match[1];
+    } else {
+      args.toProperty = match[1];
+    }
+    if (match[3] != null) {
+      args.optional = true;
+    }
+    return args;
+  };
+  const {
+    apply: apply$1
+  } = Function.prototype;
+  const proxyMethodExpressionPattern = new RegExp("\
+^\
+(.+?)\
+(\\(\\))?\
+(\\?)?\
+\\.\
+(.+?)\
+$\
+");
+
+  var _Array$from, _$codePointAt$1, _$1, _String$fromCodePoint;
+  class UTF16String extends BasicObject {
+    static box() {
+      let value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "";
+      if (value instanceof this) {
+        return value;
+      } else {
+        return this.fromUCS2String(value === null || value === void 0 ? void 0 : value.toString());
+      }
+    }
+    static fromUCS2String(ucs2String) {
+      return new this(ucs2String, ucs2decode(ucs2String));
+    }
+    static fromCodepoints(codepoints) {
+      return new this(ucs2encode(codepoints), codepoints);
+    }
+    constructor(ucs2String, codepoints) {
+      super(...arguments);
+      this.ucs2String = ucs2String;
+      this.codepoints = codepoints;
+      this.length = this.codepoints.length;
+      this.ucs2Length = this.ucs2String.length;
+    }
+    offsetToUCS2Offset(offset) {
+      return ucs2encode(this.codepoints.slice(0, Math.max(0, offset))).length;
+    }
+    offsetFromUCS2Offset(ucs2Offset) {
+      return ucs2decode(this.ucs2String.slice(0, Math.max(0, ucs2Offset))).length;
+    }
+    slice() {
+      return this.constructor.fromCodepoints(this.codepoints.slice(...arguments));
+    }
+    charAt(offset) {
+      return this.slice(offset, offset + 1);
+    }
+    isEqualTo(value) {
+      return this.constructor.box(value).ucs2String === this.ucs2String;
+    }
+    toJSON() {
+      return this.ucs2String;
+    }
+    getCacheKey() {
+      return this.ucs2String;
+    }
+    toString() {
+      return this.ucs2String;
+    }
+  }
+  const hasArrayFrom = ((_Array$from = Array.from) === null || _Array$from === void 0 ? void 0 : _Array$from.call(Array, "\ud83d\udc7c").length) === 1;
+  const hasStringCodePointAt$1 = ((_$codePointAt$1 = (_$1 = " ").codePointAt) === null || _$codePointAt$1 === void 0 ? void 0 : _$codePointAt$1.call(_$1, 0)) != null;
+  const hasStringFromCodePoint = ((_String$fromCodePoint = String.fromCodePoint) === null || _String$fromCodePoint === void 0 ? void 0 : _String$fromCodePoint.call(String, 32, 128124)) === " \ud83d\udc7c";
+
+  // UCS-2 conversion helpers ported from Mathias Bynens' Punycode.js:
+  // https://github.com/bestiejs/punycode.js#punycodeucs2
+
+  let ucs2decode, ucs2encode;
+
+  // Creates an array containing the numeric code points of each Unicode
+  // character in the string. While JavaScript uses UCS-2 internally,
+  // this function will convert a pair of surrogate halves (each of which
+  // UCS-2 exposes as separate characters) into a single code point,
+  // matching UTF-16.
+  if (hasArrayFrom && hasStringCodePointAt$1) {
+    ucs2decode = string => Array.from(string).map(char => char.codePointAt(0));
+  } else {
+    ucs2decode = function (string) {
+      const output = [];
+      let counter = 0;
+      const {
+        length
+      } = string;
+      while (counter < length) {
+        let value = string.charCodeAt(counter++);
+        if (0xd800 <= value && value <= 0xdbff && counter < length) {
+          // high surrogate, and there is a next character
+          const extra = string.charCodeAt(counter++);
+          if ((extra & 0xfc00) === 0xdc00) {
+            // low surrogate
+            value = ((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000;
+          } else {
+            // unmatched surrogate; only append this code unit, in case the
+            // next code unit is the high surrogate of a surrogate pair
+            counter--;
+          }
+        }
+        output.push(value);
+      }
+      return output;
+    };
+  }
+
+  // Creates a string based on an array of numeric code points.
+  if (hasStringFromCodePoint) {
+    ucs2encode = array => String.fromCodePoint(...Array.from(array || []));
+  } else {
+    ucs2encode = function (array) {
+      const characters = (() => {
+        const result = [];
+        Array.from(array).forEach(value => {
+          let output = "";
+          if (value > 0xffff) {
+            value -= 0x10000;
+            output += String.fromCharCode(value >>> 10 & 0x3ff | 0xd800);
+            value = 0xdc00 | value & 0x3ff;
+          }
+          result.push(output + String.fromCharCode(value));
+        });
+        return result;
+      })();
+      return characters.join("");
+    };
+  }
+
+  let id$2 = 0;
+  class TrixObject extends BasicObject {
+    static fromJSONString(jsonString) {
+      return this.fromJSON(JSON.parse(jsonString));
+    }
+    constructor() {
+      super(...arguments);
+      this.id = ++id$2;
+    }
+    hasSameConstructorAs(object) {
+      return this.constructor === (object === null || object === void 0 ? void 0 : object.constructor);
+    }
+    isEqualTo(object) {
+      return this === object;
+    }
+    inspect() {
+      const parts = [];
+      const contents = this.contentsForInspection() || {};
+      for (const key in contents) {
+        const value = contents[key];
+        parts.push("".concat(key, "=").concat(value));
+      }
+      return "#<".concat(this.constructor.name, ":").concat(this.id).concat(parts.length ? " ".concat(parts.join(", ")) : "", ">");
+    }
+    contentsForInspection() {}
+    toJSONString() {
+      return JSON.stringify(this);
+    }
+    toUTF16String() {
+      return UTF16String.box(this);
+    }
+    getCacheKey() {
+      return this.id.toString();
+    }
+  }
+
+  /* eslint-disable
+      id-length,
+  */
+  const arraysAreEqual = function () {
+    let a = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+    let b = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+    if (a.length !== b.length) {
+      return false;
+    }
+    for (let index = 0; index < a.length; index++) {
+      const value = a[index];
+      if (value !== b[index]) {
+        return false;
+      }
+    }
+    return true;
+  };
+  const arrayStartsWith = function () {
+    let a = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+    let b = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+    return arraysAreEqual(a.slice(0, b.length), b);
+  };
+  const spliceArray = function (array) {
+    const result = array.slice(0);
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+    result.splice(...args);
+    return result;
+  };
+  const summarizeArrayChange = function () {
+    let oldArray = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+    let newArray = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+    const added = [];
+    const removed = [];
+    const existingValues = new Set();
+    oldArray.forEach(value => {
+      existingValues.add(value);
+    });
+    const currentValues = new Set();
+    newArray.forEach(value => {
+      currentValues.add(value);
+      if (!existingValues.has(value)) {
+        added.push(value);
+      }
+    });
+    oldArray.forEach(value => {
+      if (!currentValues.has(value)) {
+        removed.push(value);
+      }
+    });
+    return {
+      added,
+      removed
+    };
+  };
+
+  // https://github.com/mathiasbynens/unicode-2.1.8/blob/master/Bidi_Class/Right_To_Left/regex.js
+  const RTL_PATTERN = /[\u05BE\u05C0\u05C3\u05D0-\u05EA\u05F0-\u05F4\u061B\u061F\u0621-\u063A\u0640-\u064A\u066D\u0671-\u06B7\u06BA-\u06BE\u06C0-\u06CE\u06D0-\u06D5\u06E5\u06E6\u200F\u202B\u202E\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE72\uFE74\uFE76-\uFEFC]/;
+  const getDirection = function () {
+    const input = makeElement("input", {
+      dir: "auto",
+      name: "x",
+      dirName: "x.dir"
+    });
+    const textArea = makeElement("textarea", {
+      dir: "auto",
+      name: "y",
+      dirName: "y.dir"
+    });
+    const form = makeElement("form");
+    form.appendChild(input);
+    form.appendChild(textArea);
+    const supportsDirName = function () {
+      try {
+        return new FormData(form).has(textArea.dirName);
+      } catch (error) {
+        return false;
+      }
+    }();
+    const supportsDirSelector = function () {
+      try {
+        return input.matches(":dir(ltr),:dir(rtl)");
+      } catch (error) {
+        return false;
+      }
+    }();
+    if (supportsDirName) {
+      return function (string) {
+        textArea.value = string;
+        return new FormData(form).get(textArea.dirName);
+      };
+    } else if (supportsDirSelector) {
+      return function (string) {
+        input.value = string;
+        if (input.matches(":dir(rtl)")) {
+          return "rtl";
+        } else {
+          return "ltr";
+        }
+      };
+    } else {
+      return function (string) {
+        const char = string.trim().charAt(0);
+        if (RTL_PATTERN.test(char)) {
+          return "rtl";
+        } else {
+          return "ltr";
+        }
+      };
+    }
+  }();
+
+  let allAttributeNames = null;
+  let blockAttributeNames = null;
+  let textAttributeNames = null;
+  let listAttributeNames = null;
+  const getAllAttributeNames = () => {
+    if (!allAttributeNames) {
+      allAttributeNames = getTextAttributeNames().concat(getBlockAttributeNames());
+    }
+    return allAttributeNames;
+  };
+  const getBlockConfig = attributeName => attributes[attributeName];
+  const getBlockAttributeNames = () => {
+    if (!blockAttributeNames) {
+      blockAttributeNames = Object.keys(attributes);
+    }
+    return blockAttributeNames;
+  };
+  const getTextConfig = attributeName => text_attributes[attributeName];
+  const getTextAttributeNames = () => {
+    if (!textAttributeNames) {
+      textAttributeNames = Object.keys(text_attributes);
+    }
+    return textAttributeNames;
+  };
+  const getListAttributeNames = () => {
+    if (!listAttributeNames) {
+      listAttributeNames = [];
+      for (const key in attributes) {
+        const {
+          listAttribute
+        } = attributes[key];
+        if (listAttribute != null) {
+          listAttributeNames.push(listAttribute);
+        }
+      }
+    }
+    return listAttributeNames;
+  };
+
+  /* eslint-disable
+  */
+  const installDefaultCSSForTagName = function (tagName, defaultCSS) {
+    const styleElement = insertStyleElementForTagName(tagName);
+    styleElement.textContent = defaultCSS.replace(/%t/g, tagName);
+  };
+  const insertStyleElementForTagName = function (tagName) {
+    const element = document.createElement("style");
+    element.setAttribute("type", "text/css");
+    element.setAttribute("data-tag-name", tagName.toLowerCase());
+    const nonce = getCSPNonce();
+    if (nonce) {
+      element.setAttribute("nonce", nonce);
+    }
+    document.head.insertBefore(element, document.head.firstChild);
+    return element;
+  };
+  const getCSPNonce = function () {
+    const element = getMetaElement("trix-csp-nonce") || getMetaElement("csp-nonce");
+    if (element) {
+      const {
+        nonce,
+        content
+      } = element;
+      return nonce == "" ? content : nonce;
+    }
+  };
+  const getMetaElement = name => document.head.querySelector("meta[name=".concat(name, "]"));
+
+  const testTransferData = {
+    "application/x-trix-feature-detection": "test"
+  };
+  const dataTransferIsPlainText = function (dataTransfer) {
+    const text = dataTransfer.getData("text/plain");
+    const html = dataTransfer.getData("text/html");
+    if (text && html) {
+      const {
+        body
+      } = new DOMParser().parseFromString(html, "text/html");
+      if (body.textContent === text) {
+        return !body.querySelector("*");
+      }
+    } else {
+      return text === null || text === void 0 ? void 0 : text.length;
+    }
+  };
+  const dataTransferIsMsOfficePaste = _ref => {
+    let {
+      dataTransfer
+    } = _ref;
+    return dataTransfer.types.includes("Files") && dataTransfer.types.includes("text/html") && dataTransfer.getData("text/html").includes("urn:schemas-microsoft-com:office:office");
+  };
+  const dataTransferIsWritable = function (dataTransfer) {
+    if (!(dataTransfer !== null && dataTransfer !== void 0 && dataTransfer.setData)) return false;
+    for (const key in testTransferData) {
+      const value = testTransferData[key];
+      try {
+        dataTransfer.setData(key, value);
+        if (!dataTransfer.getData(key) === value) return false;
+      } catch (error) {
+        return false;
+      }
+    }
+    return true;
+  };
+  const keyEventIsKeyboardCommand = function () {
+    if (/Mac|^iP/.test(navigator.platform)) {
+      return event => event.metaKey;
+    } else {
+      return event => event.ctrlKey;
+    }
+  }();
+  function shouldRenderInmmediatelyToDealWithIOSDictation(inputEvent) {
+    if (/iPhone|iPad/.test(navigator.userAgent)) {
+      // Handle garbled content and duplicated newlines when using dictation on iOS 18+. Upon dictation completion, iOS sends
+      // the list of insertText / insertParagraph events in a quick sequence. If we don't render
+      // the editor synchronously, the internal range fails to update and results in garbled content or duplicated newlines.
+      //
+      // This workaround is necessary because iOS doesn't send composing events as expected while dictating:
+      // https://bugs.webkit.org/show_bug.cgi?id=261764
+      return !inputEvent.inputType || inputEvent.inputType === "insertParagraph";
+    } else {
+      return false;
+    }
+  }
+
+  const defer = fn => setTimeout(fn, 1);
+
+  /* eslint-disable
+      id-length,
+  */
+  const copyObject = function () {
+    let object = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+    const result = {};
+    for (const key in object) {
+      const value = object[key];
+      result[key] = value;
+    }
+    return result;
+  };
+  const objectsAreEqual = function () {
+    let a = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+    let b = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    if (Object.keys(a).length !== Object.keys(b).length) {
+      return false;
+    }
+    for (const key in a) {
+      const value = a[key];
+      if (value !== b[key]) {
+        return false;
+      }
+    }
+    return true;
+  };
+
+  const normalizeRange = function (range) {
+    if (range == null) return;
+    if (!Array.isArray(range)) {
+      range = [range, range];
+    }
+    return [copyValue(range[0]), copyValue(range[1] != null ? range[1] : range[0])];
+  };
+  const rangeIsCollapsed = function (range) {
+    if (range == null) return;
+    const [start, end] = normalizeRange(range);
+    return rangeValuesAreEqual(start, end);
+  };
+  const rangesAreEqual = function (leftRange, rightRange) {
+    if (leftRange == null || rightRange == null) return;
+    const [leftStart, leftEnd] = normalizeRange(leftRange);
+    const [rightStart, rightEnd] = normalizeRange(rightRange);
+    return rangeValuesAreEqual(leftStart, rightStart) && rangeValuesAreEqual(leftEnd, rightEnd);
+  };
+  const copyValue = function (value) {
+    if (typeof value === "number") {
+      return value;
+    } else {
+      return copyObject(value);
+    }
+  };
+  const rangeValuesAreEqual = function (left, right) {
+    if (typeof left === "number") {
+      return left === right;
+    } else {
+      return objectsAreEqual(left, right);
+    }
+  };
+
+  class SelectionChangeObserver extends BasicObject {
+    constructor() {
+      super(...arguments);
+      this.update = this.update.bind(this);
+      this.selectionManagers = [];
+    }
+    start() {
+      if (!this.started) {
+        this.started = true;
+        document.addEventListener("selectionchange", this.update, true);
+      }
+    }
+    stop() {
+      if (this.started) {
+        this.started = false;
+        return document.removeEventListener("selectionchange", this.update, true);
+      }
+    }
+    registerSelectionManager(selectionManager) {
+      if (!this.selectionManagers.includes(selectionManager)) {
+        this.selectionManagers.push(selectionManager);
+        return this.start();
+      }
+    }
+    unregisterSelectionManager(selectionManager) {
+      this.selectionManagers = this.selectionManagers.filter(sm => sm !== selectionManager);
+      if (this.selectionManagers.length === 0) {
+        return this.stop();
+      }
+    }
+    notifySelectionManagersOfSelectionChange() {
+      return this.selectionManagers.map(selectionManager => selectionManager.selectionDidChange());
+    }
+    update() {
+      this.notifySelectionManagersOfSelectionChange();
+    }
+    reset() {
+      this.update();
+    }
+  }
+  const selectionChangeObserver = new SelectionChangeObserver();
+  const getDOMSelection = function () {
+    const selection = window.getSelection();
+    if (selection.rangeCount > 0) {
+      return selection;
+    }
+  };
+  const getDOMRange = function () {
+    var _getDOMSelection;
+    const domRange = (_getDOMSelection = getDOMSelection()) === null || _getDOMSelection === void 0 ? void 0 : _getDOMSelection.getRangeAt(0);
+    if (domRange) {
+      if (!domRangeIsPrivate(domRange)) {
+        return domRange;
+      }
+    }
+  };
+  const setDOMRange = function (domRange) {
+    const selection = window.getSelection();
+    selection.removeAllRanges();
+    selection.addRange(domRange);
+    return selectionChangeObserver.update();
+  };
+
+  // In Firefox, clicking certain <input> elements changes the selection to a
+  // private element used to draw its UI. Attempting to access properties of those
+  // elements throws an error.
+  // https://bugzilla.mozilla.org/show_bug.cgi?id=208427
+  const domRangeIsPrivate = domRange => nodeIsPrivate(domRange.startContainer) || nodeIsPrivate(domRange.endContainer);
+  const nodeIsPrivate = node => !Object.getPrototypeOf(node);
+
+  /* eslint-disable
+      id-length,
+      no-useless-escape,
+  */
+  const normalizeSpaces = string => string.replace(new RegExp("".concat(ZERO_WIDTH_SPACE), "g"), "").replace(new RegExp("".concat(NON_BREAKING_SPACE), "g"), " ");
+  const normalizeNewlines = string => string.replace(/\r\n?/g, "\n");
+  const breakableWhitespacePattern = new RegExp("[^\\S".concat(NON_BREAKING_SPACE, "]"));
+  const squishBreakableWhitespace = string => string
+  // Replace all breakable whitespace characters with a space
+  .replace(new RegExp("".concat(breakableWhitespacePattern.source), "g"), " ")
+  // Replace two or more spaces with a single space
+  .replace(/\ {2,}/g, " ");
+  const summarizeStringChange = function (oldString, newString) {
+    let added, removed;
+    oldString = UTF16String.box(oldString);
+    newString = UTF16String.box(newString);
+    if (newString.length < oldString.length) {
+      [removed, added] = utf16StringDifferences(oldString, newString);
+    } else {
+      [added, removed] = utf16StringDifferences(newString, oldString);
+    }
+    return {
+      added,
+      removed
+    };
+  };
+  const utf16StringDifferences = function (a, b) {
+    if (a.isEqualTo(b)) {
+      return ["", ""];
+    }
+    const diffA = utf16StringDifference(a, b);
+    const {
+      length
+    } = diffA.utf16String;
+    let diffB;
+    if (length) {
+      const {
+        offset
+      } = diffA;
+      const codepoints = a.codepoints.slice(0, offset).concat(a.codepoints.slice(offset + length));
+      diffB = utf16StringDifference(b, UTF16String.fromCodepoints(codepoints));
+    } else {
+      diffB = utf16StringDifference(b, a);
+    }
+    return [diffA.utf16String.toString(), diffB.utf16String.toString()];
+  };
+  const utf16StringDifference = function (a, b) {
+    let leftIndex = 0;
+    let rightIndexA = a.length;
+    let rightIndexB = b.length;
+    while (leftIndex < rightIndexA && a.charAt(leftIndex).isEqualTo(b.charAt(leftIndex))) {
+      leftIndex++;
+    }
+    while (rightIndexA > leftIndex + 1 && a.charAt(rightIndexA - 1).isEqualTo(b.charAt(rightIndexB - 1))) {
+      rightIndexA--;
+      rightIndexB--;
+    }
+    return {
+      utf16String: a.slice(leftIndex, rightIndexA),
+      offset: leftIndex
+    };
+  };
+
+  class Hash extends TrixObject {
+    static fromCommonAttributesOfObjects() {
+      let objects = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      if (!objects.length) {
+        return new this();
+      }
+      let hash = box(objects[0]);
+      let keys = hash.getKeys();
+      objects.slice(1).forEach(object => {
+        keys = hash.getKeysCommonToHash(box(object));
+        hash = hash.slice(keys);
+      });
+      return hash;
+    }
+    static box(values) {
+      return box(values);
+    }
+    constructor() {
+      let values = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      super(...arguments);
+      this.values = copy(values);
+    }
+    add(key, value) {
+      return this.merge(object(key, value));
+    }
+    remove(key) {
+      return new Hash(copy(this.values, key));
+    }
+    get(key) {
+      return this.values[key];
+    }
+    has(key) {
+      return key in this.values;
+    }
+    merge(values) {
+      return new Hash(merge(this.values, unbox(values)));
+    }
+    slice(keys) {
+      const values = {};
+      Array.from(keys).forEach(key => {
+        if (this.has(key)) {
+          values[key] = this.values[key];
+        }
+      });
+      return new Hash(values);
+    }
+    getKeys() {
+      return Object.keys(this.values);
+    }
+    getKeysCommonToHash(hash) {
+      hash = box(hash);
+      return this.getKeys().filter(key => this.values[key] === hash.values[key]);
+    }
+    isEqualTo(values) {
+      return arraysAreEqual(this.toArray(), box(values).toArray());
+    }
+    isEmpty() {
+      return this.getKeys().length === 0;
+    }
+    toArray() {
+      if (!this.array) {
+        const result = [];
+        for (const key in this.values) {
+          const value = this.values[key];
+          result.push(result.push(key, value));
+        }
+        this.array = result.slice(0);
+      }
+      return this.array;
+    }
+    toObject() {
+      return copy(this.values);
+    }
+    toJSON() {
+      return this.toObject();
+    }
+    contentsForInspection() {
+      return {
+        values: JSON.stringify(this.values)
+      };
+    }
+  }
+  const object = function (key, value) {
+    const result = {};
+    result[key] = value;
+    return result;
+  };
+  const merge = function (object, values) {
+    const result = copy(object);
+    for (const key in values) {
+      const value = values[key];
+      result[key] = value;
+    }
+    return result;
+  };
+  const copy = function (object, keyToRemove) {
+    const result = {};
+    const sortedKeys = Object.keys(object).sort();
+    sortedKeys.forEach(key => {
+      if (key !== keyToRemove) {
+        result[key] = object[key];
+      }
+    });
+    return result;
+  };
+  const box = function (object) {
+    if (object instanceof Hash) {
+      return object;
+    } else {
+      return new Hash(object);
+    }
+  };
+  const unbox = function (object) {
+    if (object instanceof Hash) {
+      return object.values;
+    } else {
+      return object;
+    }
+  };
+
+  class ObjectGroup {
+    static groupObjects() {
+      let ungroupedObjects = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      let {
+        depth,
+        asTree
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let group;
+      if (asTree) {
+        if (depth == null) {
+          depth = 0;
+        }
+      }
+      const objects = [];
+      Array.from(ungroupedObjects).forEach(object => {
+        var _object$canBeGrouped2;
+        if (group) {
+          var _object$canBeGrouped, _group$canBeGroupedWi, _group;
+          if ((_object$canBeGrouped = object.canBeGrouped) !== null && _object$canBeGrouped !== void 0 && _object$canBeGrouped.call(object, depth) && (_group$canBeGroupedWi = (_group = group[group.length - 1]).canBeGroupedWith) !== null && _group$canBeGroupedWi !== void 0 && _group$canBeGroupedWi.call(_group, object, depth)) {
+            group.push(object);
+            return;
+          } else {
+            objects.push(new this(group, {
+              depth,
+              asTree
+            }));
+            group = null;
+          }
+        }
+        if ((_object$canBeGrouped2 = object.canBeGrouped) !== null && _object$canBeGrouped2 !== void 0 && _object$canBeGrouped2.call(object, depth)) {
+          group = [object];
+        } else {
+          objects.push(object);
+        }
+      });
+      if (group) {
+        objects.push(new this(group, {
+          depth,
+          asTree
+        }));
+      }
+      return objects;
+    }
+    constructor() {
+      let objects = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      let {
+        depth,
+        asTree
+      } = arguments.length > 1 ? arguments[1] : undefined;
+      this.objects = objects;
+      if (asTree) {
+        this.depth = depth;
+        this.objects = this.constructor.groupObjects(this.objects, {
+          asTree,
+          depth: this.depth + 1
+        });
+      }
+    }
+    getObjects() {
+      return this.objects;
+    }
+    getDepth() {
+      return this.depth;
+    }
+    getCacheKey() {
+      const keys = ["objectGroup"];
+      Array.from(this.getObjects()).forEach(object => {
+        keys.push(object.getCacheKey());
+      });
+      return keys.join("/");
+    }
+  }
+
+  class ObjectMap extends BasicObject {
+    constructor() {
+      let objects = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      super(...arguments);
+      this.objects = {};
+      Array.from(objects).forEach(object => {
+        const hash = JSON.stringify(object);
+        if (this.objects[hash] == null) {
+          this.objects[hash] = object;
+        }
+      });
+    }
+    find(object) {
+      const hash = JSON.stringify(object);
+      return this.objects[hash];
+    }
+  }
+
+  class ElementStore {
+    constructor(elements) {
+      this.reset(elements);
+    }
+    add(element) {
+      const key = getKey(element);
+      this.elements[key] = element;
+    }
+    remove(element) {
+      const key = getKey(element);
+      const value = this.elements[key];
+      if (value) {
+        delete this.elements[key];
+        return value;
+      }
+    }
+    reset() {
+      let elements = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      this.elements = {};
+      Array.from(elements).forEach(element => {
+        this.add(element);
+      });
+      return elements;
+    }
+  }
+  const getKey = element => element.dataset.trixStoreKey;
+
+  class Operation extends BasicObject {
+    isPerforming() {
+      return this.performing === true;
+    }
+    hasPerformed() {
+      return this.performed === true;
+    }
+    hasSucceeded() {
+      return this.performed && this.succeeded;
+    }
+    hasFailed() {
+      return this.performed && !this.succeeded;
+    }
+    getPromise() {
+      if (!this.promise) {
+        this.promise = new Promise((resolve, reject) => {
+          this.performing = true;
+          return this.perform((succeeded, result) => {
+            this.succeeded = succeeded;
+            this.performing = false;
+            this.performed = true;
+            if (this.succeeded) {
+              resolve(result);
+            } else {
+              reject(result);
+            }
+          });
+        });
+      }
+      return this.promise;
+    }
+    perform(callback) {
+      return callback(false);
+    }
+    release() {
+      var _this$promise, _this$promise$cancel;
+      (_this$promise = this.promise) === null || _this$promise === void 0 || (_this$promise$cancel = _this$promise.cancel) === null || _this$promise$cancel === void 0 || _this$promise$cancel.call(_this$promise);
+      this.promise = null;
+      this.performing = null;
+      this.performed = null;
+      this.succeeded = null;
+    }
+  }
+  Operation.proxyMethod("getPromise().then");
+  Operation.proxyMethod("getPromise().catch");
+
+  class ObjectView extends BasicObject {
+    constructor(object) {
+      let options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      super(...arguments);
+      this.object = object;
+      this.options = options;
+      this.childViews = [];
+      this.rootView = this;
+    }
+    getNodes() {
+      if (!this.nodes) {
+        this.nodes = this.createNodes();
+      }
+      return this.nodes.map(node => node.cloneNode(true));
+    }
+    invalidate() {
+      var _this$parentView;
+      this.nodes = null;
+      this.childViews = [];
+      return (_this$parentView = this.parentView) === null || _this$parentView === void 0 ? void 0 : _this$parentView.invalidate();
+    }
+    invalidateViewForObject(object) {
+      var _this$findViewForObje;
+      return (_this$findViewForObje = this.findViewForObject(object)) === null || _this$findViewForObje === void 0 ? void 0 : _this$findViewForObje.invalidate();
+    }
+    findOrCreateCachedChildView(viewClass, object, options) {
+      let view = this.getCachedViewForObject(object);
+      if (view) {
+        this.recordChildView(view);
+      } else {
+        view = this.createChildView(...arguments);
+        this.cacheViewForObject(view, object);
+      }
+      return view;
+    }
+    createChildView(viewClass, object) {
+      let options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+      if (object instanceof ObjectGroup) {
+        options.viewClass = viewClass;
+        viewClass = ObjectGroupView;
+      }
+      const view = new viewClass(object, options);
+      return this.recordChildView(view);
+    }
+    recordChildView(view) {
+      view.parentView = this;
+      view.rootView = this.rootView;
+      this.childViews.push(view);
+      return view;
+    }
+    getAllChildViews() {
+      let views = [];
+      this.childViews.forEach(childView => {
+        views.push(childView);
+        views = views.concat(childView.getAllChildViews());
+      });
+      return views;
+    }
+    findElement() {
+      return this.findElementForObject(this.object);
+    }
+    findElementForObject(object) {
+      const id = object === null || object === void 0 ? void 0 : object.id;
+      if (id) {
+        return this.rootView.element.querySelector("[data-trix-id='".concat(id, "']"));
+      }
+    }
+    findViewForObject(object) {
+      for (const view of this.getAllChildViews()) {
+        if (view.object === object) {
+          return view;
+        }
+      }
+    }
+    getViewCache() {
+      if (this.rootView === this) {
+        if (this.isViewCachingEnabled()) {
+          if (!this.viewCache) {
+            this.viewCache = {};
+          }
+          return this.viewCache;
+        }
+      } else {
+        return this.rootView.getViewCache();
+      }
+    }
+    isViewCachingEnabled() {
+      return this.shouldCacheViews !== false;
+    }
+    enableViewCaching() {
+      this.shouldCacheViews = true;
+    }
+    disableViewCaching() {
+      this.shouldCacheViews = false;
+    }
+    getCachedViewForObject(object) {
+      var _this$getViewCache;
+      return (_this$getViewCache = this.getViewCache()) === null || _this$getViewCache === void 0 ? void 0 : _this$getViewCache[object.getCacheKey()];
+    }
+    cacheViewForObject(view, object) {
+      const cache = this.getViewCache();
+      if (cache) {
+        cache[object.getCacheKey()] = view;
+      }
+    }
+    garbageCollectCachedViews() {
+      const cache = this.getViewCache();
+      if (cache) {
+        const views = this.getAllChildViews().concat(this);
+        const objectKeys = views.map(view => view.object.getCacheKey());
+        for (const key in cache) {
+          if (!objectKeys.includes(key)) {
+            delete cache[key];
+          }
+        }
+      }
+    }
+  }
+  class ObjectGroupView extends ObjectView {
+    constructor() {
+      super(...arguments);
+      this.objectGroup = this.object;
+      this.viewClass = this.options.viewClass;
+      delete this.options.viewClass;
+    }
+    getChildViews() {
+      if (!this.childViews.length) {
+        Array.from(this.objectGroup.getObjects()).forEach(object => {
+          this.findOrCreateCachedChildView(this.viewClass, object, this.options);
+        });
+      }
+      return this.childViews;
+    }
+    createNodes() {
+      const element = this.createContainerElement();
+      this.getChildViews().forEach(view => {
+        Array.from(view.getNodes()).forEach(node => {
+          element.appendChild(node);
+        });
+      });
+      return [element];
+    }
+    createContainerElement() {
+      let depth = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.objectGroup.getDepth();
+      return this.getChildViews()[0].createContainerElement(depth);
+    }
+  }
+
+  /*! @license DOMPurify 3.2.3 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.3/LICENSE */
+
+  const {
+    entries,
+    setPrototypeOf,
+    isFrozen,
+    getPrototypeOf,
+    getOwnPropertyDescriptor
+  } = Object;
+  let {
+    freeze,
+    seal,
+    create
+  } = Object; // eslint-disable-line import/no-mutable-exports
+  let {
+    apply,
+    construct
+  } = typeof Reflect !== 'undefined' && Reflect;
+  if (!freeze) {
+    freeze = function freeze(x) {
+      return x;
+    };
+  }
+  if (!seal) {
+    seal = function seal(x) {
+      return x;
+    };
+  }
+  if (!apply) {
+    apply = function apply(fun, thisValue, args) {
+      return fun.apply(thisValue, args);
+    };
+  }
+  if (!construct) {
+    construct = function construct(Func, args) {
+      return new Func(...args);
+    };
+  }
+  const arrayForEach = unapply(Array.prototype.forEach);
+  const arrayPop = unapply(Array.prototype.pop);
+  const arrayPush = unapply(Array.prototype.push);
+  const stringToLowerCase = unapply(String.prototype.toLowerCase);
+  const stringToString = unapply(String.prototype.toString);
+  const stringMatch = unapply(String.prototype.match);
+  const stringReplace = unapply(String.prototype.replace);
+  const stringIndexOf = unapply(String.prototype.indexOf);
+  const stringTrim = unapply(String.prototype.trim);
+  const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);
+  const regExpTest = unapply(RegExp.prototype.test);
+  const typeErrorCreate = unconstruct(TypeError);
+  /**
+   * Creates a new function that calls the given function with a specified thisArg and arguments.
+   *
+   * @param func - The function to be wrapped and called.
+   * @returns A new function that calls the given function with a specified thisArg and arguments.
+   */
+  function unapply(func) {
+    return function (thisArg) {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+      return apply(func, thisArg, args);
+    };
+  }
+  /**
+   * Creates a new function that constructs an instance of the given constructor function with the provided arguments.
+   *
+   * @param func - The constructor function to be wrapped and called.
+   * @returns A new function that constructs an instance of the given constructor function with the provided arguments.
+   */
+  function unconstruct(func) {
+    return function () {
+      for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+        args[_key2] = arguments[_key2];
+      }
+      return construct(func, args);
+    };
+  }
+  /**
+   * Add properties to a lookup table
+   *
+   * @param set - The set to which elements will be added.
+   * @param array - The array containing elements to be added to the set.
+   * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.
+   * @returns The modified set with added elements.
+   */
+  function addToSet(set, array) {
+    let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase;
+    if (setPrototypeOf) {
+      // Make 'in' and truthy checks like Boolean(set.constructor)
+      // independent of any properties defined on Object.prototype.
+      // Prevent prototype setters from intercepting set as a this value.
+      setPrototypeOf(set, null);
+    }
+    let l = array.length;
+    while (l--) {
+      let element = array[l];
+      if (typeof element === 'string') {
+        const lcElement = transformCaseFunc(element);
+        if (lcElement !== element) {
+          // Config presets (e.g. tags.js, attrs.js) are immutable.
+          if (!isFrozen(array)) {
+            array[l] = lcElement;
+          }
+          element = lcElement;
+        }
+      }
+      set[element] = true;
+    }
+    return set;
+  }
+  /**
+   * Clean up an array to harden against CSPP
+   *
+   * @param array - The array to be cleaned.
+   * @returns The cleaned version of the array
+   */
+  function cleanArray(array) {
+    for (let index = 0; index < array.length; index++) {
+      const isPropertyExist = objectHasOwnProperty(array, index);
+      if (!isPropertyExist) {
+        array[index] = null;
+      }
+    }
+    return array;
+  }
+  /**
+   * Shallow clone an object
+   *
+   * @param object - The object to be cloned.
+   * @returns A new object that copies the original.
+   */
+  function clone(object) {
+    const newObject = create(null);
+    for (const [property, value] of entries(object)) {
+      const isPropertyExist = objectHasOwnProperty(object, property);
+      if (isPropertyExist) {
+        if (Array.isArray(value)) {
+          newObject[property] = cleanArray(value);
+        } else if (value && typeof value === 'object' && value.constructor === Object) {
+          newObject[property] = clone(value);
+        } else {
+          newObject[property] = value;
+        }
+      }
+    }
+    return newObject;
+  }
+  /**
+   * This method automatically checks if the prop is function or getter and behaves accordingly.
+   *
+   * @param object - The object to look up the getter function in its prototype chain.
+   * @param prop - The property name for which to find the getter function.
+   * @returns The getter function found in the prototype chain or a fallback function.
+   */
+  function lookupGetter(object, prop) {
+    while (object !== null) {
+      const desc = getOwnPropertyDescriptor(object, prop);
+      if (desc) {
+        if (desc.get) {
+          return unapply(desc.get);
+        }
+        if (typeof desc.value === 'function') {
+          return unapply(desc.value);
+        }
+      }
+      object = getPrototypeOf(object);
+    }
+    function fallbackValue() {
+      return null;
+    }
+    return fallbackValue;
+  }
+  const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']);
+  const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);
+  const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']);
+  // List of SVG elements that are disallowed by default.
+  // We still need to know them so that we can do namespace
+  // checks properly in case one wants to add them to
+  // allow-list.
+  const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']);
+  const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']);
+  // Similarly to SVG, we want to know all MathML elements,
+  // even those that we disallow by default.
+  const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
+  const text = freeze(['#text']);
+  const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']);
+  const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'exponent', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'intercept', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'slope', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);
+  const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);
+  const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
+
+  // eslint-disable-next-line unicorn/better-regex
+  const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
+  const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);
+  const TMPLIT_EXPR = seal(/\$\{[\w\W]*}/gm); // eslint-disable-line unicorn/better-regex
+  const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape
+  const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
+  const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
+  );
+
+  const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
+  const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
+  );
+
+  const DOCTYPE_NAME = seal(/^html$/i);
+  const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i);
+  var EXPRESSIONS = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    ARIA_ATTR: ARIA_ATTR,
+    ATTR_WHITESPACE: ATTR_WHITESPACE,
+    CUSTOM_ELEMENT: CUSTOM_ELEMENT,
+    DATA_ATTR: DATA_ATTR,
+    DOCTYPE_NAME: DOCTYPE_NAME,
+    ERB_EXPR: ERB_EXPR,
+    IS_ALLOWED_URI: IS_ALLOWED_URI,
+    IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,
+    MUSTACHE_EXPR: MUSTACHE_EXPR,
+    TMPLIT_EXPR: TMPLIT_EXPR
+  });
+
+  /* eslint-disable @typescript-eslint/indent */
+  // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
+  const NODE_TYPE = {
+    element: 1,
+    attribute: 2,
+    text: 3,
+    cdataSection: 4,
+    entityReference: 5,
+    // Deprecated
+    entityNode: 6,
+    // Deprecated
+    progressingInstruction: 7,
+    comment: 8,
+    document: 9,
+    documentType: 10,
+    documentFragment: 11,
+    notation: 12 // Deprecated
+  };
+
+  const getGlobal = function getGlobal() {
+    return typeof window === 'undefined' ? null : window;
+  };
+  /**
+   * Creates a no-op policy for internal use only.
+   * Don't export this function outside this module!
+   * @param trustedTypes The policy factory.
+   * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
+   * @return The policy created (or null, if Trusted Types
+   * are not supported or creating the policy failed).
+   */
+  const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
+    if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
+      return null;
+    }
+    // Allow the callers to control the unique policy name
+    // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
+    // Policy creation with duplicate names throws in Trusted Types.
+    let suffix = null;
+    const ATTR_NAME = 'data-tt-policy-suffix';
+    if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
+      suffix = purifyHostElement.getAttribute(ATTR_NAME);
+    }
+    const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
+    try {
+      return trustedTypes.createPolicy(policyName, {
+        createHTML(html) {
+          return html;
+        },
+        createScriptURL(scriptUrl) {
+          return scriptUrl;
+        }
+      });
+    } catch (_) {
+      // Policy creation failed (most likely another DOMPurify script has
+      // already run). Skip creating the policy, as this will only cause errors
+      // if TT are enforced.
+      console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
+      return null;
+    }
+  };
+  const _createHooksMap = function _createHooksMap() {
+    return {
+      afterSanitizeAttributes: [],
+      afterSanitizeElements: [],
+      afterSanitizeShadowDOM: [],
+      beforeSanitizeAttributes: [],
+      beforeSanitizeElements: [],
+      beforeSanitizeShadowDOM: [],
+      uponSanitizeAttribute: [],
+      uponSanitizeElement: [],
+      uponSanitizeShadowNode: []
+    };
+  };
+  function createDOMPurify() {
+    let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
+    const DOMPurify = root => createDOMPurify(root);
+    DOMPurify.version = '3.2.3';
+    DOMPurify.removed = [];
+    if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) {
+      // Not running in a browser, provide a factory function
+      // so that you can pass your own Window
+      DOMPurify.isSupported = false;
+      return DOMPurify;
+    }
+    let {
+      document
+    } = window;
+    const originalDocument = document;
+    const currentScript = originalDocument.currentScript;
+    const {
+      DocumentFragment,
+      HTMLTemplateElement,
+      Node,
+      Element,
+      NodeFilter,
+      NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,
+      HTMLFormElement,
+      DOMParser,
+      trustedTypes
+    } = window;
+    const ElementPrototype = Element.prototype;
+    const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
+    const remove = lookupGetter(ElementPrototype, 'remove');
+    const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
+    const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
+    const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
+    // As per issue #47, the web-components registry is inherited by a
+    // new document created via createHTMLDocument. As per the spec
+    // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
+    // a new empty registry is used when creating a template contents owner
+    // document, so we use that as our parent document to ensure nothing
+    // is inherited.
+    if (typeof HTMLTemplateElement === 'function') {
+      const template = document.createElement('template');
+      if (template.content && template.content.ownerDocument) {
+        document = template.content.ownerDocument;
+      }
+    }
+    let trustedTypesPolicy;
+    let emptyHTML = '';
+    const {
+      implementation,
+      createNodeIterator,
+      createDocumentFragment,
+      getElementsByTagName
+    } = document;
+    const {
+      importNode
+    } = originalDocument;
+    let hooks = _createHooksMap();
+    /**
+     * Expose whether this browser supports running the full DOMPurify.
+     */
+    DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
+    const {
+      MUSTACHE_EXPR,
+      ERB_EXPR,
+      TMPLIT_EXPR,
+      DATA_ATTR,
+      ARIA_ATTR,
+      IS_SCRIPT_OR_DATA,
+      ATTR_WHITESPACE,
+      CUSTOM_ELEMENT
+    } = EXPRESSIONS;
+    let {
+      IS_ALLOWED_URI: IS_ALLOWED_URI$1
+    } = EXPRESSIONS;
+    /**
+     * We consider the elements and attributes below to be safe. Ideally
+     * don't add any new ones but feel free to remove unwanted ones.
+     */
+    /* allowed element names */
+    let ALLOWED_TAGS = null;
+    const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
+    /* Allowed attribute names */
+    let ALLOWED_ATTR = null;
+    const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
+    /*
+     * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.
+     * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
+     * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
+     * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
+     */
+    let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, {
+      tagNameCheck: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: null
+      },
+      attributeNameCheck: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: null
+      },
+      allowCustomizedBuiltInElements: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: false
+      }
+    }));
+    /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
+    let FORBID_TAGS = null;
+    /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
+    let FORBID_ATTR = null;
+    /* Decide if ARIA attributes are okay */
+    let ALLOW_ARIA_ATTR = true;
+    /* Decide if custom data attributes are okay */
+    let ALLOW_DATA_ATTR = true;
+    /* Decide if unknown protocols are okay */
+    let ALLOW_UNKNOWN_PROTOCOLS = false;
+    /* Decide if self-closing tags in attributes are allowed.
+     * Usually removed due to a mXSS issue in jQuery 3.0 */
+    let ALLOW_SELF_CLOSE_IN_ATTR = true;
+    /* Output should be safe for common template engines.
+     * This means, DOMPurify removes data attributes, mustaches and ERB
+     */
+    let SAFE_FOR_TEMPLATES = false;
+    /* Output should be safe even for XML used within HTML and alike.
+     * This means, DOMPurify removes comments when containing risky content.
+     */
+    let SAFE_FOR_XML = true;
+    /* Decide if document with <html>... should be returned */
+    let WHOLE_DOCUMENT = false;
+    /* Track whether config is already set on this instance of DOMPurify. */
+    let SET_CONFIG = false;
+    /* Decide if all elements (e.g. style, script) must be children of
+     * document.body. By default, browsers might move them to document.head */
+    let FORCE_BODY = false;
+    /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
+     * string (or a TrustedHTML object if Trusted Types are supported).
+     * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
+     */
+    let RETURN_DOM = false;
+    /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
+     * string  (or a TrustedHTML object if Trusted Types are supported) */
+    let RETURN_DOM_FRAGMENT = false;
+    /* Try to return a Trusted Type object instead of a string, return a string in
+     * case Trusted Types are not supported  */
+    let RETURN_TRUSTED_TYPE = false;
+    /* Output should be free from DOM clobbering attacks?
+     * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
+     */
+    let SANITIZE_DOM = true;
+    /* Achieve full DOM Clobbering protection by isolating the namespace of named
+     * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
+     *
+     * HTML/DOM spec rules that enable DOM Clobbering:
+     *   - Named Access on Window (§7.3.3)
+     *   - DOM Tree Accessors (§3.1.5)
+     *   - Form Element Parent-Child Relations (§4.10.3)
+     *   - Iframe srcdoc / Nested WindowProxies (§4.8.5)
+     *   - HTMLCollection (§4.2.10.2)
+     *
+     * Namespace isolation is implemented by prefixing `id` and `name` attributes
+     * with a constant string, i.e., `user-content-`
+     */
+    let SANITIZE_NAMED_PROPS = false;
+    const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
+    /* Keep element content when removing element? */
+    let KEEP_CONTENT = true;
+    /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
+     * of importing it into a new Document and returning a sanitized copy */
+    let IN_PLACE = false;
+    /* Allow usage of profiles like html, svg and mathMl */
+    let USE_PROFILES = {};
+    /* Tags to ignore content of when KEEP_CONTENT is true */
+    let FORBID_CONTENTS = null;
+    const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);
+    /* Tags that are safe for data: URIs */
+    let DATA_URI_TAGS = null;
+    const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
+    /* Attributes safe for values like "javascript:" */
+    let URI_SAFE_ATTRIBUTES = null;
+    const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
+    const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+    const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+    const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+    /* Document namespace */
+    let NAMESPACE = HTML_NAMESPACE;
+    let IS_EMPTY_INPUT = false;
+    /* Allowed XHTML+XML namespaces */
+    let ALLOWED_NAMESPACES = null;
+    const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
+    let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
+    let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);
+    // Certain elements are allowed in both SVG and HTML
+    // namespace. We need to specify them explicitly
+    // so that they don't get erroneously deleted from
+    // HTML namespace.
+    const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
+    /* Parsing of strict XHTML documents */
+    let PARSER_MEDIA_TYPE = null;
+    const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
+    const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
+    let transformCaseFunc = null;
+    /* Keep a reference to config to pass to hooks */
+    let CONFIG = null;
+    /* Ideally, do not touch anything below this line */
+    /* ______________________________________________ */
+    const formElement = document.createElement('form');
+    const isRegexOrFunction = function isRegexOrFunction(testValue) {
+      return testValue instanceof RegExp || testValue instanceof Function;
+    };
+    /**
+     * _parseConfig
+     *
+     * @param cfg optional config literal
+     */
+    // eslint-disable-next-line complexity
+    const _parseConfig = function _parseConfig() {
+      let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      if (CONFIG && CONFIG === cfg) {
+        return;
+      }
+      /* Shield configuration object from tampering */
+      if (!cfg || typeof cfg !== 'object') {
+        cfg = {};
+      }
+      /* Shield configuration object from prototype pollution */
+      cfg = clone(cfg);
+      PARSER_MEDIA_TYPE =
+      // eslint-disable-next-line unicorn/prefer-includes
+      SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE;
+      // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
+      transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
+      /* Set configuration parameters */
+      ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
+      ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
+      ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
+      URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES;
+      DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS;
+      FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
+      FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {};
+      FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {};
+      USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false;
+      ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
+      ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
+      ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
+      ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
+      SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
+      SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true
+      WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
+      RETURN_DOM = cfg.RETURN_DOM || false; // Default false
+      RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
+      RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
+      FORCE_BODY = cfg.FORCE_BODY || false; // Default false
+      SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
+      SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
+      KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
+      IN_PLACE = cfg.IN_PLACE || false; // Default false
+      IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;
+      NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;
+      MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS;
+      HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS;
+      CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};
+      if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {
+        CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;
+      }
+      if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {
+        CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;
+      }
+      if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {
+        CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;
+      }
+      if (SAFE_FOR_TEMPLATES) {
+        ALLOW_DATA_ATTR = false;
+      }
+      if (RETURN_DOM_FRAGMENT) {
+        RETURN_DOM = true;
+      }
+      /* Parse profile info */
+      if (USE_PROFILES) {
+        ALLOWED_TAGS = addToSet({}, text);
+        ALLOWED_ATTR = [];
+        if (USE_PROFILES.html === true) {
+          addToSet(ALLOWED_TAGS, html$1);
+          addToSet(ALLOWED_ATTR, html);
+        }
+        if (USE_PROFILES.svg === true) {
+          addToSet(ALLOWED_TAGS, svg$1);
+          addToSet(ALLOWED_ATTR, svg);
+          addToSet(ALLOWED_ATTR, xml);
+        }
+        if (USE_PROFILES.svgFilters === true) {
+          addToSet(ALLOWED_TAGS, svgFilters);
+          addToSet(ALLOWED_ATTR, svg);
+          addToSet(ALLOWED_ATTR, xml);
+        }
+        if (USE_PROFILES.mathMl === true) {
+          addToSet(ALLOWED_TAGS, mathMl$1);
+          addToSet(ALLOWED_ATTR, mathMl);
+          addToSet(ALLOWED_ATTR, xml);
+        }
+      }
+      /* Merge configuration parameters */
+      if (cfg.ADD_TAGS) {
+        if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
+          ALLOWED_TAGS = clone(ALLOWED_TAGS);
+        }
+        addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
+      }
+      if (cfg.ADD_ATTR) {
+        if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
+          ALLOWED_ATTR = clone(ALLOWED_ATTR);
+        }
+        addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
+      }
+      if (cfg.ADD_URI_SAFE_ATTR) {
+        addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
+      }
+      if (cfg.FORBID_CONTENTS) {
+        if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
+          FORBID_CONTENTS = clone(FORBID_CONTENTS);
+        }
+        addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
+      }
+      /* Add #text in case KEEP_CONTENT is set to true */
+      if (KEEP_CONTENT) {
+        ALLOWED_TAGS['#text'] = true;
+      }
+      /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
+      if (WHOLE_DOCUMENT) {
+        addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
+      }
+      /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
+      if (ALLOWED_TAGS.table) {
+        addToSet(ALLOWED_TAGS, ['tbody']);
+        delete FORBID_TAGS.tbody;
+      }
+      if (cfg.TRUSTED_TYPES_POLICY) {
+        if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
+          throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
+        }
+        if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
+          throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
+        }
+        // Overwrite existing TrustedTypes policy.
+        trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;
+        // Sign local variables required by `sanitize`.
+        emptyHTML = trustedTypesPolicy.createHTML('');
+      } else {
+        // Uninitialized policy, attempt to initialize the internal dompurify policy.
+        if (trustedTypesPolicy === undefined) {
+          trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
+        }
+        // If creating the internal policy succeeded sign internal variables.
+        if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
+          emptyHTML = trustedTypesPolicy.createHTML('');
+        }
+      }
+      // Prevent further manipulation of configuration.
+      // Not available in IE8, Safari 5, etc.
+      if (freeze) {
+        freeze(cfg);
+      }
+      CONFIG = cfg;
+    };
+    /* Keep track of all possible SVG and MathML tags
+     * so that we can perform the namespace checks
+     * correctly. */
+    const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]);
+    const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]);
+    /**
+     * @param element a DOM element whose namespace is being checked
+     * @returns Return false if the element has a
+     *  namespace that a spec-compliant parser would never
+     *  return. Return true otherwise.
+     */
+    const _checkValidNamespace = function _checkValidNamespace(element) {
+      let parent = getParentNode(element);
+      // In JSDOM, if we're inside shadow DOM, then parentNode
+      // can be null. We just simulate parent in this case.
+      if (!parent || !parent.tagName) {
+        parent = {
+          namespaceURI: NAMESPACE,
+          tagName: 'template'
+        };
+      }
+      const tagName = stringToLowerCase(element.tagName);
+      const parentTagName = stringToLowerCase(parent.tagName);
+      if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
+        return false;
+      }
+      if (element.namespaceURI === SVG_NAMESPACE) {
+        // The only way to switch from HTML namespace to SVG
+        // is via <svg>. If it happens via any other tag, then
+        // it should be killed.
+        if (parent.namespaceURI === HTML_NAMESPACE) {
+          return tagName === 'svg';
+        }
+        // The only way to switch from MathML to SVG is via`
+        // svg if parent is either <annotation-xml> or MathML
+        // text integration points.
+        if (parent.namespaceURI === MATHML_NAMESPACE) {
+          return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
+        }
+        // We only allow elements that are defined in SVG
+        // spec. All others are disallowed in SVG namespace.
+        return Boolean(ALL_SVG_TAGS[tagName]);
+      }
+      if (element.namespaceURI === MATHML_NAMESPACE) {
+        // The only way to switch from HTML namespace to MathML
+        // is via <math>. If it happens via any other tag, then
+        // it should be killed.
+        if (parent.namespaceURI === HTML_NAMESPACE) {
+          return tagName === 'math';
+        }
+        // The only way to switch from SVG to MathML is via
+        // <math> and HTML integration points
+        if (parent.namespaceURI === SVG_NAMESPACE) {
+          return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
+        }
+        // We only allow elements that are defined in MathML
+        // spec. All others are disallowed in MathML namespace.
+        return Boolean(ALL_MATHML_TAGS[tagName]);
+      }
+      if (element.namespaceURI === HTML_NAMESPACE) {
+        // The only way to switch from SVG to HTML is via
+        // HTML integration points, and from MathML to HTML
+        // is via MathML text integration points
+        if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
+          return false;
+        }
+        if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
+          return false;
+        }
+        // We disallow tags that are specific for MathML
+        // or SVG and should never appear in HTML namespace
+        return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
+      }
+      // For XHTML and XML documents that support custom namespaces
+      if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
+        return true;
+      }
+      // The code should never reach this place (this means
+      // that the element somehow got namespace that is not
+      // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
+      // Return false just in case.
+      return false;
+    };
+    /**
+     * _forceRemove
+     *
+     * @param node a DOM node
+     */
+    const _forceRemove = function _forceRemove(node) {
+      arrayPush(DOMPurify.removed, {
+        element: node
+      });
+      try {
+        // eslint-disable-next-line unicorn/prefer-dom-node-remove
+        getParentNode(node).removeChild(node);
+      } catch (_) {
+        remove(node);
+      }
+    };
+    /**
+     * _removeAttribute
+     *
+     * @param name an Attribute name
+     * @param element a DOM node
+     */
+    const _removeAttribute = function _removeAttribute(name, element) {
+      try {
+        arrayPush(DOMPurify.removed, {
+          attribute: element.getAttributeNode(name),
+          from: element
+        });
+      } catch (_) {
+        arrayPush(DOMPurify.removed, {
+          attribute: null,
+          from: element
+        });
+      }
+      element.removeAttribute(name);
+      // We void attribute values for unremovable "is" attributes
+      if (name === 'is') {
+        if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
+          try {
+            _forceRemove(element);
+          } catch (_) {}
+        } else {
+          try {
+            element.setAttribute(name, '');
+          } catch (_) {}
+        }
+      }
+    };
+    /**
+     * _initDocument
+     *
+     * @param dirty - a string of dirty markup
+     * @return a DOM, filled with the dirty markup
+     */
+    const _initDocument = function _initDocument(dirty) {
+      /* Create a HTML document */
+      let doc = null;
+      let leadingWhitespace = null;
+      if (FORCE_BODY) {
+        dirty = '<remove></remove>' + dirty;
+      } else {
+        /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
+        const matches = stringMatch(dirty, /^[\r\n\t ]+/);
+        leadingWhitespace = matches && matches[0];
+      }
+      if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
+        // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
+        dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
+      }
+      const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
+      /*
+       * Use the DOMParser API by default, fallback later if needs be
+       * DOMParser not work for svg when has multiple root element.
+       */
+      if (NAMESPACE === HTML_NAMESPACE) {
+        try {
+          doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
+        } catch (_) {}
+      }
+      /* Use createHTMLDocument in case DOMParser is not available */
+      if (!doc || !doc.documentElement) {
+        doc = implementation.createDocument(NAMESPACE, 'template', null);
+        try {
+          doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
+        } catch (_) {
+          // Syntax error if dirtyPayload is invalid xml
+        }
+      }
+      const body = doc.body || doc.documentElement;
+      if (dirty && leadingWhitespace) {
+        body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
+      }
+      /* Work on whole document or just its body */
+      if (NAMESPACE === HTML_NAMESPACE) {
+        return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
+      }
+      return WHOLE_DOCUMENT ? doc.documentElement : body;
+    };
+    /**
+     * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.
+     *
+     * @param root The root element or node to start traversing on.
+     * @return The created NodeIterator
+     */
+    const _createNodeIterator = function _createNodeIterator(root) {
+      return createNodeIterator.call(root.ownerDocument || root, root,
+      // eslint-disable-next-line no-bitwise
+      NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null);
+    };
+    /**
+     * _isClobbered
+     *
+     * @param element element to check for clobbering attacks
+     * @return true if clobbered, false if safe
+     */
+    const _isClobbered = function _isClobbered(element) {
+      return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function');
+    };
+    /**
+     * Checks whether the given object is a DOM node.
+     *
+     * @param value object to check whether it's a DOM node
+     * @return true is object is a DOM node
+     */
+    const _isNode = function _isNode(value) {
+      return typeof Node === 'function' && value instanceof Node;
+    };
+    function _executeHooks(hooks, currentNode, data) {
+      arrayForEach(hooks, hook => {
+        hook.call(DOMPurify, currentNode, data, CONFIG);
+      });
+    }
+    /**
+     * _sanitizeElements
+     *
+     * @protect nodeName
+     * @protect textContent
+     * @protect removeChild
+     * @param currentNode to check for permission to exist
+     * @return true if node was killed, false if left alive
+     */
+    const _sanitizeElements = function _sanitizeElements(currentNode) {
+      let content = null;
+      /* Execute a hook if present */
+      _executeHooks(hooks.beforeSanitizeElements, currentNode, null);
+      /* Check if element is clobbered or can clobber */
+      if (_isClobbered(currentNode)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Now let's check the element's type and name */
+      const tagName = transformCaseFunc(currentNode.nodeName);
+      /* Execute a hook if present */
+      _executeHooks(hooks.uponSanitizeElement, currentNode, {
+        tagName,
+        allowedTags: ALLOWED_TAGS
+      });
+      /* Detect mXSS attempts abusing namespace confusion */
+      if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Remove any occurrence of processing instructions */
+      if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Remove any kind of possibly harmful comments */
+      if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Remove element if anything forbids its presence */
+      if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+        /* Check if we have a custom element to handle */
+        if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {
+          if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) {
+            return false;
+          }
+          if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) {
+            return false;
+          }
+        }
+        /* Keep content except for bad-listed elements */
+        if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
+          const parentNode = getParentNode(currentNode) || currentNode.parentNode;
+          const childNodes = getChildNodes(currentNode) || currentNode.childNodes;
+          if (childNodes && parentNode) {
+            const childCount = childNodes.length;
+            for (let i = childCount - 1; i >= 0; --i) {
+              const childClone = cloneNode(childNodes[i], true);
+              childClone.__removalCount = (currentNode.__removalCount || 0) + 1;
+              parentNode.insertBefore(childClone, getNextSibling(currentNode));
+            }
+          }
+        }
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Check whether element has a valid namespace */
+      if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Make sure that older browsers don't get fallback-tag mXSS */
+      if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Sanitize element content to be template-safe */
+      if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {
+        /* Get the element's text content */
+        content = currentNode.textContent;
+        arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
+          content = stringReplace(content, expr, ' ');
+        });
+        if (currentNode.textContent !== content) {
+          arrayPush(DOMPurify.removed, {
+            element: currentNode.cloneNode()
+          });
+          currentNode.textContent = content;
+        }
+      }
+      /* Execute a hook if present */
+      _executeHooks(hooks.afterSanitizeElements, currentNode, null);
+      return false;
+    };
+    /**
+     * _isValidAttribute
+     *
+     * @param lcTag Lowercase tag name of containing element.
+     * @param lcName Lowercase attribute name.
+     * @param value Attribute value.
+     * @return Returns true if `value` is valid, otherwise false.
+     */
+    // eslint-disable-next-line complexity
+    const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
+      /* Make sure attribute cannot clobber */
+      if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
+        return false;
+      }
+      /* Allow valid data-* attributes: At least one character after "-"
+          (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
+          XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
+          We don't need to check the value; it's always URI safe. */
+      if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ;else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ;else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {
+        if (
+        // First condition does a very basic check if a) it's basically a valid custom element tagname AND
+        // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+        // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
+        _isBasicCustomElement(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) ||
+        // Alternative, second condition checks if it's an `is`-attribute, AND
+        // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+        lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ;else {
+          return false;
+        }
+        /* Check value is safe. First, is attr inert? If so, is safe */
+      } else if (URI_SAFE_ATTRIBUTES[lcName]) ;else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ;else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ;else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ;else if (value) {
+        return false;
+      } else ;
+      return true;
+    };
+    /**
+     * _isBasicCustomElement
+     * checks if at least one dash is included in tagName, and it's not the first char
+     * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
+     *
+     * @param tagName name of the tag of the node to sanitize
+     * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false.
+     */
+    const _isBasicCustomElement = function _isBasicCustomElement(tagName) {
+      return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);
+    };
+    /**
+     * _sanitizeAttributes
+     *
+     * @protect attributes
+     * @protect nodeName
+     * @protect removeAttribute
+     * @protect setAttribute
+     *
+     * @param currentNode to sanitize
+     */
+    const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
+      /* Execute a hook if present */
+      _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null);
+      const {
+        attributes
+      } = currentNode;
+      /* Check if we have attributes; if not we might have a text node */
+      if (!attributes || _isClobbered(currentNode)) {
+        return;
+      }
+      const hookEvent = {
+        attrName: '',
+        attrValue: '',
+        keepAttr: true,
+        allowedAttributes: ALLOWED_ATTR,
+        forceKeepAttr: undefined
+      };
+      let l = attributes.length;
+      /* Go backwards over all attributes; safely remove bad ones */
+      while (l--) {
+        const attr = attributes[l];
+        const {
+          name,
+          namespaceURI,
+          value: attrValue
+        } = attr;
+        const lcName = transformCaseFunc(name);
+        let value = name === 'value' ? attrValue : stringTrim(attrValue);
+        /* Execute a hook if present */
+        hookEvent.attrName = lcName;
+        hookEvent.attrValue = value;
+        hookEvent.keepAttr = true;
+        hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
+        _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent);
+        value = hookEvent.attrValue;
+        /* Full DOM Clobbering protection via namespace isolation,
+         * Prefix id and name attributes with `user-content-`
+         */
+        if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {
+          // Remove the attribute with this value
+          _removeAttribute(name, currentNode);
+          // Prefix the value and later re-create the attribute with the sanitized value
+          value = SANITIZE_NAMED_PROPS_PREFIX + value;
+        }
+        /* Work around a security issue with comments inside attributes */
+        if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Did the hooks approve of the attribute? */
+        if (hookEvent.forceKeepAttr) {
+          continue;
+        }
+        /* Remove attribute */
+        _removeAttribute(name, currentNode);
+        /* Did the hooks approve of the attribute? */
+        if (!hookEvent.keepAttr) {
+          continue;
+        }
+        /* Work around a security issue in jQuery 3.0 */
+        if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Sanitize attribute content to be template-safe */
+        if (SAFE_FOR_TEMPLATES) {
+          arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
+            value = stringReplace(value, expr, ' ');
+          });
+        }
+        /* Is `value` valid for this attribute? */
+        const lcTag = transformCaseFunc(currentNode.nodeName);
+        if (!_isValidAttribute(lcTag, lcName, value)) {
+          continue;
+        }
+        /* Handle attributes that require Trusted Types */
+        if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {
+          if (namespaceURI) ;else {
+            switch (trustedTypes.getAttributeType(lcTag, lcName)) {
+              case 'TrustedHTML':
+                {
+                  value = trustedTypesPolicy.createHTML(value);
+                  break;
+                }
+              case 'TrustedScriptURL':
+                {
+                  value = trustedTypesPolicy.createScriptURL(value);
+                  break;
+                }
+            }
+          }
+        }
+        /* Handle invalid data-* attribute set by try-catching it */
+        try {
+          if (namespaceURI) {
+            currentNode.setAttributeNS(namespaceURI, name, value);
+          } else {
+            /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */
+            currentNode.setAttribute(name, value);
+          }
+          if (_isClobbered(currentNode)) {
+            _forceRemove(currentNode);
+          } else {
+            arrayPop(DOMPurify.removed);
+          }
+        } catch (_) {}
+      }
+      /* Execute a hook if present */
+      _executeHooks(hooks.afterSanitizeAttributes, currentNode, null);
+    };
+    /**
+     * _sanitizeShadowDOM
+     *
+     * @param fragment to iterate over recursively
+     */
+    const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
+      let shadowNode = null;
+      const shadowIterator = _createNodeIterator(fragment);
+      /* Execute a hook if present */
+      _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null);
+      while (shadowNode = shadowIterator.nextNode()) {
+        /* Execute a hook if present */
+        _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null);
+        /* Sanitize tags and elements */
+        _sanitizeElements(shadowNode);
+        /* Check attributes next */
+        _sanitizeAttributes(shadowNode);
+        /* Deep shadow DOM detected */
+        if (shadowNode.content instanceof DocumentFragment) {
+          _sanitizeShadowDOM(shadowNode.content);
+        }
+      }
+      /* Execute a hook if present */
+      _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null);
+    };
+    // eslint-disable-next-line complexity
+    DOMPurify.sanitize = function (dirty) {
+      let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let body = null;
+      let importedNode = null;
+      let currentNode = null;
+      let returnNode = null;
+      /* Make sure we have a string to sanitize.
+        DO NOT return early, as this will return the wrong type if
+        the user has requested a DOM object rather than a string */
+      IS_EMPTY_INPUT = !dirty;
+      if (IS_EMPTY_INPUT) {
+        dirty = '<!-->';
+      }
+      /* Stringify, in case dirty is an object */
+      if (typeof dirty !== 'string' && !_isNode(dirty)) {
+        if (typeof dirty.toString === 'function') {
+          dirty = dirty.toString();
+          if (typeof dirty !== 'string') {
+            throw typeErrorCreate('dirty is not a string, aborting');
+          }
+        } else {
+          throw typeErrorCreate('toString is not a function');
+        }
+      }
+      /* Return dirty HTML if DOMPurify cannot run */
+      if (!DOMPurify.isSupported) {
+        return dirty;
+      }
+      /* Assign config vars */
+      if (!SET_CONFIG) {
+        _parseConfig(cfg);
+      }
+      /* Clean up removed elements */
+      DOMPurify.removed = [];
+      /* Check if dirty is correctly typed for IN_PLACE */
+      if (typeof dirty === 'string') {
+        IN_PLACE = false;
+      }
+      if (IN_PLACE) {
+        /* Do some early pre-sanitization to avoid unsafe root nodes */
+        if (dirty.nodeName) {
+          const tagName = transformCaseFunc(dirty.nodeName);
+          if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+            throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
+          }
+        }
+      } else if (dirty instanceof Node) {
+        /* If dirty is a DOM element, append to an empty document to avoid
+           elements being stripped by the parser */
+        body = _initDocument('<!---->');
+        importedNode = body.ownerDocument.importNode(dirty, true);
+        if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') {
+          /* Node is already a body, use as is */
+          body = importedNode;
+        } else if (importedNode.nodeName === 'HTML') {
+          body = importedNode;
+        } else {
+          // eslint-disable-next-line unicorn/prefer-dom-node-append
+          body.appendChild(importedNode);
+        }
+      } else {
+        /* Exit directly if we have nothing to do */
+        if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT &&
+        // eslint-disable-next-line unicorn/prefer-includes
+        dirty.indexOf('<') === -1) {
+          return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;
+        }
+        /* Initialize the document to work on */
+        body = _initDocument(dirty);
+        /* Check we have a DOM node from the data */
+        if (!body) {
+          return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
+        }
+      }
+      /* Remove first element node (ours) if FORCE_BODY is set */
+      if (body && FORCE_BODY) {
+        _forceRemove(body.firstChild);
+      }
+      /* Get node iterator */
+      const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);
+      /* Now start iterating over the created document */
+      while (currentNode = nodeIterator.nextNode()) {
+        /* Sanitize tags and elements */
+        _sanitizeElements(currentNode);
+        /* Check attributes next */
+        _sanitizeAttributes(currentNode);
+        /* Shadow DOM detected, sanitize it */
+        if (currentNode.content instanceof DocumentFragment) {
+          _sanitizeShadowDOM(currentNode.content);
+        }
+      }
+      /* If we sanitized `dirty` in-place, return it. */
+      if (IN_PLACE) {
+        return dirty;
+      }
+      /* Return sanitized string or DOM */
+      if (RETURN_DOM) {
+        if (RETURN_DOM_FRAGMENT) {
+          returnNode = createDocumentFragment.call(body.ownerDocument);
+          while (body.firstChild) {
+            // eslint-disable-next-line unicorn/prefer-dom-node-append
+            returnNode.appendChild(body.firstChild);
+          }
+        } else {
+          returnNode = body;
+        }
+        if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
+          /*
+            AdoptNode() is not used because internal state is not reset
+            (e.g. the past names map of a HTMLFormElement), this is safe
+            in theory but we would rather not risk another attack vector.
+            The state that is cloned by importNode() is explicitly defined
+            by the specs.
+          */
+          returnNode = importNode.call(originalDocument, returnNode, true);
+        }
+        return returnNode;
+      }
+      let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
+      /* Serialize doctype if allowed */
+      if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
+        serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
+      }
+      /* Sanitize final string template-safe */
+      if (SAFE_FOR_TEMPLATES) {
+        arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
+          serializedHTML = stringReplace(serializedHTML, expr, ' ');
+        });
+      }
+      return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
+    };
+    DOMPurify.setConfig = function () {
+      let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      _parseConfig(cfg);
+      SET_CONFIG = true;
+    };
+    DOMPurify.clearConfig = function () {
+      CONFIG = null;
+      SET_CONFIG = false;
+    };
+    DOMPurify.isValidAttribute = function (tag, attr, value) {
+      /* Initialize shared config vars if necessary. */
+      if (!CONFIG) {
+        _parseConfig({});
+      }
+      const lcTag = transformCaseFunc(tag);
+      const lcName = transformCaseFunc(attr);
+      return _isValidAttribute(lcTag, lcName, value);
+    };
+    DOMPurify.addHook = function (entryPoint, hookFunction) {
+      if (typeof hookFunction !== 'function') {
+        return;
+      }
+      arrayPush(hooks[entryPoint], hookFunction);
+    };
+    DOMPurify.removeHook = function (entryPoint) {
+      return arrayPop(hooks[entryPoint]);
+    };
+    DOMPurify.removeHooks = function (entryPoint) {
+      hooks[entryPoint] = [];
+    };
+    DOMPurify.removeAllHooks = function () {
+      hooks = _createHooksMap();
+    };
+    return DOMPurify;
+  }
+  var purify = createDOMPurify();
+
+  const DEFAULT_ALLOWED_ATTRIBUTES = "style href src width height language class".split(" ");
+  const DEFAULT_FORBIDDEN_PROTOCOLS = "javascript:".split(" ");
+  const DEFAULT_FORBIDDEN_ELEMENTS = "script iframe form noscript".split(" ");
+  class HTMLSanitizer extends BasicObject {
+    static setHTML(element, html) {
+      const sanitizedElement = new this(html).sanitize();
+      const sanitizedHtml = sanitizedElement.getHTML ? sanitizedElement.getHTML() : sanitizedElement.outerHTML;
+      element.innerHTML = sanitizedHtml;
+    }
+    static sanitize(html, options) {
+      const sanitizer = new this(html, options);
+      sanitizer.sanitize();
+      return sanitizer;
+    }
+    constructor(html) {
+      let {
+        allowedAttributes,
+        forbiddenProtocols,
+        forbiddenElements
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      super(...arguments);
+      this.allowedAttributes = allowedAttributes || DEFAULT_ALLOWED_ATTRIBUTES;
+      this.forbiddenProtocols = forbiddenProtocols || DEFAULT_FORBIDDEN_PROTOCOLS;
+      this.forbiddenElements = forbiddenElements || DEFAULT_FORBIDDEN_ELEMENTS;
+      this.body = createBodyElementForHTML(html);
+    }
+    sanitize() {
+      this.sanitizeElements();
+      this.normalizeListElementNesting();
+      return purify.sanitize(this.body, {
+        ADD_ATTR: ["language"],
+        RETURN_DOM: true
+      });
+    }
+    getHTML() {
+      return this.body.innerHTML;
+    }
+    getBody() {
+      return this.body;
+    }
+
+    // Private
+
+    sanitizeElements() {
+      const walker = walkTree(this.body);
+      const nodesToRemove = [];
+      while (walker.nextNode()) {
+        const node = walker.currentNode;
+        switch (node.nodeType) {
+          case Node.ELEMENT_NODE:
+            if (this.elementIsRemovable(node)) {
+              nodesToRemove.push(node);
+            } else {
+              this.sanitizeElement(node);
+            }
+            break;
+          case Node.COMMENT_NODE:
+            nodesToRemove.push(node);
+            break;
+        }
+      }
+      nodesToRemove.forEach(node => removeNode(node));
+      return this.body;
+    }
+    sanitizeElement(element) {
+      if (element.hasAttribute("href")) {
+        if (this.forbiddenProtocols.includes(element.protocol)) {
+          element.removeAttribute("href");
+        }
+      }
+      Array.from(element.attributes).forEach(_ref => {
+        let {
+          name
+        } = _ref;
+        if (!this.allowedAttributes.includes(name) && name.indexOf("data-trix") !== 0) {
+          element.removeAttribute(name);
+        }
+      });
+      return element;
+    }
+    normalizeListElementNesting() {
+      Array.from(this.body.querySelectorAll("ul,ol")).forEach(listElement => {
+        const previousElement = listElement.previousElementSibling;
+        if (previousElement) {
+          if (tagName(previousElement) === "li") {
+            previousElement.appendChild(listElement);
+          }
+        }
+      });
+      return this.body;
+    }
+    elementIsRemovable(element) {
+      if ((element === null || element === void 0 ? void 0 : element.nodeType) !== Node.ELEMENT_NODE) return;
+      return this.elementIsForbidden(element) || this.elementIsntSerializable(element);
+    }
+    elementIsForbidden(element) {
+      return this.forbiddenElements.includes(tagName(element));
+    }
+    elementIsntSerializable(element) {
+      return element.getAttribute("data-trix-serialize") === "false" && !nodeIsAttachmentElement(element);
+    }
+  }
+  const createBodyElementForHTML = function () {
+    let html = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "";
+    // Remove everything after </html>
+    html = html.replace(/<\/html[^>]*>[^]*$/i, "</html>");
+    const doc = document.implementation.createHTMLDocument("");
+    doc.documentElement.innerHTML = html;
+    Array.from(doc.head.querySelectorAll("style")).forEach(element => {
+      doc.body.appendChild(element);
+    });
+    return doc.body;
+  };
+
+  const {
+    css: css$2
+  } = config;
+  class AttachmentView extends ObjectView {
+    constructor() {
+      super(...arguments);
+      this.attachment = this.object;
+      this.attachment.uploadProgressDelegate = this;
+      this.attachmentPiece = this.options.piece;
+    }
+    createContentNodes() {
+      return [];
+    }
+    createNodes() {
+      let innerElement;
+      const figure = innerElement = makeElement({
+        tagName: "figure",
+        className: this.getClassName(),
+        data: this.getData(),
+        editable: false
+      });
+      const href = this.getHref();
+      if (href) {
+        innerElement = makeElement({
+          tagName: "a",
+          editable: false,
+          attributes: {
+            href,
+            tabindex: -1
+          }
+        });
+        figure.appendChild(innerElement);
+      }
+      if (this.attachment.hasContent()) {
+        HTMLSanitizer.setHTML(innerElement, this.attachment.getContent());
+      } else {
+        this.createContentNodes().forEach(node => {
+          innerElement.appendChild(node);
+        });
+      }
+      innerElement.appendChild(this.createCaptionElement());
+      if (this.attachment.isPending()) {
+        this.progressElement = makeElement({
+          tagName: "progress",
+          attributes: {
+            class: css$2.attachmentProgress,
+            value: this.attachment.getUploadProgress(),
+            max: 100
+          },
+          data: {
+            trixMutable: true,
+            trixStoreKey: ["progressElement", this.attachment.id].join("/")
+          }
+        });
+        figure.appendChild(this.progressElement);
+      }
+      return [createCursorTarget("left"), figure, createCursorTarget("right")];
+    }
+    createCaptionElement() {
+      const figcaption = makeElement({
+        tagName: "figcaption",
+        className: css$2.attachmentCaption
+      });
+      const caption = this.attachmentPiece.getCaption();
+      if (caption) {
+        figcaption.classList.add("".concat(css$2.attachmentCaption, "--edited"));
+        figcaption.textContent = caption;
+      } else {
+        let name, size;
+        const captionConfig = this.getCaptionConfig();
+        if (captionConfig.name) {
+          name = this.attachment.getFilename();
+        }
+        if (captionConfig.size) {
+          size = this.attachment.getFormattedFilesize();
+        }
+        if (name) {
+          const nameElement = makeElement({
+            tagName: "span",
+            className: css$2.attachmentName,
+            textContent: name
+          });
+          figcaption.appendChild(nameElement);
+        }
+        if (size) {
+          if (name) {
+            figcaption.appendChild(document.createTextNode(" "));
+          }
+          const sizeElement = makeElement({
+            tagName: "span",
+            className: css$2.attachmentSize,
+            textContent: size
+          });
+          figcaption.appendChild(sizeElement);
+        }
+      }
+      return figcaption;
+    }
+    getClassName() {
+      const names = [css$2.attachment, "".concat(css$2.attachment, "--").concat(this.attachment.getType())];
+      const extension = this.attachment.getExtension();
+      if (extension) {
+        names.push("".concat(css$2.attachment, "--").concat(extension));
+      }
+      return names.join(" ");
+    }
+    getData() {
+      const data = {
+        trixAttachment: JSON.stringify(this.attachment),
+        trixContentType: this.attachment.getContentType(),
+        trixId: this.attachment.id
+      };
+      const {
+        attributes
+      } = this.attachmentPiece;
+      if (!attributes.isEmpty()) {
+        data.trixAttributes = JSON.stringify(attributes);
+      }
+      if (this.attachment.isPending()) {
+        data.trixSerialize = false;
+      }
+      return data;
+    }
+    getHref() {
+      if (!htmlContainsTagName(this.attachment.getContent(), "a")) {
+        return this.attachment.getHref();
+      }
+    }
+    getCaptionConfig() {
+      var _config$attachments$t;
+      const type = this.attachment.getType();
+      const captionConfig = copyObject((_config$attachments$t = attachments[type]) === null || _config$attachments$t === void 0 ? void 0 : _config$attachments$t.caption);
+      if (type === "file") {
+        captionConfig.name = true;
+      }
+      return captionConfig;
+    }
+    findProgressElement() {
+      var _this$findElement;
+      return (_this$findElement = this.findElement()) === null || _this$findElement === void 0 ? void 0 : _this$findElement.querySelector("progress");
+    }
+
+    // Attachment delegate
+
+    attachmentDidChangeUploadProgress() {
+      const value = this.attachment.getUploadProgress();
+      const progressElement = this.findProgressElement();
+      if (progressElement) {
+        progressElement.value = value;
+      }
+    }
+  }
+  const createCursorTarget = name => makeElement({
+    tagName: "span",
+    textContent: ZERO_WIDTH_SPACE,
+    data: {
+      trixCursorTarget: name,
+      trixSerialize: false
+    }
+  });
+  const htmlContainsTagName = function (html, tagName) {
+    const div = makeElement("div");
+    HTMLSanitizer.setHTML(div, html || "");
+    return div.querySelector(tagName);
+  };
+
+  class PreviewableAttachmentView extends AttachmentView {
+    constructor() {
+      super(...arguments);
+      this.attachment.previewDelegate = this;
+    }
+    createContentNodes() {
+      this.image = makeElement({
+        tagName: "img",
+        attributes: {
+          src: ""
+        },
+        data: {
+          trixMutable: true
+        }
+      });
+      this.refresh(this.image);
+      return [this.image];
+    }
+    createCaptionElement() {
+      const figcaption = super.createCaptionElement(...arguments);
+      if (!figcaption.textContent) {
+        figcaption.setAttribute("data-trix-placeholder", lang$1.captionPlaceholder);
+      }
+      return figcaption;
+    }
+    refresh(image) {
+      if (!image) {
+        var _this$findElement;
+        image = (_this$findElement = this.findElement()) === null || _this$findElement === void 0 ? void 0 : _this$findElement.querySelector("img");
+      }
+      if (image) {
+        return this.updateAttributesForImage(image);
+      }
+    }
+    updateAttributesForImage(image) {
+      const url = this.attachment.getURL();
+      const previewURL = this.attachment.getPreviewURL();
+      image.src = previewURL || url;
+      if (previewURL === url) {
+        image.removeAttribute("data-trix-serialized-attributes");
+      } else {
+        const serializedAttributes = JSON.stringify({
+          src: url
+        });
+        image.setAttribute("data-trix-serialized-attributes", serializedAttributes);
+      }
+      const width = this.attachment.getWidth();
+      const height = this.attachment.getHeight();
+      if (width != null) {
+        image.width = width;
+      }
+      if (height != null) {
+        image.height = height;
+      }
+      const storeKey = ["imageElement", this.attachment.id, image.src, image.width, image.height].join("/");
+      image.dataset.trixStoreKey = storeKey;
+    }
+
+    // Attachment delegate
+
+    attachmentDidChangeAttributes() {
+      this.refresh(this.image);
+      return this.refresh();
+    }
+  }
+
+  /* eslint-disable
+      no-useless-escape,
+      no-var,
+  */
+  class PieceView extends ObjectView {
+    constructor() {
+      super(...arguments);
+      this.piece = this.object;
+      this.attributes = this.piece.getAttributes();
+      this.textConfig = this.options.textConfig;
+      this.context = this.options.context;
+      if (this.piece.attachment) {
+        this.attachment = this.piece.attachment;
+      } else {
+        this.string = this.piece.toString();
+      }
+    }
+    createNodes() {
+      let nodes = this.attachment ? this.createAttachmentNodes() : this.createStringNodes();
+      const element = this.createElement();
+      if (element) {
+        const innerElement = findInnerElement(element);
+        Array.from(nodes).forEach(node => {
+          innerElement.appendChild(node);
+        });
+        nodes = [element];
+      }
+      return nodes;
+    }
+    createAttachmentNodes() {
+      const constructor = this.attachment.isPreviewable() ? PreviewableAttachmentView : AttachmentView;
+      const view = this.createChildView(constructor, this.piece.attachment, {
+        piece: this.piece
+      });
+      return view.getNodes();
+    }
+    createStringNodes() {
+      var _this$textConfig;
+      if ((_this$textConfig = this.textConfig) !== null && _this$textConfig !== void 0 && _this$textConfig.plaintext) {
+        return [document.createTextNode(this.string)];
+      } else {
+        const nodes = [];
+        const iterable = this.string.split("\n");
+        for (let index = 0; index < iterable.length; index++) {
+          const substring = iterable[index];
+          if (index > 0) {
+            const element = makeElement("br");
+            nodes.push(element);
+          }
+          if (substring.length) {
+            const node = document.createTextNode(this.preserveSpaces(substring));
+            nodes.push(node);
+          }
+        }
+        return nodes;
+      }
+    }
+    createElement() {
+      let element, key, value;
+      const styles = {};
+      for (key in this.attributes) {
+        value = this.attributes[key];
+        const config = getTextConfig(key);
+        if (config) {
+          if (config.tagName) {
+            var innerElement;
+            const pendingElement = makeElement(config.tagName);
+            if (innerElement) {
+              innerElement.appendChild(pendingElement);
+              innerElement = pendingElement;
+            } else {
+              element = innerElement = pendingElement;
+            }
+          }
+          if (config.styleProperty) {
+            styles[config.styleProperty] = value;
+          }
+          if (config.style) {
+            for (key in config.style) {
+              value = config.style[key];
+              styles[key] = value;
+            }
+          }
+        }
+      }
+      if (Object.keys(styles).length) {
+        if (!element) {
+          element = makeElement("span");
+        }
+        for (key in styles) {
+          value = styles[key];
+          element.style[key] = value;
+        }
+      }
+      return element;
+    }
+    createContainerElement() {
+      for (const key in this.attributes) {
+        const value = this.attributes[key];
+        const config = getTextConfig(key);
+        if (config) {
+          if (config.groupTagName) {
+            const attributes = {};
+            attributes[key] = value;
+            return makeElement(config.groupTagName, attributes);
+          }
+        }
+      }
+    }
+    preserveSpaces(string) {
+      if (this.context.isLast) {
+        string = string.replace(/\ $/, NON_BREAKING_SPACE);
+      }
+      string = string.replace(/(\S)\ {3}(\S)/g, "$1 ".concat(NON_BREAKING_SPACE, " $2")).replace(/\ {2}/g, "".concat(NON_BREAKING_SPACE, " ")).replace(/\ {2}/g, " ".concat(NON_BREAKING_SPACE));
+      if (this.context.isFirst || this.context.followsWhitespace) {
+        string = string.replace(/^\ /, NON_BREAKING_SPACE);
+      }
+      return string;
+    }
+  }
+
+  /* eslint-disable
+      no-var,
+  */
+  class TextView extends ObjectView {
+    constructor() {
+      super(...arguments);
+      this.text = this.object;
+      this.textConfig = this.options.textConfig;
+    }
+    createNodes() {
+      const nodes = [];
+      const pieces = ObjectGroup.groupObjects(this.getPieces());
+      const lastIndex = pieces.length - 1;
+      for (let index = 0; index < pieces.length; index++) {
+        const piece = pieces[index];
+        const context = {};
+        if (index === 0) {
+          context.isFirst = true;
+        }
+        if (index === lastIndex) {
+          context.isLast = true;
+        }
+        if (endsWithWhitespace(previousPiece)) {
+          context.followsWhitespace = true;
+        }
+        const view = this.findOrCreateCachedChildView(PieceView, piece, {
+          textConfig: this.textConfig,
+          context
+        });
+        nodes.push(...Array.from(view.getNodes() || []));
+        var previousPiece = piece;
+      }
+      return nodes;
+    }
+    getPieces() {
+      return Array.from(this.text.getPieces()).filter(piece => !piece.hasAttribute("blockBreak"));
+    }
+  }
+  const endsWithWhitespace = piece => /\s$/.test(piece === null || piece === void 0 ? void 0 : piece.toString());
+
+  const {
+    css: css$1
+  } = config;
+  class BlockView extends ObjectView {
+    constructor() {
+      super(...arguments);
+      this.block = this.object;
+      this.attributes = this.block.getAttributes();
+    }
+    createNodes() {
+      const comment = document.createComment("block");
+      const nodes = [comment];
+      if (this.block.isEmpty()) {
+        nodes.push(makeElement("br"));
+      } else {
+        var _getBlockConfig;
+        const textConfig = (_getBlockConfig = getBlockConfig(this.block.getLastAttribute())) === null || _getBlockConfig === void 0 ? void 0 : _getBlockConfig.text;
+        const textView = this.findOrCreateCachedChildView(TextView, this.block.text, {
+          textConfig
+        });
+        nodes.push(...Array.from(textView.getNodes() || []));
+        if (this.shouldAddExtraNewlineElement()) {
+          nodes.push(makeElement("br"));
+        }
+      }
+      if (this.attributes.length) {
+        return nodes;
+      } else {
+        let attributes$1;
+        const {
+          tagName
+        } = attributes.default;
+        if (this.block.isRTL()) {
+          attributes$1 = {
+            dir: "rtl"
+          };
+        }
+        const element = makeElement({
+          tagName,
+          attributes: attributes$1
+        });
+        nodes.forEach(node => element.appendChild(node));
+        return [element];
+      }
+    }
+    createContainerElement(depth) {
+      const attributes = {};
+      let className;
+      const attributeName = this.attributes[depth];
+      const {
+        tagName,
+        htmlAttributes = []
+      } = getBlockConfig(attributeName);
+      if (depth === 0 && this.block.isRTL()) {
+        Object.assign(attributes, {
+          dir: "rtl"
+        });
+      }
+      if (attributeName === "attachmentGallery") {
+        const size = this.block.getBlockBreakPosition();
+        className = "".concat(css$1.attachmentGallery, " ").concat(css$1.attachmentGallery, "--").concat(size);
+      }
+      Object.entries(this.block.htmlAttributes).forEach(_ref => {
+        let [name, value] = _ref;
+        if (htmlAttributes.includes(name)) {
+          attributes[name] = value;
+        }
+      });
+      return makeElement({
+        tagName,
+        className,
+        attributes
+      });
+    }
+
+    // A single <br> at the end of a block element has no visual representation
+    // so add an extra one.
+    shouldAddExtraNewlineElement() {
+      return /\n\n$/.test(this.block.toString());
+    }
+  }
+
+  class DocumentView extends ObjectView {
+    static render(document) {
+      const element = makeElement("div");
+      const view = new this(document, {
+        element
+      });
+      view.render();
+      view.sync();
+      return element;
+    }
+    constructor() {
+      super(...arguments);
+      this.element = this.options.element;
+      this.elementStore = new ElementStore();
+      this.setDocument(this.object);
+    }
+    setDocument(document) {
+      if (!document.isEqualTo(this.document)) {
+        this.document = this.object = document;
+      }
+    }
+    render() {
+      this.childViews = [];
+      this.shadowElement = makeElement("div");
+      if (!this.document.isEmpty()) {
+        const objects = ObjectGroup.groupObjects(this.document.getBlocks(), {
+          asTree: true
+        });
+        Array.from(objects).forEach(object => {
+          const view = this.findOrCreateCachedChildView(BlockView, object);
+          Array.from(view.getNodes()).map(node => this.shadowElement.appendChild(node));
+        });
+      }
+    }
+    isSynced() {
+      return elementsHaveEqualHTML(this.shadowElement, this.element);
+    }
+    sync() {
+      const fragment = this.createDocumentFragmentForSync();
+      while (this.element.lastChild) {
+        this.element.removeChild(this.element.lastChild);
+      }
+      this.element.appendChild(fragment);
+      return this.didSync();
+    }
+
+    // Private
+
+    didSync() {
+      this.elementStore.reset(findStoredElements(this.element));
+      return defer(() => this.garbageCollectCachedViews());
+    }
+    createDocumentFragmentForSync() {
+      const fragment = document.createDocumentFragment();
+      Array.from(this.shadowElement.childNodes).forEach(node => {
+        fragment.appendChild(node.cloneNode(true));
+      });
+      Array.from(findStoredElements(fragment)).forEach(element => {
+        const storedElement = this.elementStore.remove(element);
+        if (storedElement) {
+          element.parentNode.replaceChild(storedElement, element);
+        }
+      });
+      return fragment;
+    }
+  }
+  const findStoredElements = element => element.querySelectorAll("[data-trix-store-key]");
+  const elementsHaveEqualHTML = (element, otherElement) => ignoreSpaces(element.innerHTML) === ignoreSpaces(otherElement.innerHTML);
+  const ignoreSpaces = html => html.replace(/&nbsp;/g, " ");
+
+  function _AsyncGenerator(e) {
+    var r, t;
+    function resume(r, t) {
+      try {
+        var n = e[r](t),
+          o = n.value,
+          u = o instanceof _OverloadYield;
+        Promise.resolve(u ? o.v : o).then(function (t) {
+          if (u) {
+            var i = "return" === r ? "return" : "next";
+            if (!o.k || t.done) return resume(i, t);
+            t = e[i](t).value;
+          }
+          settle(n.done ? "return" : "normal", t);
+        }, function (e) {
+          resume("throw", e);
+        });
+      } catch (e) {
+        settle("throw", e);
+      }
+    }
+    function settle(e, n) {
+      switch (e) {
+        case "return":
+          r.resolve({
+            value: n,
+            done: !0
+          });
+          break;
+        case "throw":
+          r.reject(n);
+          break;
+        default:
+          r.resolve({
+            value: n,
+            done: !1
+          });
+      }
+      (r = r.next) ? resume(r.key, r.arg) : t = null;
+    }
+    this._invoke = function (e, n) {
+      return new Promise(function (o, u) {
+        var i = {
+          key: e,
+          arg: n,
+          resolve: o,
+          reject: u,
+          next: null
+        };
+        t ? t = t.next = i : (r = t = i, resume(e, n));
+      });
+    }, "function" != typeof e.return && (this.return = void 0);
+  }
+  _AsyncGenerator.prototype["function" == typeof Symbol && Symbol.asyncIterator || "@@asyncIterator"] = function () {
+    return this;
+  }, _AsyncGenerator.prototype.next = function (e) {
+    return this._invoke("next", e);
+  }, _AsyncGenerator.prototype.throw = function (e) {
+    return this._invoke("throw", e);
+  }, _AsyncGenerator.prototype.return = function (e) {
+    return this._invoke("return", e);
+  };
+  function _OverloadYield(t, e) {
+    this.v = t, this.k = e;
+  }
+  function old_createMetadataMethodsForProperty(e, t, a, r) {
+    return {
+      getMetadata: function (o) {
+        old_assertNotFinished(r, "getMetadata"), old_assertMetadataKey(o);
+        var i = e[o];
+        if (void 0 !== i) if (1 === t) {
+          var n = i.public;
+          if (void 0 !== n) return n[a];
+        } else if (2 === t) {
+          var l = i.private;
+          if (void 0 !== l) return l.get(a);
+        } else if (Object.hasOwnProperty.call(i, "constructor")) return i.constructor;
+      },
+      setMetadata: function (o, i) {
+        old_assertNotFinished(r, "setMetadata"), old_assertMetadataKey(o);
+        var n = e[o];
+        if (void 0 === n && (n = e[o] = {}), 1 === t) {
+          var l = n.public;
+          void 0 === l && (l = n.public = {}), l[a] = i;
+        } else if (2 === t) {
+          var s = n.priv;
+          void 0 === s && (s = n.private = new Map()), s.set(a, i);
+        } else n.constructor = i;
+      }
+    };
+  }
+  function old_convertMetadataMapToFinal(e, t) {
+    var a = e[Symbol.metadata || Symbol.for("Symbol.metadata")],
+      r = Object.getOwnPropertySymbols(t);
+    if (0 !== r.length) {
+      for (var o = 0; o < r.length; o++) {
+        var i = r[o],
+          n = t[i],
+          l = a ? a[i] : null,
+          s = n.public,
+          c = l ? l.public : null;
+        s && c && Object.setPrototypeOf(s, c);
+        var d = n.private;
+        if (d) {
+          var u = Array.from(d.values()),
+            f = l ? l.private : null;
+          f && (u = u.concat(f)), n.private = u;
+        }
+        l && Object.setPrototypeOf(n, l);
+      }
+      a && Object.setPrototypeOf(t, a), e[Symbol.metadata || Symbol.for("Symbol.metadata")] = t;
+    }
+  }
+  function old_createAddInitializerMethod(e, t) {
+    return function (a) {
+      old_assertNotFinished(t, "addInitializer"), old_assertCallable(a, "An initializer"), e.push(a);
+    };
+  }
+  function old_memberDec(e, t, a, r, o, i, n, l, s) {
+    var c;
+    switch (i) {
+      case 1:
+        c = "accessor";
+        break;
+      case 2:
+        c = "method";
+        break;
+      case 3:
+        c = "getter";
+        break;
+      case 4:
+        c = "setter";
+        break;
+      default:
+        c = "field";
+    }
+    var d,
+      u,
+      f = {
+        kind: c,
+        name: l ? "#" + t : t,
+        isStatic: n,
+        isPrivate: l
+      },
+      p = {
+        v: !1
+      };
+    if (0 !== i && (f.addInitializer = old_createAddInitializerMethod(o, p)), l) {
+      d = 2, u = Symbol(t);
+      var v = {};
+      0 === i ? (v.get = a.get, v.set = a.set) : 2 === i ? v.get = function () {
+        return a.value;
+      } : (1 !== i && 3 !== i || (v.get = function () {
+        return a.get.call(this);
+      }), 1 !== i && 4 !== i || (v.set = function (e) {
+        a.set.call(this, e);
+      })), f.access = v;
+    } else d = 1, u = t;
+    try {
+      return e(s, Object.assign(f, old_createMetadataMethodsForProperty(r, d, u, p)));
+    } finally {
+      p.v = !0;
+    }
+  }
+  function old_assertNotFinished(e, t) {
+    if (e.v) throw new Error("attempted to call " + t + " after decoration was finished");
+  }
+  function old_assertMetadataKey(e) {
+    if ("symbol" != typeof e) throw new TypeError("Metadata keys must be symbols, received: " + e);
+  }
+  function old_assertCallable(e, t) {
+    if ("function" != typeof e) throw new TypeError(t + " must be a function");
+  }
+  function old_assertValidReturnValue(e, t) {
+    var a = typeof t;
+    if (1 === e) {
+      if ("object" !== a || null === t) throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
+      void 0 !== t.get && old_assertCallable(t.get, "accessor.get"), void 0 !== t.set && old_assertCallable(t.set, "accessor.set"), void 0 !== t.init && old_assertCallable(t.init, "accessor.init"), void 0 !== t.initializer && old_assertCallable(t.initializer, "accessor.initializer");
+    } else if ("function" !== a) {
+      var r;
+      throw r = 0 === e ? "field" : 10 === e ? "class" : "method", new TypeError(r + " decorators must return a function or void 0");
+    }
+  }
+  function old_getInit(e) {
+    var t;
+    return null == (t = e.init) && (t = e.initializer) && "undefined" != typeof console && console.warn(".initializer has been renamed to .init as of March 2022"), t;
+  }
+  function old_applyMemberDec(e, t, a, r, o, i, n, l, s) {
+    var c,
+      d,
+      u,
+      f,
+      p,
+      v,
+      h = a[0];
+    if (n ? c = 0 === o || 1 === o ? {
+      get: a[3],
+      set: a[4]
+    } : 3 === o ? {
+      get: a[3]
+    } : 4 === o ? {
+      set: a[3]
+    } : {
+      value: a[3]
+    } : 0 !== o && (c = Object.getOwnPropertyDescriptor(t, r)), 1 === o ? u = {
+      get: c.get,
+      set: c.set
+    } : 2 === o ? u = c.value : 3 === o ? u = c.get : 4 === o && (u = c.set), "function" == typeof h) void 0 !== (f = old_memberDec(h, r, c, l, s, o, i, n, u)) && (old_assertValidReturnValue(o, f), 0 === o ? d = f : 1 === o ? (d = old_getInit(f), p = f.get || u.get, v = f.set || u.set, u = {
+      get: p,
+      set: v
+    }) : u = f);else for (var y = h.length - 1; y >= 0; y--) {
+      var b;
+      if (void 0 !== (f = old_memberDec(h[y], r, c, l, s, o, i, n, u))) old_assertValidReturnValue(o, f), 0 === o ? b = f : 1 === o ? (b = old_getInit(f), p = f.get || u.get, v = f.set || u.set, u = {
+        get: p,
+        set: v
+      }) : u = f, void 0 !== b && (void 0 === d ? d = b : "function" == typeof d ? d = [d, b] : d.push(b));
+    }
+    if (0 === o || 1 === o) {
+      if (void 0 === d) d = function (e, t) {
+        return t;
+      };else if ("function" != typeof d) {
+        var g = d;
+        d = function (e, t) {
+          for (var a = t, r = 0; r < g.length; r++) a = g[r].call(e, a);
+          return a;
+        };
+      } else {
+        var m = d;
+        d = function (e, t) {
+          return m.call(e, t);
+        };
+      }
+      e.push(d);
+    }
+    0 !== o && (1 === o ? (c.get = u.get, c.set = u.set) : 2 === o ? c.value = u : 3 === o ? c.get = u : 4 === o && (c.set = u), n ? 1 === o ? (e.push(function (e, t) {
+      return u.get.call(e, t);
+    }), e.push(function (e, t) {
+      return u.set.call(e, t);
+    })) : 2 === o ? e.push(u) : e.push(function (e, t) {
+      return u.call(e, t);
+    }) : Object.defineProperty(t, r, c));
+  }
+  function old_applyMemberDecs(e, t, a, r, o) {
+    for (var i, n, l = new Map(), s = new Map(), c = 0; c < o.length; c++) {
+      var d = o[c];
+      if (Array.isArray(d)) {
+        var u,
+          f,
+          p,
+          v = d[1],
+          h = d[2],
+          y = d.length > 3,
+          b = v >= 5;
+        if (b ? (u = t, f = r, 0 !== (v -= 5) && (p = n = n || [])) : (u = t.prototype, f = a, 0 !== v && (p = i = i || [])), 0 !== v && !y) {
+          var g = b ? s : l,
+            m = g.get(h) || 0;
+          if (!0 === m || 3 === m && 4 !== v || 4 === m && 3 !== v) throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + h);
+          !m && v > 2 ? g.set(h, v) : g.set(h, !0);
+        }
+        old_applyMemberDec(e, u, d, h, v, b, y, f, p);
+      }
+    }
+    old_pushInitializers(e, i), old_pushInitializers(e, n);
+  }
+  function old_pushInitializers(e, t) {
+    t && e.push(function (e) {
+      for (var a = 0; a < t.length; a++) t[a].call(e);
+      return e;
+    });
+  }
+  function old_applyClassDecs(e, t, a, r) {
+    if (r.length > 0) {
+      for (var o = [], i = t, n = t.name, l = r.length - 1; l >= 0; l--) {
+        var s = {
+          v: !1
+        };
+        try {
+          var c = Object.assign({
+              kind: "class",
+              name: n,
+              addInitializer: old_createAddInitializerMethod(o, s)
+            }, old_createMetadataMethodsForProperty(a, 0, n, s)),
+            d = r[l](i, c);
+        } finally {
+          s.v = !0;
+        }
+        void 0 !== d && (old_assertValidReturnValue(10, d), i = d);
+      }
+      e.push(i, function () {
+        for (var e = 0; e < o.length; e++) o[e].call(i);
+      });
+    }
+  }
+  function _applyDecs(e, t, a) {
+    var r = [],
+      o = {},
+      i = {};
+    return old_applyMemberDecs(r, e, i, o, t), old_convertMetadataMapToFinal(e.prototype, i), old_applyClassDecs(r, e, o, a), old_convertMetadataMapToFinal(e, o), r;
+  }
+  function applyDecs2203Factory() {
+    function createAddInitializerMethod(e, t) {
+      return function (r) {
+        !function (e, t) {
+          if (e.v) throw new Error("attempted to call " + t + " after decoration was finished");
+        }(t, "addInitializer"), assertCallable(r, "An initializer"), e.push(r);
+      };
+    }
+    function memberDec(e, t, r, a, n, i, s, o) {
+      var c;
+      switch (n) {
+        case 1:
+          c = "accessor";
+          break;
+        case 2:
+          c = "method";
+          break;
+        case 3:
+          c = "getter";
+          break;
+        case 4:
+          c = "setter";
+          break;
+        default:
+          c = "field";
+      }
+      var l,
+        u,
+        f = {
+          kind: c,
+          name: s ? "#" + t : t,
+          static: i,
+          private: s
+        },
+        p = {
+          v: !1
+        };
+      0 !== n && (f.addInitializer = createAddInitializerMethod(a, p)), 0 === n ? s ? (l = r.get, u = r.set) : (l = function () {
+        return this[t];
+      }, u = function (e) {
+        this[t] = e;
+      }) : 2 === n ? l = function () {
+        return r.value;
+      } : (1 !== n && 3 !== n || (l = function () {
+        return r.get.call(this);
+      }), 1 !== n && 4 !== n || (u = function (e) {
+        r.set.call(this, e);
+      })), f.access = l && u ? {
+        get: l,
+        set: u
+      } : l ? {
+        get: l
+      } : {
+        set: u
+      };
+      try {
+        return e(o, f);
+      } finally {
+        p.v = !0;
+      }
+    }
+    function assertCallable(e, t) {
+      if ("function" != typeof e) throw new TypeError(t + " must be a function");
+    }
+    function assertValidReturnValue(e, t) {
+      var r = typeof t;
+      if (1 === e) {
+        if ("object" !== r || null === t) throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
+        void 0 !== t.get && assertCallable(t.get, "accessor.get"), void 0 !== t.set && assertCallable(t.set, "accessor.set"), void 0 !== t.init && assertCallable(t.init, "accessor.init");
+      } else if ("function" !== r) {
+        var a;
+        throw a = 0 === e ? "field" : 10 === e ? "class" : "method", new TypeError(a + " decorators must return a function or void 0");
+      }
+    }
+    function applyMemberDec(e, t, r, a, n, i, s, o) {
+      var c,
+        l,
+        u,
+        f,
+        p,
+        d,
+        h = r[0];
+      if (s ? c = 0 === n || 1 === n ? {
+        get: r[3],
+        set: r[4]
+      } : 3 === n ? {
+        get: r[3]
+      } : 4 === n ? {
+        set: r[3]
+      } : {
+        value: r[3]
+      } : 0 !== n && (c = Object.getOwnPropertyDescriptor(t, a)), 1 === n ? u = {
+        get: c.get,
+        set: c.set
+      } : 2 === n ? u = c.value : 3 === n ? u = c.get : 4 === n && (u = c.set), "function" == typeof h) void 0 !== (f = memberDec(h, a, c, o, n, i, s, u)) && (assertValidReturnValue(n, f), 0 === n ? l = f : 1 === n ? (l = f.init, p = f.get || u.get, d = f.set || u.set, u = {
+        get: p,
+        set: d
+      }) : u = f);else for (var v = h.length - 1; v >= 0; v--) {
+        var g;
+        if (void 0 !== (f = memberDec(h[v], a, c, o, n, i, s, u))) assertValidReturnValue(n, f), 0 === n ? g = f : 1 === n ? (g = f.init, p = f.get || u.get, d = f.set || u.set, u = {
+          get: p,
+          set: d
+        }) : u = f, void 0 !== g && (void 0 === l ? l = g : "function" == typeof l ? l = [l, g] : l.push(g));
+      }
+      if (0 === n || 1 === n) {
+        if (void 0 === l) l = function (e, t) {
+          return t;
+        };else if ("function" != typeof l) {
+          var y = l;
+          l = function (e, t) {
+            for (var r = t, a = 0; a < y.length; a++) r = y[a].call(e, r);
+            return r;
+          };
+        } else {
+          var m = l;
+          l = function (e, t) {
+            return m.call(e, t);
+          };
+        }
+        e.push(l);
+      }
+      0 !== n && (1 === n ? (c.get = u.get, c.set = u.set) : 2 === n ? c.value = u : 3 === n ? c.get = u : 4 === n && (c.set = u), s ? 1 === n ? (e.push(function (e, t) {
+        return u.get.call(e, t);
+      }), e.push(function (e, t) {
+        return u.set.call(e, t);
+      })) : 2 === n ? e.push(u) : e.push(function (e, t) {
+        return u.call(e, t);
+      }) : Object.defineProperty(t, a, c));
+    }
+    function pushInitializers(e, t) {
+      t && e.push(function (e) {
+        for (var r = 0; r < t.length; r++) t[r].call(e);
+        return e;
+      });
+    }
+    return function (e, t, r) {
+      var a = [];
+      return function (e, t, r) {
+        for (var a, n, i = new Map(), s = new Map(), o = 0; o < r.length; o++) {
+          var c = r[o];
+          if (Array.isArray(c)) {
+            var l,
+              u,
+              f = c[1],
+              p = c[2],
+              d = c.length > 3,
+              h = f >= 5;
+            if (h ? (l = t, 0 != (f -= 5) && (u = n = n || [])) : (l = t.prototype, 0 !== f && (u = a = a || [])), 0 !== f && !d) {
+              var v = h ? s : i,
+                g = v.get(p) || 0;
+              if (!0 === g || 3 === g && 4 !== f || 4 === g && 3 !== f) throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + p);
+              !g && f > 2 ? v.set(p, f) : v.set(p, !0);
+            }
+            applyMemberDec(e, l, c, p, f, h, d, u);
+          }
+        }
+        pushInitializers(e, a), pushInitializers(e, n);
+      }(a, e, t), function (e, t, r) {
+        if (r.length > 0) {
+          for (var a = [], n = t, i = t.name, s = r.length - 1; s >= 0; s--) {
+            var o = {
+              v: !1
+            };
+            try {
+              var c = r[s](n, {
+                kind: "class",
+                name: i,
+                addInitializer: createAddInitializerMethod(a, o)
+              });
+            } finally {
+              o.v = !0;
+            }
+            void 0 !== c && (assertValidReturnValue(10, c), n = c);
+          }
+          e.push(n, function () {
+            for (var e = 0; e < a.length; e++) a[e].call(n);
+          });
+        }
+      }(a, e, r), a;
+    };
+  }
+  var applyDecs2203Impl;
+  function _applyDecs2203(e, t, r) {
+    return (applyDecs2203Impl = applyDecs2203Impl || applyDecs2203Factory())(e, t, r);
+  }
+  function applyDecs2203RFactory() {
+    function createAddInitializerMethod(e, t) {
+      return function (r) {
+        !function (e, t) {
+          if (e.v) throw new Error("attempted to call " + t + " after decoration was finished");
+        }(t, "addInitializer"), assertCallable(r, "An initializer"), e.push(r);
+      };
+    }
+    function memberDec(e, t, r, n, a, i, s, o) {
+      var c;
+      switch (a) {
+        case 1:
+          c = "accessor";
+          break;
+        case 2:
+          c = "method";
+          break;
+        case 3:
+          c = "getter";
+          break;
+        case 4:
+          c = "setter";
+          break;
+        default:
+          c = "field";
+      }
+      var l,
+        u,
+        f = {
+          kind: c,
+          name: s ? "#" + t : t,
+          static: i,
+          private: s
+        },
+        p = {
+          v: !1
+        };
+      0 !== a && (f.addInitializer = createAddInitializerMethod(n, p)), 0 === a ? s ? (l = r.get, u = r.set) : (l = function () {
+        return this[t];
+      }, u = function (e) {
+        this[t] = e;
+      }) : 2 === a ? l = function () {
+        return r.value;
+      } : (1 !== a && 3 !== a || (l = function () {
+        return r.get.call(this);
+      }), 1 !== a && 4 !== a || (u = function (e) {
+        r.set.call(this, e);
+      })), f.access = l && u ? {
+        get: l,
+        set: u
+      } : l ? {
+        get: l
+      } : {
+        set: u
+      };
+      try {
+        return e(o, f);
+      } finally {
+        p.v = !0;
+      }
+    }
+    function assertCallable(e, t) {
+      if ("function" != typeof e) throw new TypeError(t + " must be a function");
+    }
+    function assertValidReturnValue(e, t) {
+      var r = typeof t;
+      if (1 === e) {
+        if ("object" !== r || null === t) throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
+        void 0 !== t.get && assertCallable(t.get, "accessor.get"), void 0 !== t.set && assertCallable(t.set, "accessor.set"), void 0 !== t.init && assertCallable(t.init, "accessor.init");
+      } else if ("function" !== r) {
+        var n;
+        throw n = 0 === e ? "field" : 10 === e ? "class" : "method", new TypeError(n + " decorators must return a function or void 0");
+      }
+    }
+    function applyMemberDec(e, t, r, n, a, i, s, o) {
+      var c,
+        l,
+        u,
+        f,
+        p,
+        d,
+        h = r[0];
+      if (s ? c = 0 === a || 1 === a ? {
+        get: r[3],
+        set: r[4]
+      } : 3 === a ? {
+        get: r[3]
+      } : 4 === a ? {
+        set: r[3]
+      } : {
+        value: r[3]
+      } : 0 !== a && (c = Object.getOwnPropertyDescriptor(t, n)), 1 === a ? u = {
+        get: c.get,
+        set: c.set
+      } : 2 === a ? u = c.value : 3 === a ? u = c.get : 4 === a && (u = c.set), "function" == typeof h) void 0 !== (f = memberDec(h, n, c, o, a, i, s, u)) && (assertValidReturnValue(a, f), 0 === a ? l = f : 1 === a ? (l = f.init, p = f.get || u.get, d = f.set || u.set, u = {
+        get: p,
+        set: d
+      }) : u = f);else for (var v = h.length - 1; v >= 0; v--) {
+        var g;
+        if (void 0 !== (f = memberDec(h[v], n, c, o, a, i, s, u))) assertValidReturnValue(a, f), 0 === a ? g = f : 1 === a ? (g = f.init, p = f.get || u.get, d = f.set || u.set, u = {
+          get: p,
+          set: d
+        }) : u = f, void 0 !== g && (void 0 === l ? l = g : "function" == typeof l ? l = [l, g] : l.push(g));
+      }
+      if (0 === a || 1 === a) {
+        if (void 0 === l) l = function (e, t) {
+          return t;
+        };else if ("function" != typeof l) {
+          var y = l;
+          l = function (e, t) {
+            for (var r = t, n = 0; n < y.length; n++) r = y[n].call(e, r);
+            return r;
+          };
+        } else {
+          var m = l;
+          l = function (e, t) {
+            return m.call(e, t);
+          };
+        }
+        e.push(l);
+      }
+      0 !== a && (1 === a ? (c.get = u.get, c.set = u.set) : 2 === a ? c.value = u : 3 === a ? c.get = u : 4 === a && (c.set = u), s ? 1 === a ? (e.push(function (e, t) {
+        return u.get.call(e, t);
+      }), e.push(function (e, t) {
+        return u.set.call(e, t);
+      })) : 2 === a ? e.push(u) : e.push(function (e, t) {
+        return u.call(e, t);
+      }) : Object.defineProperty(t, n, c));
+    }
+    function applyMemberDecs(e, t) {
+      for (var r, n, a = [], i = new Map(), s = new Map(), o = 0; o < t.length; o++) {
+        var c = t[o];
+        if (Array.isArray(c)) {
+          var l,
+            u,
+            f = c[1],
+            p = c[2],
+            d = c.length > 3,
+            h = f >= 5;
+          if (h ? (l = e, 0 !== (f -= 5) && (u = n = n || [])) : (l = e.prototype, 0 !== f && (u = r = r || [])), 0 !== f && !d) {
+            var v = h ? s : i,
+              g = v.get(p) || 0;
+            if (!0 === g || 3 === g && 4 !== f || 4 === g && 3 !== f) throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + p);
+            !g && f > 2 ? v.set(p, f) : v.set(p, !0);
+          }
+          applyMemberDec(a, l, c, p, f, h, d, u);
+        }
+      }
+      return pushInitializers(a, r), pushInitializers(a, n), a;
+    }
+    function pushInitializers(e, t) {
+      t && e.push(function (e) {
+        for (var r = 0; r < t.length; r++) t[r].call(e);
+        return e;
+      });
+    }
+    return function (e, t, r) {
+      return {
+        e: applyMemberDecs(e, t),
+        get c() {
+          return function (e, t) {
+            if (t.length > 0) {
+              for (var r = [], n = e, a = e.name, i = t.length - 1; i >= 0; i--) {
+                var s = {
+                  v: !1
+                };
+                try {
+                  var o = t[i](n, {
+                    kind: "class",
+                    name: a,
+                    addInitializer: createAddInitializerMethod(r, s)
+                  });
+                } finally {
+                  s.v = !0;
+                }
+                void 0 !== o && (assertValidReturnValue(10, o), n = o);
+              }
+              return [n, function () {
+                for (var e = 0; e < r.length; e++) r[e].call(n);
+              }];
+            }
+          }(e, r);
+        }
+      };
+    };
+  }
+  function _applyDecs2203R(e, t, r) {
+    return (_applyDecs2203R = applyDecs2203RFactory())(e, t, r);
+  }
+  function applyDecs2301Factory() {
+    function createAddInitializerMethod(e, t) {
+      return function (r) {
+        !function (e, t) {
+          if (e.v) throw new Error("attempted to call " + t + " after decoration was finished");
+        }(t, "addInitializer"), assertCallable(r, "An initializer"), e.push(r);
+      };
+    }
+    function assertInstanceIfPrivate(e, t) {
+      if (!e(t)) throw new TypeError("Attempted to access private element on non-instance");
+    }
+    function memberDec(e, t, r, n, a, i, s, o, c) {
+      var u;
+      switch (a) {
+        case 1:
+          u = "accessor";
+          break;
+        case 2:
+          u = "method";
+          break;
+        case 3:
+          u = "getter";
+          break;
+        case 4:
+          u = "setter";
+          break;
+        default:
+          u = "field";
+      }
+      var l,
+        f,
+        p = {
+          kind: u,
+          name: s ? "#" + t : t,
+          static: i,
+          private: s
+        },
+        d = {
+          v: !1
+        };
+      if (0 !== a && (p.addInitializer = createAddInitializerMethod(n, d)), s || 0 !== a && 2 !== a) {
+        if (2 === a) l = function (e) {
+          return assertInstanceIfPrivate(c, e), r.value;
+        };else {
+          var h = 0 === a || 1 === a;
+          (h || 3 === a) && (l = s ? function (e) {
+            return assertInstanceIfPrivate(c, e), r.get.call(e);
+          } : function (e) {
+            return r.get.call(e);
+          }), (h || 4 === a) && (f = s ? function (e, t) {
+            assertInstanceIfPrivate(c, e), r.set.call(e, t);
+          } : function (e, t) {
+            r.set.call(e, t);
+          });
+        }
+      } else l = function (e) {
+        return e[t];
+      }, 0 === a && (f = function (e, r) {
+        e[t] = r;
+      });
+      var v = s ? c.bind() : function (e) {
+        return t in e;
+      };
+      p.access = l && f ? {
+        get: l,
+        set: f,
+        has: v
+      } : l ? {
+        get: l,
+        has: v
+      } : {
+        set: f,
+        has: v
+      };
+      try {
+        return e(o, p);
+      } finally {
+        d.v = !0;
+      }
+    }
+    function assertCallable(e, t) {
+      if ("function" != typeof e) throw new TypeError(t + " must be a function");
+    }
+    function assertValidReturnValue(e, t) {
+      var r = typeof t;
+      if (1 === e) {
+        if ("object" !== r || null === t) throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
+        void 0 !== t.get && assertCallable(t.get, "accessor.get"), void 0 !== t.set && assertCallable(t.set, "accessor.set"), void 0 !== t.init && assertCallable(t.init, "accessor.init");
+      } else if ("function" !== r) {
+        var n;
+        throw n = 0 === e ? "field" : 10 === e ? "class" : "method", new TypeError(n + " decorators must return a function or void 0");
+      }
+    }
+    function curryThis2(e) {
+      return function (t) {
+        e(this, t);
+      };
+    }
+    function applyMemberDec(e, t, r, n, a, i, s, o, c) {
+      var u,
+        l,
+        f,
+        p,
+        d,
+        h,
+        v,
+        g = r[0];
+      if (s ? u = 0 === a || 1 === a ? {
+        get: (p = r[3], function () {
+          return p(this);
+        }),
+        set: curryThis2(r[4])
+      } : 3 === a ? {
+        get: r[3]
+      } : 4 === a ? {
+        set: r[3]
+      } : {
+        value: r[3]
+      } : 0 !== a && (u = Object.getOwnPropertyDescriptor(t, n)), 1 === a ? f = {
+        get: u.get,
+        set: u.set
+      } : 2 === a ? f = u.value : 3 === a ? f = u.get : 4 === a && (f = u.set), "function" == typeof g) void 0 !== (d = memberDec(g, n, u, o, a, i, s, f, c)) && (assertValidReturnValue(a, d), 0 === a ? l = d : 1 === a ? (l = d.init, h = d.get || f.get, v = d.set || f.set, f = {
+        get: h,
+        set: v
+      }) : f = d);else for (var y = g.length - 1; y >= 0; y--) {
+        var m;
+        if (void 0 !== (d = memberDec(g[y], n, u, o, a, i, s, f, c))) assertValidReturnValue(a, d), 0 === a ? m = d : 1 === a ? (m = d.init, h = d.get || f.get, v = d.set || f.set, f = {
+          get: h,
+          set: v
+        }) : f = d, void 0 !== m && (void 0 === l ? l = m : "function" == typeof l ? l = [l, m] : l.push(m));
+      }
+      if (0 === a || 1 === a) {
+        if (void 0 === l) l = function (e, t) {
+          return t;
+        };else if ("function" != typeof l) {
+          var b = l;
+          l = function (e, t) {
+            for (var r = t, n = 0; n < b.length; n++) r = b[n].call(e, r);
+            return r;
+          };
+        } else {
+          var I = l;
+          l = function (e, t) {
+            return I.call(e, t);
+          };
+        }
+        e.push(l);
+      }
+      0 !== a && (1 === a ? (u.get = f.get, u.set = f.set) : 2 === a ? u.value = f : 3 === a ? u.get = f : 4 === a && (u.set = f), s ? 1 === a ? (e.push(function (e, t) {
+        return f.get.call(e, t);
+      }), e.push(function (e, t) {
+        return f.set.call(e, t);
+      })) : 2 === a ? e.push(f) : e.push(function (e, t) {
+        return f.call(e, t);
+      }) : Object.defineProperty(t, n, u));
+    }
+    function applyMemberDecs(e, t, r) {
+      for (var n, a, i, s = [], o = new Map(), c = new Map(), u = 0; u < t.length; u++) {
+        var l = t[u];
+        if (Array.isArray(l)) {
+          var f,
+            p,
+            d = l[1],
+            h = l[2],
+            v = l.length > 3,
+            g = d >= 5,
+            y = r;
+          if (g ? (f = e, 0 !== (d -= 5) && (p = a = a || []), v && !i && (i = function (t) {
+            return _checkInRHS(t) === e;
+          }), y = i) : (f = e.prototype, 0 !== d && (p = n = n || [])), 0 !== d && !v) {
+            var m = g ? c : o,
+              b = m.get(h) || 0;
+            if (!0 === b || 3 === b && 4 !== d || 4 === b && 3 !== d) throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + h);
+            !b && d > 2 ? m.set(h, d) : m.set(h, !0);
+          }
+          applyMemberDec(s, f, l, h, d, g, v, p, y);
+        }
+      }
+      return pushInitializers(s, n), pushInitializers(s, a), s;
+    }
+    function pushInitializers(e, t) {
+      t && e.push(function (e) {
+        for (var r = 0; r < t.length; r++) t[r].call(e);
+        return e;
+      });
+    }
+    return function (e, t, r, n) {
+      return {
+        e: applyMemberDecs(e, t, n),
+        get c() {
+          return function (e, t) {
+            if (t.length > 0) {
+              for (var r = [], n = e, a = e.name, i = t.length - 1; i >= 0; i--) {
+                var s = {
+                  v: !1
+                };
+                try {
+                  var o = t[i](n, {
+                    kind: "class",
+                    name: a,
+                    addInitializer: createAddInitializerMethod(r, s)
+                  });
+                } finally {
+                  s.v = !0;
+                }
+                void 0 !== o && (assertValidReturnValue(10, o), n = o);
+              }
+              return [n, function () {
+                for (var e = 0; e < r.length; e++) r[e].call(n);
+              }];
+            }
+          }(e, r);
+        }
+      };
+    };
+  }
+  function _applyDecs2301(e, t, r, n) {
+    return (_applyDecs2301 = applyDecs2301Factory())(e, t, r, n);
+  }
+  function createAddInitializerMethod(e, t) {
+    return function (r) {
+      assertNotFinished(t, "addInitializer"), assertCallable(r, "An initializer"), e.push(r);
+    };
+  }
+  function assertInstanceIfPrivate(e, t) {
+    if (!e(t)) throw new TypeError("Attempted to access private element on non-instance");
+  }
+  function memberDec(e, t, r, a, n, i, s, o, c, l, u) {
+    var f;
+    switch (i) {
+      case 1:
+        f = "accessor";
+        break;
+      case 2:
+        f = "method";
+        break;
+      case 3:
+        f = "getter";
+        break;
+      case 4:
+        f = "setter";
+        break;
+      default:
+        f = "field";
+    }
+    var d,
+      p,
+      h = {
+        kind: f,
+        name: o ? "#" + r : r,
+        static: s,
+        private: o,
+        metadata: u
+      },
+      v = {
+        v: !1
+      };
+    if (0 !== i && (h.addInitializer = createAddInitializerMethod(n, v)), o || 0 !== i && 2 !== i) {
+      if (2 === i) d = function (e) {
+        return assertInstanceIfPrivate(l, e), a.value;
+      };else {
+        var y = 0 === i || 1 === i;
+        (y || 3 === i) && (d = o ? function (e) {
+          return assertInstanceIfPrivate(l, e), a.get.call(e);
+        } : function (e) {
+          return a.get.call(e);
+        }), (y || 4 === i) && (p = o ? function (e, t) {
+          assertInstanceIfPrivate(l, e), a.set.call(e, t);
+        } : function (e, t) {
+          a.set.call(e, t);
+        });
+      }
+    } else d = function (e) {
+      return e[r];
+    }, 0 === i && (p = function (e, t) {
+      e[r] = t;
+    });
+    var m = o ? l.bind() : function (e) {
+      return r in e;
+    };
+    h.access = d && p ? {
+      get: d,
+      set: p,
+      has: m
+    } : d ? {
+      get: d,
+      has: m
+    } : {
+      set: p,
+      has: m
+    };
+    try {
+      return e.call(t, c, h);
+    } finally {
+      v.v = !0;
+    }
+  }
+  function assertNotFinished(e, t) {
+    if (e.v) throw new Error("attempted to call " + t + " after decoration was finished");
+  }
+  function assertCallable(e, t) {
+    if ("function" != typeof e) throw new TypeError(t + " must be a function");
+  }
+  function assertValidReturnValue(e, t) {
+    var r = typeof t;
+    if (1 === e) {
+      if ("object" !== r || null === t) throw new TypeError("accessor decorators must return an object with get, set, or init properties or void 0");
+      void 0 !== t.get && assertCallable(t.get, "accessor.get"), void 0 !== t.set && assertCallable(t.set, "accessor.set"), void 0 !== t.init && assertCallable(t.init, "accessor.init");
+    } else if ("function" !== r) {
+      var a;
+      throw a = 0 === e ? "field" : 5 === e ? "class" : "method", new TypeError(a + " decorators must return a function or void 0");
+    }
+  }
+  function curryThis1(e) {
+    return function () {
+      return e(this);
+    };
+  }
+  function curryThis2(e) {
+    return function (t) {
+      e(this, t);
+    };
+  }
+  function applyMemberDec(e, t, r, a, n, i, s, o, c, l, u) {
+    var f,
+      d,
+      p,
+      h,
+      v,
+      y,
+      m = r[0];
+    a || Array.isArray(m) || (m = [m]), o ? f = 0 === i || 1 === i ? {
+      get: curryThis1(r[3]),
+      set: curryThis2(r[4])
+    } : 3 === i ? {
+      get: r[3]
+    } : 4 === i ? {
+      set: r[3]
+    } : {
+      value: r[3]
+    } : 0 !== i && (f = Object.getOwnPropertyDescriptor(t, n)), 1 === i ? p = {
+      get: f.get,
+      set: f.set
+    } : 2 === i ? p = f.value : 3 === i ? p = f.get : 4 === i && (p = f.set);
+    for (var g = a ? 2 : 1, b = m.length - 1; b >= 0; b -= g) {
+      var I;
+      if (void 0 !== (h = memberDec(m[b], a ? m[b - 1] : void 0, n, f, c, i, s, o, p, l, u))) assertValidReturnValue(i, h), 0 === i ? I = h : 1 === i ? (I = h.init, v = h.get || p.get, y = h.set || p.set, p = {
+        get: v,
+        set: y
+      }) : p = h, void 0 !== I && (void 0 === d ? d = I : "function" == typeof d ? d = [d, I] : d.push(I));
+    }
+    if (0 === i || 1 === i) {
+      if (void 0 === d) d = function (e, t) {
+        return t;
+      };else if ("function" != typeof d) {
+        var w = d;
+        d = function (e, t) {
+          for (var r = t, a = w.length - 1; a >= 0; a--) r = w[a].call(e, r);
+          return r;
+        };
+      } else {
+        var M = d;
+        d = function (e, t) {
+          return M.call(e, t);
+        };
+      }
+      e.push(d);
+    }
+    0 !== i && (1 === i ? (f.get = p.get, f.set = p.set) : 2 === i ? f.value = p : 3 === i ? f.get = p : 4 === i && (f.set = p), o ? 1 === i ? (e.push(function (e, t) {
+      return p.get.call(e, t);
+    }), e.push(function (e, t) {
+      return p.set.call(e, t);
+    })) : 2 === i ? e.push(p) : e.push(function (e, t) {
+      return p.call(e, t);
+    }) : Object.defineProperty(t, n, f));
+  }
+  function applyMemberDecs(e, t, r, a) {
+    for (var n, i, s, o = [], c = new Map(), l = new Map(), u = 0; u < t.length; u++) {
+      var f = t[u];
+      if (Array.isArray(f)) {
+        var d,
+          p,
+          h = f[1],
+          v = f[2],
+          y = f.length > 3,
+          m = 16 & h,
+          g = !!(8 & h),
+          b = r;
+        if (h &= 7, g ? (d = e, 0 !== h && (p = i = i || []), y && !s && (s = function (t) {
+          return _checkInRHS(t) === e;
+        }), b = s) : (d = e.prototype, 0 !== h && (p = n = n || [])), 0 !== h && !y) {
+          var I = g ? l : c,
+            w = I.get(v) || 0;
+          if (!0 === w || 3 === w && 4 !== h || 4 === w && 3 !== h) throw new Error("Attempted to decorate a public method/accessor that has the same name as a previously decorated public method/accessor. This is not currently supported by the decorators plugin. Property name was: " + v);
+          I.set(v, !(!w && h > 2) || h);
+        }
+        applyMemberDec(o, d, f, m, v, h, g, y, p, b, a);
+      }
+    }
+    return pushInitializers(o, n), pushInitializers(o, i), o;
+  }
+  function pushInitializers(e, t) {
+    t && e.push(function (e) {
+      for (var r = 0; r < t.length; r++) t[r].call(e);
+      return e;
+    });
+  }
+  function applyClassDecs(e, t, r, a) {
+    if (t.length) {
+      for (var n = [], i = e, s = e.name, o = r ? 2 : 1, c = t.length - 1; c >= 0; c -= o) {
+        var l = {
+          v: !1
+        };
+        try {
+          var u = t[c].call(r ? t[c - 1] : void 0, i, {
+            kind: "class",
+            name: s,
+            addInitializer: createAddInitializerMethod(n, l),
+            metadata: a
+          });
+        } finally {
+          l.v = !0;
+        }
+        void 0 !== u && (assertValidReturnValue(5, u), i = u);
+      }
+      return [defineMetadata(i, a), function () {
+        for (var e = 0; e < n.length; e++) n[e].call(i);
+      }];
+    }
+  }
+  function defineMetadata(e, t) {
+    return Object.defineProperty(e, Symbol.metadata || Symbol.for("Symbol.metadata"), {
+      configurable: !0,
+      enumerable: !0,
+      value: t
+    });
+  }
+  function _applyDecs2305(e, t, r, a, n, i) {
+    if (arguments.length >= 6) var s = i[Symbol.metadata || Symbol.for("Symbol.metadata")];
+    var o = Object.create(void 0 === s ? null : s),
+      c = applyMemberDecs(e, t, n, o);
+    return r.length || defineMetadata(e, o), {
+      e: c,
+      get c() {
+        return applyClassDecs(e, r, a, o);
+      }
+    };
+  }
+  function _asyncGeneratorDelegate(t) {
+    var e = {},
+      n = !1;
+    function pump(e, r) {
+      return n = !0, r = new Promise(function (n) {
+        n(t[e](r));
+      }), {
+        done: !1,
+        value: new _OverloadYield(r, 1)
+      };
+    }
+    return e["undefined" != typeof Symbol && Symbol.iterator || "@@iterator"] = function () {
+      return this;
+    }, e.next = function (t) {
+      return n ? (n = !1, t) : pump("next", t);
+    }, "function" == typeof t.throw && (e.throw = function (t) {
+      if (n) throw n = !1, t;
+      return pump("throw", t);
+    }), "function" == typeof t.return && (e.return = function (t) {
+      return n ? (n = !1, t) : pump("return", t);
+    }), e;
+  }
+  function _asyncIterator(r) {
+    var n,
+      t,
+      o,
+      e = 2;
+    for ("undefined" != typeof Symbol && (t = Symbol.asyncIterator, o = Symbol.iterator); e--;) {
+      if (t && null != (n = r[t])) return n.call(r);
+      if (o && null != (n = r[o])) return new AsyncFromSyncIterator(n.call(r));
+      t = "@@asyncIterator", o = "@@iterator";
+    }
+    throw new TypeError("Object is not async iterable");
+  }
+  function AsyncFromSyncIterator(r) {
+    function AsyncFromSyncIteratorContinuation(r) {
+      if (Object(r) !== r) return Promise.reject(new TypeError(r + " is not an object."));
+      var n = r.done;
+      return Promise.resolve(r.value).then(function (r) {
+        return {
+          value: r,
+          done: n
+        };
+      });
+    }
+    return AsyncFromSyncIterator = function (r) {
+      this.s = r, this.n = r.next;
+    }, AsyncFromSyncIterator.prototype = {
+      s: null,
+      n: null,
+      next: function () {
+        return AsyncFromSyncIteratorContinuation(this.n.apply(this.s, arguments));
+      },
+      return: function (r) {
+        var n = this.s.return;
+        return void 0 === n ? Promise.resolve({
+          value: r,
+          done: !0
+        }) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments));
+      },
+      throw: function (r) {
+        var n = this.s.return;
+        return void 0 === n ? Promise.reject(r) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments));
+      }
+    }, new AsyncFromSyncIterator(r);
+  }
+  function _awaitAsyncGenerator(e) {
+    return new _OverloadYield(e, 0);
+  }
+  function _checkInRHS(e) {
+    if (Object(e) !== e) throw TypeError("right-hand side of 'in' should be an object, got " + (null !== e ? typeof e : "null"));
+    return e;
+  }
+  function _defineAccessor(e, r, n, t) {
+    var c = {
+      configurable: !0,
+      enumerable: !0
+    };
+    return c[e] = t, Object.defineProperty(r, n, c);
+  }
+  function dispose_SuppressedError(r, e) {
+    return "undefined" != typeof SuppressedError ? dispose_SuppressedError = SuppressedError : (dispose_SuppressedError = function (r, e) {
+      this.suppressed = r, this.error = e, this.stack = new Error().stack;
+    }, dispose_SuppressedError.prototype = Object.create(Error.prototype, {
+      constructor: {
+        value: dispose_SuppressedError,
+        writable: !0,
+        configurable: !0
+      }
+    })), new dispose_SuppressedError(r, e);
+  }
+  function _dispose(r, e, s) {
+    function next() {
+      for (; r.length > 0;) try {
+        var o = r.pop(),
+          p = o.d.call(o.v);
+        if (o.a) return Promise.resolve(p).then(next, err);
+      } catch (r) {
+        return err(r);
+      }
+      if (s) throw e;
+    }
+    function err(r) {
+      return e = s ? new dispose_SuppressedError(r, e) : r, s = !0, next();
+    }
+    return next();
+  }
+  function _importDeferProxy(e) {
+    var t = null,
+      constValue = function (e) {
+        return function () {
+          return e;
+        };
+      },
+      proxy = function (r) {
+        return function (n, o, f) {
+          return null === t && (t = e()), r(t, o, f);
+        };
+      };
+    return new Proxy({}, {
+      defineProperty: constValue(!1),
+      deleteProperty: constValue(!1),
+      get: proxy(Reflect.get),
+      getOwnPropertyDescriptor: proxy(Reflect.getOwnPropertyDescriptor),
+      getPrototypeOf: constValue(null),
+      isExtensible: constValue(!1),
+      has: proxy(Reflect.has),
+      ownKeys: proxy(Reflect.ownKeys),
+      preventExtensions: constValue(!0),
+      set: constValue(!1),
+      setPrototypeOf: constValue(!1)
+    });
+  }
+  function _iterableToArrayLimit(r, l) {
+    var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
+    if (null != t) {
+      var e,
+        n,
+        i,
+        u,
+        a = [],
+        f = !0,
+        o = !1;
+      try {
+        if (i = (t = t.call(r)).next, 0 === l) {
+          if (Object(t) !== t) return;
+          f = !1;
+        } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0);
+      } catch (r) {
+        o = !0, n = r;
+      } finally {
+        try {
+          if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return;
+        } finally {
+          if (o) throw n;
+        }
+      }
+      return a;
+    }
+  }
+  function _iterableToArrayLimitLoose(e, r) {
+    var t = e && ("undefined" != typeof Symbol && e[Symbol.iterator] || e["@@iterator"]);
+    if (null != t) {
+      var o,
+        l = [];
+      for (t = t.call(e); e.length < r && !(o = t.next()).done;) l.push(o.value);
+      return l;
+    }
+  }
+  var REACT_ELEMENT_TYPE;
+  function _jsx(e, r, E, l) {
+    REACT_ELEMENT_TYPE || (REACT_ELEMENT_TYPE = "function" == typeof Symbol && Symbol.for && Symbol.for("react.element") || 60103);
+    var o = e && e.defaultProps,
+      n = arguments.length - 3;
+    if (r || 0 === n || (r = {
+      children: void 0
+    }), 1 === n) r.children = l;else if (n > 1) {
+      for (var t = new Array(n), f = 0; f < n; f++) t[f] = arguments[f + 3];
+      r.children = t;
+    }
+    if (r && o) for (var i in o) void 0 === r[i] && (r[i] = o[i]);else r || (r = o || {});
+    return {
+      $$typeof: REACT_ELEMENT_TYPE,
+      type: e,
+      key: void 0 === E ? null : "" + E,
+      ref: null,
+      props: r,
+      _owner: null
+    };
+  }
+  function ownKeys(e, r) {
+    var t = Object.keys(e);
+    if (Object.getOwnPropertySymbols) {
+      var o = Object.getOwnPropertySymbols(e);
+      r && (o = o.filter(function (r) {
+        return Object.getOwnPropertyDescriptor(e, r).enumerable;
+      })), t.push.apply(t, o);
+    }
+    return t;
+  }
+  function _objectSpread2(e) {
+    for (var r = 1; r < arguments.length; r++) {
+      var t = null != arguments[r] ? arguments[r] : {};
+      r % 2 ? ownKeys(Object(t), !0).forEach(function (r) {
+        _defineProperty(e, r, t[r]);
+      }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) {
+        Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r));
+      });
+    }
+    return e;
+  }
+  function _regeneratorRuntime() {
+    "use strict"; /*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */
+    _regeneratorRuntime = function () {
+      return e;
+    };
+    var t,
+      e = {},
+      r = Object.prototype,
+      n = r.hasOwnProperty,
+      o = Object.defineProperty || function (t, e, r) {
+        t[e] = r.value;
+      },
+      i = "function" == typeof Symbol ? Symbol : {},
+      a = i.iterator || "@@iterator",
+      c = i.asyncIterator || "@@asyncIterator",
+      u = i.toStringTag || "@@toStringTag";
+    function define(t, e, r) {
+      return Object.defineProperty(t, e, {
+        value: r,
+        enumerable: !0,
+        configurable: !0,
+        writable: !0
+      }), t[e];
+    }
+    try {
+      define({}, "");
+    } catch (t) {
+      define = function (t, e, r) {
+        return t[e] = r;
+      };
+    }
+    function wrap(t, e, r, n) {
+      var i = e && e.prototype instanceof Generator ? e : Generator,
+        a = Object.create(i.prototype),
+        c = new Context(n || []);
+      return o(a, "_invoke", {
+        value: makeInvokeMethod(t, r, c)
+      }), a;
+    }
+    function tryCatch(t, e, r) {
+      try {
+        return {
+          type: "normal",
+          arg: t.call(e, r)
+        };
+      } catch (t) {
+        return {
+          type: "throw",
+          arg: t
+        };
+      }
+    }
+    e.wrap = wrap;
+    var h = "suspendedStart",
+      l = "suspendedYield",
+      f = "executing",
+      s = "completed",
+      y = {};
+    function Generator() {}
+    function GeneratorFunction() {}
+    function GeneratorFunctionPrototype() {}
+    var p = {};
+    define(p, a, function () {
+      return this;
+    });
+    var d = Object.getPrototypeOf,
+      v = d && d(d(values([])));
+    v && v !== r && n.call(v, a) && (p = v);
+    var g = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(p);
+    function defineIteratorMethods(t) {
+      ["next", "throw", "return"].forEach(function (e) {
+        define(t, e, function (t) {
+          return this._invoke(e, t);
+        });
+      });
+    }
+    function AsyncIterator(t, e) {
+      function invoke(r, o, i, a) {
+        var c = tryCatch(t[r], t, o);
+        if ("throw" !== c.type) {
+          var u = c.arg,
+            h = u.value;
+          return h && "object" == typeof h && n.call(h, "__await") ? e.resolve(h.__await).then(function (t) {
+            invoke("next", t, i, a);
+          }, function (t) {
+            invoke("throw", t, i, a);
+          }) : e.resolve(h).then(function (t) {
+            u.value = t, i(u);
+          }, function (t) {
+            return invoke("throw", t, i, a);
+          });
+        }
+        a(c.arg);
+      }
+      var r;
+      o(this, "_invoke", {
+        value: function (t, n) {
+          function callInvokeWithMethodAndArg() {
+            return new e(function (e, r) {
+              invoke(t, n, e, r);
+            });
+          }
+          return r = r ? r.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
+        }
+      });
+    }
+    function makeInvokeMethod(e, r, n) {
+      var o = h;
+      return function (i, a) {
+        if (o === f) throw new Error("Generator is already running");
+        if (o === s) {
+          if ("throw" === i) throw a;
+          return {
+            value: t,
+            done: !0
+          };
+        }
+        for (n.method = i, n.arg = a;;) {
+          var c = n.delegate;
+          if (c) {
+            var u = maybeInvokeDelegate(c, n);
+            if (u) {
+              if (u === y) continue;
+              return u;
+            }
+          }
+          if ("next" === n.method) n.sent = n._sent = n.arg;else if ("throw" === n.method) {
+            if (o === h) throw o = s, n.arg;
+            n.dispatchException(n.arg);
+          } else "return" === n.method && n.abrupt("return", n.arg);
+          o = f;
+          var p = tryCatch(e, r, n);
+          if ("normal" === p.type) {
+            if (o = n.done ? s : l, p.arg === y) continue;
+            return {
+              value: p.arg,
+              done: n.done
+            };
+          }
+          "throw" === p.type && (o = s, n.method = "throw", n.arg = p.arg);
+        }
+      };
+    }
+    function maybeInvokeDelegate(e, r) {
+      var n = r.method,
+        o = e.iterator[n];
+      if (o === t) return r.delegate = null, "throw" === n && e.iterator.return && (r.method = "return", r.arg = t, maybeInvokeDelegate(e, r), "throw" === r.method) || "return" !== n && (r.method = "throw", r.arg = new TypeError("The iterator does not provide a '" + n + "' method")), y;
+      var i = tryCatch(o, e.iterator, r.arg);
+      if ("throw" === i.type) return r.method = "throw", r.arg = i.arg, r.delegate = null, y;
+      var a = i.arg;
+      return a ? a.done ? (r[e.resultName] = a.value, r.next = e.nextLoc, "return" !== r.method && (r.method = "next", r.arg = t), r.delegate = null, y) : a : (r.method = "throw", r.arg = new TypeError("iterator result is not an object"), r.delegate = null, y);
+    }
+    function pushTryEntry(t) {
+      var e = {
+        tryLoc: t[0]
+      };
+      1 in t && (e.catchLoc = t[1]), 2 in t && (e.finallyLoc = t[2], e.afterLoc = t[3]), this.tryEntries.push(e);
+    }
+    function resetTryEntry(t) {
+      var e = t.completion || {};
+      e.type = "normal", delete e.arg, t.completion = e;
+    }
+    function Context(t) {
+      this.tryEntries = [{
+        tryLoc: "root"
+      }], t.forEach(pushTryEntry, this), this.reset(!0);
+    }
+    function values(e) {
+      if (e || "" === e) {
+        var r = e[a];
+        if (r) return r.call(e);
+        if ("function" == typeof e.next) return e;
+        if (!isNaN(e.length)) {
+          var o = -1,
+            i = function next() {
+              for (; ++o < e.length;) if (n.call(e, o)) return next.value = e[o], next.done = !1, next;
+              return next.value = t, next.done = !0, next;
+            };
+          return i.next = i;
+        }
+      }
+      throw new TypeError(typeof e + " is not iterable");
+    }
+    return GeneratorFunction.prototype = GeneratorFunctionPrototype, o(g, "constructor", {
+      value: GeneratorFunctionPrototype,
+      configurable: !0
+    }), o(GeneratorFunctionPrototype, "constructor", {
+      value: GeneratorFunction,
+      configurable: !0
+    }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, u, "GeneratorFunction"), e.isGeneratorFunction = function (t) {
+      var e = "function" == typeof t && t.constructor;
+      return !!e && (e === GeneratorFunction || "GeneratorFunction" === (e.displayName || e.name));
+    }, e.mark = function (t) {
+      return Object.setPrototypeOf ? Object.setPrototypeOf(t, GeneratorFunctionPrototype) : (t.__proto__ = GeneratorFunctionPrototype, define(t, u, "GeneratorFunction")), t.prototype = Object.create(g), t;
+    }, e.awrap = function (t) {
+      return {
+        __await: t
+      };
+    }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, c, function () {
+      return this;
+    }), e.AsyncIterator = AsyncIterator, e.async = function (t, r, n, o, i) {
+      void 0 === i && (i = Promise);
+      var a = new AsyncIterator(wrap(t, r, n, o), i);
+      return e.isGeneratorFunction(r) ? a : a.next().then(function (t) {
+        return t.done ? t.value : a.next();
+      });
+    }, defineIteratorMethods(g), define(g, u, "Generator"), define(g, a, function () {
+      return this;
+    }), define(g, "toString", function () {
+      return "[object Generator]";
+    }), e.keys = function (t) {
+      var e = Object(t),
+        r = [];
+      for (var n in e) r.push(n);
+      return r.reverse(), function next() {
+        for (; r.length;) {
+          var t = r.pop();
+          if (t in e) return next.value = t, next.done = !1, next;
+        }
+        return next.done = !0, next;
+      };
+    }, e.values = values, Context.prototype = {
+      constructor: Context,
+      reset: function (e) {
+        if (this.prev = 0, this.next = 0, this.sent = this._sent = t, this.done = !1, this.delegate = null, this.method = "next", this.arg = t, this.tryEntries.forEach(resetTryEntry), !e) for (var r in this) "t" === r.charAt(0) && n.call(this, r) && !isNaN(+r.slice(1)) && (this[r] = t);
+      },
+      stop: function () {
+        this.done = !0;
+        var t = this.tryEntries[0].completion;
+        if ("throw" === t.type) throw t.arg;
+        return this.rval;
+      },
+      dispatchException: function (e) {
+        if (this.done) throw e;
+        var r = this;
+        function handle(n, o) {
+          return a.type = "throw", a.arg = e, r.next = n, o && (r.method = "next", r.arg = t), !!o;
+        }
+        for (var o = this.tryEntries.length - 1; o >= 0; --o) {
+          var i = this.tryEntries[o],
+            a = i.completion;
+          if ("root" === i.tryLoc) return handle("end");
+          if (i.tryLoc <= this.prev) {
+            var c = n.call(i, "catchLoc"),
+              u = n.call(i, "finallyLoc");
+            if (c && u) {
+              if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
+              if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
+            } else if (c) {
+              if (this.prev < i.catchLoc) return handle(i.catchLoc, !0);
+            } else {
+              if (!u) throw new Error("try statement without catch or finally");
+              if (this.prev < i.finallyLoc) return handle(i.finallyLoc);
+            }
+          }
+        }
+      },
+      abrupt: function (t, e) {
+        for (var r = this.tryEntries.length - 1; r >= 0; --r) {
+          var o = this.tryEntries[r];
+          if (o.tryLoc <= this.prev && n.call(o, "finallyLoc") && this.prev < o.finallyLoc) {
+            var i = o;
+            break;
+          }
+        }
+        i && ("break" === t || "continue" === t) && i.tryLoc <= e && e <= i.finallyLoc && (i = null);
+        var a = i ? i.completion : {};
+        return a.type = t, a.arg = e, i ? (this.method = "next", this.next = i.finallyLoc, y) : this.complete(a);
+      },
+      complete: function (t, e) {
+        if ("throw" === t.type) throw t.arg;
+        return "break" === t.type || "continue" === t.type ? this.next = t.arg : "return" === t.type ? (this.rval = this.arg = t.arg, this.method = "return", this.next = "end") : "normal" === t.type && e && (this.next = e), y;
+      },
+      finish: function (t) {
+        for (var e = this.tryEntries.length - 1; e >= 0; --e) {
+          var r = this.tryEntries[e];
+          if (r.finallyLoc === t) return this.complete(r.completion, r.afterLoc), resetTryEntry(r), y;
+        }
+      },
+      catch: function (t) {
+        for (var e = this.tryEntries.length - 1; e >= 0; --e) {
+          var r = this.tryEntries[e];
+          if (r.tryLoc === t) {
+            var n = r.completion;
+            if ("throw" === n.type) {
+              var o = n.arg;
+              resetTryEntry(r);
+            }
+            return o;
+          }
+        }
+        throw new Error("illegal catch attempt");
+      },
+      delegateYield: function (e, r, n) {
+        return this.delegate = {
+          iterator: values(e),
+          resultName: r,
+          nextLoc: n
+        }, "next" === this.method && (this.arg = t), y;
+      }
+    }, e;
+  }
+  function _typeof(o) {
+    "@babel/helpers - typeof";
+
+    return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
+      return typeof o;
+    } : function (o) {
+      return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
+    }, _typeof(o);
+  }
+  function _using(o, e, n) {
+    if (null == e) return e;
+    if ("object" != typeof e) throw new TypeError("using declarations can only be used with objects, null, or undefined.");
+    if (n) var r = e[Symbol.asyncDispose || Symbol.for("Symbol.asyncDispose")];
+    if (null == r && (r = e[Symbol.dispose || Symbol.for("Symbol.dispose")]), "function" != typeof r) throw new TypeError("Property [Symbol.dispose] is not a function.");
+    return o.push({
+      v: e,
+      d: r,
+      a: n
+    }), e;
+  }
+  function _wrapRegExp() {
+    _wrapRegExp = function (e, r) {
+      return new BabelRegExp(e, void 0, r);
+    };
+    var e = RegExp.prototype,
+      r = new WeakMap();
+    function BabelRegExp(e, t, p) {
+      var o = new RegExp(e, t);
+      return r.set(o, p || r.get(e)), _setPrototypeOf(o, BabelRegExp.prototype);
+    }
+    function buildGroups(e, t) {
+      var p = r.get(t);
+      return Object.keys(p).reduce(function (r, t) {
+        var o = p[t];
+        if ("number" == typeof o) r[t] = e[o];else {
+          for (var i = 0; void 0 === e[o[i]] && i + 1 < o.length;) i++;
+          r[t] = e[o[i]];
+        }
+        return r;
+      }, Object.create(null));
+    }
+    return _inherits(BabelRegExp, RegExp), BabelRegExp.prototype.exec = function (r) {
+      var t = e.exec.call(this, r);
+      if (t) {
+        t.groups = buildGroups(t, this);
+        var p = t.indices;
+        p && (p.groups = buildGroups(p, this));
+      }
+      return t;
+    }, BabelRegExp.prototype[Symbol.replace] = function (t, p) {
+      if ("string" == typeof p) {
+        var o = r.get(this);
+        return e[Symbol.replace].call(this, t, p.replace(/\$<([^>]+)>/g, function (e, r) {
+          var t = o[r];
+          return "$" + (Array.isArray(t) ? t.join("$") : t);
+        }));
+      }
+      if ("function" == typeof p) {
+        var i = this;
+        return e[Symbol.replace].call(this, t, function () {
+          var e = arguments;
+          return "object" != typeof e[e.length - 1] && (e = [].slice.call(e)).push(buildGroups(e, i)), p.apply(this, e);
+        });
+      }
+      return e[Symbol.replace].call(this, t, p);
+    }, _wrapRegExp.apply(this, arguments);
+  }
+  function _AwaitValue(value) {
+    this.wrapped = value;
+  }
+  function _wrapAsyncGenerator(fn) {
+    return function () {
+      return new _AsyncGenerator(fn.apply(this, arguments));
+    };
+  }
+  function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
+    try {
+      var info = gen[key](arg);
+      var value = info.value;
+    } catch (error) {
+      reject(error);
+      return;
+    }
+    if (info.done) {
+      resolve(value);
+    } else {
+      Promise.resolve(value).then(_next, _throw);
+    }
+  }
+  function _asyncToGenerator(fn) {
+    return function () {
+      var self = this,
+        args = arguments;
+      return new Promise(function (resolve, reject) {
+        var gen = fn.apply(self, args);
+        function _next(value) {
+          asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
+        }
+        function _throw(err) {
+          asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
+        }
+        _next(undefined);
+      });
+    };
+  }
+  function _classCallCheck(instance, Constructor) {
+    if (!(instance instanceof Constructor)) {
+      throw new TypeError("Cannot call a class as a function");
+    }
+  }
+  function _defineProperties(target, props) {
+    for (var i = 0; i < props.length; i++) {
+      var descriptor = props[i];
+      descriptor.enumerable = descriptor.enumerable || false;
+      descriptor.configurable = true;
+      if ("value" in descriptor) descriptor.writable = true;
+      Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);
+    }
+  }
+  function _createClass(Constructor, protoProps, staticProps) {
+    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) _defineProperties(Constructor, staticProps);
+    Object.defineProperty(Constructor, "prototype", {
+      writable: false
+    });
+    return Constructor;
+  }
+  function _defineEnumerableProperties(obj, descs) {
+    for (var key in descs) {
+      var desc = descs[key];
+      desc.configurable = desc.enumerable = true;
+      if ("value" in desc) desc.writable = true;
+      Object.defineProperty(obj, key, desc);
+    }
+    if (Object.getOwnPropertySymbols) {
+      var objectSymbols = Object.getOwnPropertySymbols(descs);
+      for (var i = 0; i < objectSymbols.length; i++) {
+        var sym = objectSymbols[i];
+        var desc = descs[sym];
+        desc.configurable = desc.enumerable = true;
+        if ("value" in desc) desc.writable = true;
+        Object.defineProperty(obj, sym, desc);
+      }
+    }
+    return obj;
+  }
+  function _defaults(obj, defaults) {
+    var keys = Object.getOwnPropertyNames(defaults);
+    for (var i = 0; i < keys.length; i++) {
+      var key = keys[i];
+      var value = Object.getOwnPropertyDescriptor(defaults, key);
+      if (value && value.configurable && obj[key] === undefined) {
+        Object.defineProperty(obj, key, value);
+      }
+    }
+    return obj;
+  }
+  function _defineProperty(obj, key, value) {
+    key = _toPropertyKey(key);
+    if (key in obj) {
+      Object.defineProperty(obj, key, {
+        value: value,
+        enumerable: true,
+        configurable: true,
+        writable: true
+      });
+    } else {
+      obj[key] = value;
+    }
+    return obj;
+  }
+  function _extends() {
+    _extends = Object.assign ? Object.assign.bind() : function (target) {
+      for (var i = 1; i < arguments.length; i++) {
+        var source = arguments[i];
+        for (var key in source) {
+          if (Object.prototype.hasOwnProperty.call(source, key)) {
+            target[key] = source[key];
+          }
+        }
+      }
+      return target;
+    };
+    return _extends.apply(this, arguments);
+  }
+  function _objectSpread(target) {
+    for (var i = 1; i < arguments.length; i++) {
+      var source = arguments[i] != null ? Object(arguments[i]) : {};
+      var ownKeys = Object.keys(source);
+      if (typeof Object.getOwnPropertySymbols === 'function') {
+        ownKeys.push.apply(ownKeys, Object.getOwnPropertySymbols(source).filter(function (sym) {
+          return Object.getOwnPropertyDescriptor(source, sym).enumerable;
+        }));
+      }
+      ownKeys.forEach(function (key) {
+        _defineProperty(target, key, source[key]);
+      });
+    }
+    return target;
+  }
+  function _inherits(subClass, superClass) {
+    if (typeof superClass !== "function" && superClass !== null) {
+      throw new TypeError("Super expression must either be null or a function");
+    }
+    subClass.prototype = Object.create(superClass && superClass.prototype, {
+      constructor: {
+        value: subClass,
+        writable: true,
+        configurable: true
+      }
+    });
+    Object.defineProperty(subClass, "prototype", {
+      writable: false
+    });
+    if (superClass) _setPrototypeOf(subClass, superClass);
+  }
+  function _inheritsLoose(subClass, superClass) {
+    subClass.prototype = Object.create(superClass.prototype);
+    subClass.prototype.constructor = subClass;
+    _setPrototypeOf(subClass, superClass);
+  }
+  function _getPrototypeOf(o) {
+    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) {
+      return o.__proto__ || Object.getPrototypeOf(o);
+    };
+    return _getPrototypeOf(o);
+  }
+  function _setPrototypeOf(o, p) {
+    _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) {
+      o.__proto__ = p;
+      return o;
+    };
+    return _setPrototypeOf(o, p);
+  }
+  function _isNativeReflectConstruct() {
+    if (typeof Reflect === "undefined" || !Reflect.construct) return false;
+    if (Reflect.construct.sham) return false;
+    if (typeof Proxy === "function") return true;
+    try {
+      Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+  function _construct(Parent, args, Class) {
+    if (_isNativeReflectConstruct()) {
+      _construct = Reflect.construct.bind();
+    } else {
+      _construct = function _construct(Parent, args, Class) {
+        var a = [null];
+        a.push.apply(a, args);
+        var Constructor = Function.bind.apply(Parent, a);
+        var instance = new Constructor();
+        if (Class) _setPrototypeOf(instance, Class.prototype);
+        return instance;
+      };
+    }
+    return _construct.apply(null, arguments);
+  }
+  function _isNativeFunction(fn) {
+    return Function.toString.call(fn).indexOf("[native code]") !== -1;
+  }
+  function _wrapNativeSuper(Class) {
+    var _cache = typeof Map === "function" ? new Map() : undefined;
+    _wrapNativeSuper = function _wrapNativeSuper(Class) {
+      if (Class === null || !_isNativeFunction(Class)) return Class;
+      if (typeof Class !== "function") {
+        throw new TypeError("Super expression must either be null or a function");
+      }
+      if (typeof _cache !== "undefined") {
+        if (_cache.has(Class)) return _cache.get(Class);
+        _cache.set(Class, Wrapper);
+      }
+      function Wrapper() {
+        return _construct(Class, arguments, _getPrototypeOf(this).constructor);
+      }
+      Wrapper.prototype = Object.create(Class.prototype, {
+        constructor: {
+          value: Wrapper,
+          enumerable: false,
+          writable: true,
+          configurable: true
+        }
+      });
+      return _setPrototypeOf(Wrapper, Class);
+    };
+    return _wrapNativeSuper(Class);
+  }
+  function _instanceof(left, right) {
+    if (right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance]) {
+      return !!right[Symbol.hasInstance](left);
+    } else {
+      return left instanceof right;
+    }
+  }
+  function _interopRequireDefault(obj) {
+    return obj && obj.__esModule ? obj : {
+      default: obj
+    };
+  }
+  function _getRequireWildcardCache(nodeInterop) {
+    if (typeof WeakMap !== "function") return null;
+    var cacheBabelInterop = new WeakMap();
+    var cacheNodeInterop = new WeakMap();
+    return (_getRequireWildcardCache = function (nodeInterop) {
+      return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
+    })(nodeInterop);
+  }
+  function _interopRequireWildcard(obj, nodeInterop) {
+    if (!nodeInterop && obj && obj.__esModule) {
+      return obj;
+    }
+    if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
+      return {
+        default: obj
+      };
+    }
+    var cache = _getRequireWildcardCache(nodeInterop);
+    if (cache && cache.has(obj)) {
+      return cache.get(obj);
+    }
+    var newObj = {};
+    var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
+    for (var key in obj) {
+      if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) {
+        var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
+        if (desc && (desc.get || desc.set)) {
+          Object.defineProperty(newObj, key, desc);
+        } else {
+          newObj[key] = obj[key];
+        }
+      }
+    }
+    newObj.default = obj;
+    if (cache) {
+      cache.set(obj, newObj);
+    }
+    return newObj;
+  }
+  function _newArrowCheck(innerThis, boundThis) {
+    if (innerThis !== boundThis) {
+      throw new TypeError("Cannot instantiate an arrow function");
+    }
+  }
+  function _objectDestructuringEmpty(obj) {
+    if (obj == null) throw new TypeError("Cannot destructure " + obj);
+  }
+  function _objectWithoutPropertiesLoose(source, excluded) {
+    if (source == null) return {};
+    var target = {};
+    var sourceKeys = Object.keys(source);
+    var key, i;
+    for (i = 0; i < sourceKeys.length; i++) {
+      key = sourceKeys[i];
+      if (excluded.indexOf(key) >= 0) continue;
+      target[key] = source[key];
+    }
+    return target;
+  }
+  function _objectWithoutProperties(source, excluded) {
+    if (source == null) return {};
+    var target = _objectWithoutPropertiesLoose(source, excluded);
+    var key, i;
+    if (Object.getOwnPropertySymbols) {
+      var sourceSymbolKeys = Object.getOwnPropertySymbols(source);
+      for (i = 0; i < sourceSymbolKeys.length; i++) {
+        key = sourceSymbolKeys[i];
+        if (excluded.indexOf(key) >= 0) continue;
+        if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
+        target[key] = source[key];
+      }
+    }
+    return target;
+  }
+  function _assertThisInitialized(self) {
+    if (self === void 0) {
+      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
+    }
+    return self;
+  }
+  function _possibleConstructorReturn(self, call) {
+    if (call && (typeof call === "object" || typeof call === "function")) {
+      return call;
+    } else if (call !== void 0) {
+      throw new TypeError("Derived constructors may only return object or undefined");
+    }
+    return _assertThisInitialized(self);
+  }
+  function _createSuper(Derived) {
+    var hasNativeReflectConstruct = _isNativeReflectConstruct();
+    return function _createSuperInternal() {
+      var Super = _getPrototypeOf(Derived),
+        result;
+      if (hasNativeReflectConstruct) {
+        var NewTarget = _getPrototypeOf(this).constructor;
+        result = Reflect.construct(Super, arguments, NewTarget);
+      } else {
+        result = Super.apply(this, arguments);
+      }
+      return _possibleConstructorReturn(this, result);
+    };
+  }
+  function _superPropBase(object, property) {
+    while (!Object.prototype.hasOwnProperty.call(object, property)) {
+      object = _getPrototypeOf(object);
+      if (object === null) break;
+    }
+    return object;
+  }
+  function _get() {
+    if (typeof Reflect !== "undefined" && Reflect.get) {
+      _get = Reflect.get.bind();
+    } else {
+      _get = function _get(target, property, receiver) {
+        var base = _superPropBase(target, property);
+        if (!base) return;
+        var desc = Object.getOwnPropertyDescriptor(base, property);
+        if (desc.get) {
+          return desc.get.call(arguments.length < 3 ? target : receiver);
+        }
+        return desc.value;
+      };
+    }
+    return _get.apply(this, arguments);
+  }
+  function set(target, property, value, receiver) {
+    if (typeof Reflect !== "undefined" && Reflect.set) {
+      set = Reflect.set;
+    } else {
+      set = function set(target, property, value, receiver) {
+        var base = _superPropBase(target, property);
+        var desc;
+        if (base) {
+          desc = Object.getOwnPropertyDescriptor(base, property);
+          if (desc.set) {
+            desc.set.call(receiver, value);
+            return true;
+          } else if (!desc.writable) {
+            return false;
+          }
+        }
+        desc = Object.getOwnPropertyDescriptor(receiver, property);
+        if (desc) {
+          if (!desc.writable) {
+            return false;
+          }
+          desc.value = value;
+          Object.defineProperty(receiver, property, desc);
+        } else {
+          _defineProperty(receiver, property, value);
+        }
+        return true;
+      };
+    }
+    return set(target, property, value, receiver);
+  }
+  function _set(target, property, value, receiver, isStrict) {
+    var s = set(target, property, value, receiver || target);
+    if (!s && isStrict) {
+      throw new TypeError('failed to set property');
+    }
+    return value;
+  }
+  function _taggedTemplateLiteral(strings, raw) {
+    if (!raw) {
+      raw = strings.slice(0);
+    }
+    return Object.freeze(Object.defineProperties(strings, {
+      raw: {
+        value: Object.freeze(raw)
+      }
+    }));
+  }
+  function _taggedTemplateLiteralLoose(strings, raw) {
+    if (!raw) {
+      raw = strings.slice(0);
+    }
+    strings.raw = raw;
+    return strings;
+  }
+  function _readOnlyError(name) {
+    throw new TypeError("\"" + name + "\" is read-only");
+  }
+  function _writeOnlyError(name) {
+    throw new TypeError("\"" + name + "\" is write-only");
+  }
+  function _classNameTDZError(name) {
+    throw new ReferenceError("Class \"" + name + "\" cannot be referenced in computed property keys.");
+  }
+  function _temporalUndefined() {}
+  function _tdz(name) {
+    throw new ReferenceError(name + " is not defined - temporal dead zone");
+  }
+  function _temporalRef(val, name) {
+    return val === _temporalUndefined ? _tdz(name) : val;
+  }
+  function _slicedToArray(arr, i) {
+    return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
+  }
+  function _slicedToArrayLoose(arr, i) {
+    return _arrayWithHoles(arr) || _iterableToArrayLimitLoose(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
+  }
+  function _toArray(arr) {
+    return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableRest();
+  }
+  function _toConsumableArray(arr) {
+    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
+  }
+  function _arrayWithoutHoles(arr) {
+    if (Array.isArray(arr)) return _arrayLikeToArray(arr);
+  }
+  function _arrayWithHoles(arr) {
+    if (Array.isArray(arr)) return arr;
+  }
+  function _maybeArrayLike(next, arr, i) {
+    if (arr && !Array.isArray(arr) && typeof arr.length === "number") {
+      var len = arr.length;
+      return _arrayLikeToArray(arr, i !== void 0 && i < len ? i : len);
+    }
+    return next(arr, i);
+  }
+  function _iterableToArray(iter) {
+    if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
+  }
+  function _unsupportedIterableToArray(o, minLen) {
+    if (!o) return;
+    if (typeof o === "string") return _arrayLikeToArray(o, minLen);
+    var n = Object.prototype.toString.call(o).slice(8, -1);
+    if (n === "Object" && o.constructor) n = o.constructor.name;
+    if (n === "Map" || n === "Set") return Array.from(o);
+    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
+  }
+  function _arrayLikeToArray(arr, len) {
+    if (len == null || len > arr.length) len = arr.length;
+    for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
+    return arr2;
+  }
+  function _nonIterableSpread() {
+    throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+  }
+  function _nonIterableRest() {
+    throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+  }
+  function _createForOfIteratorHelper(o, allowArrayLike) {
+    var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
+    if (!it) {
+      if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
+        if (it) o = it;
+        var i = 0;
+        var F = function () {};
+        return {
+          s: F,
+          n: function () {
+            if (i >= o.length) return {
+              done: true
+            };
+            return {
+              done: false,
+              value: o[i++]
+            };
+          },
+          e: function (e) {
+            throw e;
+          },
+          f: F
+        };
+      }
+      throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+    }
+    var normalCompletion = true,
+      didErr = false,
+      err;
+    return {
+      s: function () {
+        it = it.call(o);
+      },
+      n: function () {
+        var step = it.next();
+        normalCompletion = step.done;
+        return step;
+      },
+      e: function (e) {
+        didErr = true;
+        err = e;
+      },
+      f: function () {
+        try {
+          if (!normalCompletion && it.return != null) it.return();
+        } finally {
+          if (didErr) throw err;
+        }
+      }
+    };
+  }
+  function _createForOfIteratorHelperLoose(o, allowArrayLike) {
+    var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
+    if (it) return (it = it.call(o)).next.bind(it);
+    if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
+      if (it) o = it;
+      var i = 0;
+      return function () {
+        if (i >= o.length) return {
+          done: true
+        };
+        return {
+          done: false,
+          value: o[i++]
+        };
+      };
+    }
+    throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+  }
+  function _skipFirstGeneratorNext(fn) {
+    return function () {
+      var it = fn.apply(this, arguments);
+      it.next();
+      return it;
+    };
+  }
+  function _toPrimitive(input, hint) {
+    if (typeof input !== "object" || input === null) return input;
+    var prim = input[Symbol.toPrimitive];
+    if (prim !== undefined) {
+      var res = prim.call(input, hint || "default");
+      if (typeof res !== "object") return res;
+      throw new TypeError("@@toPrimitive must return a primitive value.");
+    }
+    return (hint === "string" ? String : Number)(input);
+  }
+  function _toPropertyKey(arg) {
+    var key = _toPrimitive(arg, "string");
+    return typeof key === "symbol" ? key : String(key);
+  }
+  function _initializerWarningHelper(descriptor, context) {
+    throw new Error('Decorating class property failed. Please ensure that ' + 'transform-class-properties is enabled and runs after the decorators transform.');
+  }
+  function _initializerDefineProperty(target, property, descriptor, context) {
+    if (!descriptor) return;
+    Object.defineProperty(target, property, {
+      enumerable: descriptor.enumerable,
+      configurable: descriptor.configurable,
+      writable: descriptor.writable,
+      value: descriptor.initializer ? descriptor.initializer.call(context) : void 0
+    });
+  }
+  function _applyDecoratedDescriptor(target, property, decorators, descriptor, context) {
+    var desc = {};
+    Object.keys(descriptor).forEach(function (key) {
+      desc[key] = descriptor[key];
+    });
+    desc.enumerable = !!desc.enumerable;
+    desc.configurable = !!desc.configurable;
+    if ('value' in desc || desc.initializer) {
+      desc.writable = true;
+    }
+    desc = decorators.slice().reverse().reduce(function (desc, decorator) {
+      return decorator(target, property, desc) || desc;
+    }, desc);
+    if (context && desc.initializer !== void 0) {
+      desc.value = desc.initializer ? desc.initializer.call(context) : void 0;
+      desc.initializer = undefined;
+    }
+    if (desc.initializer === void 0) {
+      Object.defineProperty(target, property, desc);
+      desc = null;
+    }
+    return desc;
+  }
+  var id$1 = 0;
+  function _classPrivateFieldLooseKey(name) {
+    return "__private_" + id$1++ + "_" + name;
+  }
+  function _classPrivateFieldLooseBase(receiver, privateKey) {
+    if (!Object.prototype.hasOwnProperty.call(receiver, privateKey)) {
+      throw new TypeError("attempted to use private field on non-instance");
+    }
+    return receiver;
+  }
+  function _classPrivateFieldGet(receiver, privateMap) {
+    var descriptor = _classExtractFieldDescriptor(receiver, privateMap, "get");
+    return _classApplyDescriptorGet(receiver, descriptor);
+  }
+  function _classPrivateFieldSet(receiver, privateMap, value) {
+    var descriptor = _classExtractFieldDescriptor(receiver, privateMap, "set");
+    _classApplyDescriptorSet(receiver, descriptor, value);
+    return value;
+  }
+  function _classPrivateFieldDestructureSet(receiver, privateMap) {
+    var descriptor = _classExtractFieldDescriptor(receiver, privateMap, "set");
+    return _classApplyDescriptorDestructureSet(receiver, descriptor);
+  }
+  function _classExtractFieldDescriptor(receiver, privateMap, action) {
+    if (!privateMap.has(receiver)) {
+      throw new TypeError("attempted to " + action + " private field on non-instance");
+    }
+    return privateMap.get(receiver);
+  }
+  function _classStaticPrivateFieldSpecGet(receiver, classConstructor, descriptor) {
+    _classCheckPrivateStaticAccess(receiver, classConstructor);
+    _classCheckPrivateStaticFieldDescriptor(descriptor, "get");
+    return _classApplyDescriptorGet(receiver, descriptor);
+  }
+  function _classStaticPrivateFieldSpecSet(receiver, classConstructor, descriptor, value) {
+    _classCheckPrivateStaticAccess(receiver, classConstructor);
+    _classCheckPrivateStaticFieldDescriptor(descriptor, "set");
+    _classApplyDescriptorSet(receiver, descriptor, value);
+    return value;
+  }
+  function _classStaticPrivateMethodGet(receiver, classConstructor, method) {
+    _classCheckPrivateStaticAccess(receiver, classConstructor);
+    return method;
+  }
+  function _classStaticPrivateMethodSet() {
+    throw new TypeError("attempted to set read only static private field");
+  }
+  function _classApplyDescriptorGet(receiver, descriptor) {
+    if (descriptor.get) {
+      return descriptor.get.call(receiver);
+    }
+    return descriptor.value;
+  }
+  function _classApplyDescriptorSet(receiver, descriptor, value) {
+    if (descriptor.set) {
+      descriptor.set.call(receiver, value);
+    } else {
+      if (!descriptor.writable) {
+        throw new TypeError("attempted to set read only private field");
+      }
+      descriptor.value = value;
+    }
+  }
+  function _classApplyDescriptorDestructureSet(receiver, descriptor) {
+    if (descriptor.set) {
+      if (!("__destrObj" in descriptor)) {
+        descriptor.__destrObj = {
+          set value(v) {
+            descriptor.set.call(receiver, v);
+          }
+        };
+      }
+      return descriptor.__destrObj;
+    } else {
+      if (!descriptor.writable) {
+        throw new TypeError("attempted to set read only private field");
+      }
+      return descriptor;
+    }
+  }
+  function _classStaticPrivateFieldDestructureSet(receiver, classConstructor, descriptor) {
+    _classCheckPrivateStaticAccess(receiver, classConstructor);
+    _classCheckPrivateStaticFieldDescriptor(descriptor, "set");
+    return _classApplyDescriptorDestructureSet(receiver, descriptor);
+  }
+  function _classCheckPrivateStaticAccess(receiver, classConstructor) {
+    if (receiver !== classConstructor) {
+      throw new TypeError("Private static access of wrong provenance");
+    }
+  }
+  function _classCheckPrivateStaticFieldDescriptor(descriptor, action) {
+    if (descriptor === undefined) {
+      throw new TypeError("attempted to " + action + " private static field before its declaration");
+    }
+  }
+  function _decorate(decorators, factory, superClass, mixins) {
+    var api = _getDecoratorsApi();
+    if (mixins) {
+      for (var i = 0; i < mixins.length; i++) {
+        api = mixins[i](api);
+      }
+    }
+    var r = factory(function initialize(O) {
+      api.initializeInstanceElements(O, decorated.elements);
+    }, superClass);
+    var decorated = api.decorateClass(_coalesceClassElements(r.d.map(_createElementDescriptor)), decorators);
+    api.initializeClassElements(r.F, decorated.elements);
+    return api.runClassFinishers(r.F, decorated.finishers);
+  }
+  function _getDecoratorsApi() {
+    _getDecoratorsApi = function () {
+      return api;
+    };
+    var api = {
+      elementsDefinitionOrder: [["method"], ["field"]],
+      initializeInstanceElements: function (O, elements) {
+        ["method", "field"].forEach(function (kind) {
+          elements.forEach(function (element) {
+            if (element.kind === kind && element.placement === "own") {
+              this.defineClassElement(O, element);
+            }
+          }, this);
+        }, this);
+      },
+      initializeClassElements: function (F, elements) {
+        var proto = F.prototype;
+        ["method", "field"].forEach(function (kind) {
+          elements.forEach(function (element) {
+            var placement = element.placement;
+            if (element.kind === kind && (placement === "static" || placement === "prototype")) {
+              var receiver = placement === "static" ? F : proto;
+              this.defineClassElement(receiver, element);
+            }
+          }, this);
+        }, this);
+      },
+      defineClassElement: function (receiver, element) {
+        var descriptor = element.descriptor;
+        if (element.kind === "field") {
+          var initializer = element.initializer;
+          descriptor = {
+            enumerable: descriptor.enumerable,
+            writable: descriptor.writable,
+            configurable: descriptor.configurable,
+            value: initializer === void 0 ? void 0 : initializer.call(receiver)
+          };
+        }
+        Object.defineProperty(receiver, element.key, descriptor);
+      },
+      decorateClass: function (elements, decorators) {
+        var newElements = [];
+        var finishers = [];
+        var placements = {
+          static: [],
+          prototype: [],
+          own: []
+        };
+        elements.forEach(function (element) {
+          this.addElementPlacement(element, placements);
+        }, this);
+        elements.forEach(function (element) {
+          if (!_hasDecorators(element)) return newElements.push(element);
+          var elementFinishersExtras = this.decorateElement(element, placements);
+          newElements.push(elementFinishersExtras.element);
+          newElements.push.apply(newElements, elementFinishersExtras.extras);
+          finishers.push.apply(finishers, elementFinishersExtras.finishers);
+        }, this);
+        if (!decorators) {
+          return {
+            elements: newElements,
+            finishers: finishers
+          };
+        }
+        var result = this.decorateConstructor(newElements, decorators);
+        finishers.push.apply(finishers, result.finishers);
+        result.finishers = finishers;
+        return result;
+      },
+      addElementPlacement: function (element, placements, silent) {
+        var keys = placements[element.placement];
+        if (!silent && keys.indexOf(element.key) !== -1) {
+          throw new TypeError("Duplicated element (" + element.key + ")");
+        }
+        keys.push(element.key);
+      },
+      decorateElement: function (element, placements) {
+        var extras = [];
+        var finishers = [];
+        for (var decorators = element.decorators, i = decorators.length - 1; i >= 0; i--) {
+          var keys = placements[element.placement];
+          keys.splice(keys.indexOf(element.key), 1);
+          var elementObject = this.fromElementDescriptor(element);
+          var elementFinisherExtras = this.toElementFinisherExtras((0, decorators[i])(elementObject) || elementObject);
+          element = elementFinisherExtras.element;
+          this.addElementPlacement(element, placements);
+          if (elementFinisherExtras.finisher) {
+            finishers.push(elementFinisherExtras.finisher);
+          }
+          var newExtras = elementFinisherExtras.extras;
+          if (newExtras) {
+            for (var j = 0; j < newExtras.length; j++) {
+              this.addElementPlacement(newExtras[j], placements);
+            }
+            extras.push.apply(extras, newExtras);
+          }
+        }
+        return {
+          element: element,
+          finishers: finishers,
+          extras: extras
+        };
+      },
+      decorateConstructor: function (elements, decorators) {
+        var finishers = [];
+        for (var i = decorators.length - 1; i >= 0; i--) {
+          var obj = this.fromClassDescriptor(elements);
+          var elementsAndFinisher = this.toClassDescriptor((0, decorators[i])(obj) || obj);
+          if (elementsAndFinisher.finisher !== undefined) {
+            finishers.push(elementsAndFinisher.finisher);
+          }
+          if (elementsAndFinisher.elements !== undefined) {
+            elements = elementsAndFinisher.elements;
+            for (var j = 0; j < elements.length - 1; j++) {
+              for (var k = j + 1; k < elements.length; k++) {
+                if (elements[j].key === elements[k].key && elements[j].placement === elements[k].placement) {
+                  throw new TypeError("Duplicated element (" + elements[j].key + ")");
+                }
+              }
+            }
+          }
+        }
+        return {
+          elements: elements,
+          finishers: finishers
+        };
+      },
+      fromElementDescriptor: function (element) {
+        var obj = {
+          kind: element.kind,
+          key: element.key,
+          placement: element.placement,
+          descriptor: element.descriptor
+        };
+        var desc = {
+          value: "Descriptor",
+          configurable: true
+        };
+        Object.defineProperty(obj, Symbol.toStringTag, desc);
+        if (element.kind === "field") obj.initializer = element.initializer;
+        return obj;
+      },
+      toElementDescriptors: function (elementObjects) {
+        if (elementObjects === undefined) return;
+        return _toArray(elementObjects).map(function (elementObject) {
+          var element = this.toElementDescriptor(elementObject);
+          this.disallowProperty(elementObject, "finisher", "An element descriptor");
+          this.disallowProperty(elementObject, "extras", "An element descriptor");
+          return element;
+        }, this);
+      },
+      toElementDescriptor: function (elementObject) {
+        var kind = String(elementObject.kind);
+        if (kind !== "method" && kind !== "field") {
+          throw new TypeError('An element descriptor\'s .kind property must be either "method" or' + ' "field", but a decorator created an element descriptor with' + ' .kind "' + kind + '"');
+        }
+        var key = _toPropertyKey(elementObject.key);
+        var placement = String(elementObject.placement);
+        if (placement !== "static" && placement !== "prototype" && placement !== "own") {
+          throw new TypeError('An element descriptor\'s .placement property must be one of "static",' + ' "prototype" or "own", but a decorator created an element descriptor' + ' with .placement "' + placement + '"');
+        }
+        var descriptor = elementObject.descriptor;
+        this.disallowProperty(elementObject, "elements", "An element descriptor");
+        var element = {
+          kind: kind,
+          key: key,
+          placement: placement,
+          descriptor: Object.assign({}, descriptor)
+        };
+        if (kind !== "field") {
+          this.disallowProperty(elementObject, "initializer", "A method descriptor");
+        } else {
+          this.disallowProperty(descriptor, "get", "The property descriptor of a field descriptor");
+          this.disallowProperty(descriptor, "set", "The property descriptor of a field descriptor");
+          this.disallowProperty(descriptor, "value", "The property descriptor of a field descriptor");
+          element.initializer = elementObject.initializer;
+        }
+        return element;
+      },
+      toElementFinisherExtras: function (elementObject) {
+        var element = this.toElementDescriptor(elementObject);
+        var finisher = _optionalCallableProperty(elementObject, "finisher");
+        var extras = this.toElementDescriptors(elementObject.extras);
+        return {
+          element: element,
+          finisher: finisher,
+          extras: extras
+        };
+      },
+      fromClassDescriptor: function (elements) {
+        var obj = {
+          kind: "class",
+          elements: elements.map(this.fromElementDescriptor, this)
+        };
+        var desc = {
+          value: "Descriptor",
+          configurable: true
+        };
+        Object.defineProperty(obj, Symbol.toStringTag, desc);
+        return obj;
+      },
+      toClassDescriptor: function (obj) {
+        var kind = String(obj.kind);
+        if (kind !== "class") {
+          throw new TypeError('A class descriptor\'s .kind property must be "class", but a decorator' + ' created a class descriptor with .kind "' + kind + '"');
+        }
+        this.disallowProperty(obj, "key", "A class descriptor");
+        this.disallowProperty(obj, "placement", "A class descriptor");
+        this.disallowProperty(obj, "descriptor", "A class descriptor");
+        this.disallowProperty(obj, "initializer", "A class descriptor");
+        this.disallowProperty(obj, "extras", "A class descriptor");
+        var finisher = _optionalCallableProperty(obj, "finisher");
+        var elements = this.toElementDescriptors(obj.elements);
+        return {
+          elements: elements,
+          finisher: finisher
+        };
+      },
+      runClassFinishers: function (constructor, finishers) {
+        for (var i = 0; i < finishers.length; i++) {
+          var newConstructor = (0, finishers[i])(constructor);
+          if (newConstructor !== undefined) {
+            if (typeof newConstructor !== "function") {
+              throw new TypeError("Finishers must return a constructor.");
+            }
+            constructor = newConstructor;
+          }
+        }
+        return constructor;
+      },
+      disallowProperty: function (obj, name, objectType) {
+        if (obj[name] !== undefined) {
+          throw new TypeError(objectType + " can't have a ." + name + " property.");
+        }
+      }
+    };
+    return api;
+  }
+  function _createElementDescriptor(def) {
+    var key = _toPropertyKey(def.key);
+    var descriptor;
+    if (def.kind === "method") {
+      descriptor = {
+        value: def.value,
+        writable: true,
+        configurable: true,
+        enumerable: false
+      };
+    } else if (def.kind === "get") {
+      descriptor = {
+        get: def.value,
+        configurable: true,
+        enumerable: false
+      };
+    } else if (def.kind === "set") {
+      descriptor = {
+        set: def.value,
+        configurable: true,
+        enumerable: false
+      };
+    } else if (def.kind === "field") {
+      descriptor = {
+        configurable: true,
+        writable: true,
+        enumerable: true
+      };
+    }
+    var element = {
+      kind: def.kind === "field" ? "field" : "method",
+      key: key,
+      placement: def.static ? "static" : def.kind === "field" ? "own" : "prototype",
+      descriptor: descriptor
+    };
+    if (def.decorators) element.decorators = def.decorators;
+    if (def.kind === "field") element.initializer = def.value;
+    return element;
+  }
+  function _coalesceGetterSetter(element, other) {
+    if (element.descriptor.get !== undefined) {
+      other.descriptor.get = element.descriptor.get;
+    } else {
+      other.descriptor.set = element.descriptor.set;
+    }
+  }
+  function _coalesceClassElements(elements) {
+    var newElements = [];
+    var isSameElement = function (other) {
+      return other.kind === "method" && other.key === element.key && other.placement === element.placement;
+    };
+    for (var i = 0; i < elements.length; i++) {
+      var element = elements[i];
+      var other;
+      if (element.kind === "method" && (other = newElements.find(isSameElement))) {
+        if (_isDataDescriptor(element.descriptor) || _isDataDescriptor(other.descriptor)) {
+          if (_hasDecorators(element) || _hasDecorators(other)) {
+            throw new ReferenceError("Duplicated methods (" + element.key + ") can't be decorated.");
+          }
+          other.descriptor = element.descriptor;
+        } else {
+          if (_hasDecorators(element)) {
+            if (_hasDecorators(other)) {
+              throw new ReferenceError("Decorators can't be placed on different accessors with for " + "the same property (" + element.key + ").");
+            }
+            other.decorators = element.decorators;
+          }
+          _coalesceGetterSetter(element, other);
+        }
+      } else {
+        newElements.push(element);
+      }
+    }
+    return newElements;
+  }
+  function _hasDecorators(element) {
+    return element.decorators && element.decorators.length;
+  }
+  function _isDataDescriptor(desc) {
+    return desc !== undefined && !(desc.value === undefined && desc.writable === undefined);
+  }
+  function _optionalCallableProperty(obj, name) {
+    var value = obj[name];
+    if (value !== undefined && typeof value !== "function") {
+      throw new TypeError("Expected '" + name + "' to be a function");
+    }
+    return value;
+  }
+  function _classPrivateMethodGet(receiver, privateSet, fn) {
+    if (!privateSet.has(receiver)) {
+      throw new TypeError("attempted to get private field on non-instance");
+    }
+    return fn;
+  }
+  function _checkPrivateRedeclaration(obj, privateCollection) {
+    if (privateCollection.has(obj)) {
+      throw new TypeError("Cannot initialize the same private elements twice on an object");
+    }
+  }
+  function _classPrivateFieldInitSpec(obj, privateMap, value) {
+    _checkPrivateRedeclaration(obj, privateMap);
+    privateMap.set(obj, value);
+  }
+  function _classPrivateMethodInitSpec(obj, privateSet) {
+    _checkPrivateRedeclaration(obj, privateSet);
+    privateSet.add(obj);
+  }
+  function _classPrivateMethodSet() {
+    throw new TypeError("attempted to reassign private method");
+  }
+  function _identity(x) {
+    return x;
+  }
+  function _nullishReceiverError(r) {
+    throw new TypeError("Cannot set property of null or undefined.");
+  }
+
+  class Piece extends TrixObject {
+    static registerType(type, constructor) {
+      constructor.type = type;
+      this.types[type] = constructor;
+    }
+    static fromJSON(pieceJSON) {
+      const constructor = this.types[pieceJSON.type];
+      if (constructor) {
+        return constructor.fromJSON(pieceJSON);
+      }
+    }
+    constructor(value) {
+      let attributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      super(...arguments);
+      this.attributes = Hash.box(attributes);
+    }
+    copyWithAttributes(attributes) {
+      return new this.constructor(this.getValue(), attributes);
+    }
+    copyWithAdditionalAttributes(attributes) {
+      return this.copyWithAttributes(this.attributes.merge(attributes));
+    }
+    copyWithoutAttribute(attribute) {
+      return this.copyWithAttributes(this.attributes.remove(attribute));
+    }
+    copy() {
+      return this.copyWithAttributes(this.attributes);
+    }
+    getAttribute(attribute) {
+      return this.attributes.get(attribute);
+    }
+    getAttributesHash() {
+      return this.attributes;
+    }
+    getAttributes() {
+      return this.attributes.toObject();
+    }
+    hasAttribute(attribute) {
+      return this.attributes.has(attribute);
+    }
+    hasSameStringValueAsPiece(piece) {
+      return piece && this.toString() === piece.toString();
+    }
+    hasSameAttributesAsPiece(piece) {
+      return piece && (this.attributes === piece.attributes || this.attributes.isEqualTo(piece.attributes));
+    }
+    isBlockBreak() {
+      return false;
+    }
+    isEqualTo(piece) {
+      return super.isEqualTo(...arguments) || this.hasSameConstructorAs(piece) && this.hasSameStringValueAsPiece(piece) && this.hasSameAttributesAsPiece(piece);
+    }
+    isEmpty() {
+      return this.length === 0;
+    }
+    isSerializable() {
+      return true;
+    }
+    toJSON() {
+      return {
+        type: this.constructor.type,
+        attributes: this.getAttributes()
+      };
+    }
+    contentsForInspection() {
+      return {
+        type: this.constructor.type,
+        attributes: this.attributes.inspect()
+      };
+    }
+
+    // Grouping
+
+    canBeGrouped() {
+      return this.hasAttribute("href");
+    }
+    canBeGroupedWith(piece) {
+      return this.getAttribute("href") === piece.getAttribute("href");
+    }
+
+    // Splittable
+
+    getLength() {
+      return this.length;
+    }
+    canBeConsolidatedWith(piece) {
+      return false;
+    }
+  }
+  _defineProperty(Piece, "types", {});
+
+  class ImagePreloadOperation extends Operation {
+    constructor(url) {
+      super(...arguments);
+      this.url = url;
+    }
+    perform(callback) {
+      const image = new Image();
+      image.onload = () => {
+        image.width = this.width = image.naturalWidth;
+        image.height = this.height = image.naturalHeight;
+        return callback(true, image);
+      };
+      image.onerror = () => callback(false);
+      image.src = this.url;
+    }
+  }
+
+  class Attachment extends TrixObject {
+    static attachmentForFile(file) {
+      const attributes = this.attributesForFile(file);
+      const attachment = new this(attributes);
+      attachment.setFile(file);
+      return attachment;
+    }
+    static attributesForFile(file) {
+      return new Hash({
+        filename: file.name,
+        filesize: file.size,
+        contentType: file.type
+      });
+    }
+    static fromJSON(attachmentJSON) {
+      return new this(attachmentJSON);
+    }
+    constructor() {
+      let attributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      super(attributes);
+      this.releaseFile = this.releaseFile.bind(this);
+      this.attributes = Hash.box(attributes);
+      this.didChangeAttributes();
+    }
+    getAttribute(attribute) {
+      return this.attributes.get(attribute);
+    }
+    hasAttribute(attribute) {
+      return this.attributes.has(attribute);
+    }
+    getAttributes() {
+      return this.attributes.toObject();
+    }
+    setAttributes() {
+      let attributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      const newAttributes = this.attributes.merge(attributes);
+      if (!this.attributes.isEqualTo(newAttributes)) {
+        var _this$previewDelegate, _this$previewDelegate2, _this$delegate, _this$delegate$attach;
+        this.attributes = newAttributes;
+        this.didChangeAttributes();
+        (_this$previewDelegate = this.previewDelegate) === null || _this$previewDelegate === void 0 || (_this$previewDelegate2 = _this$previewDelegate.attachmentDidChangeAttributes) === null || _this$previewDelegate2 === void 0 || _this$previewDelegate2.call(_this$previewDelegate, this);
+        return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$attach = _this$delegate.attachmentDidChangeAttributes) === null || _this$delegate$attach === void 0 ? void 0 : _this$delegate$attach.call(_this$delegate, this);
+      }
+    }
+    didChangeAttributes() {
+      if (this.isPreviewable()) {
+        return this.preloadURL();
+      }
+    }
+    isPending() {
+      return this.file != null && !(this.getURL() || this.getHref());
+    }
+    isPreviewable() {
+      if (this.attributes.has("previewable")) {
+        return this.attributes.get("previewable");
+      } else {
+        return Attachment.previewablePattern.test(this.getContentType());
+      }
+    }
+    getType() {
+      if (this.hasContent()) {
+        return "content";
+      } else if (this.isPreviewable()) {
+        return "preview";
+      } else {
+        return "file";
+      }
+    }
+    getURL() {
+      return this.attributes.get("url");
+    }
+    getHref() {
+      return this.attributes.get("href");
+    }
+    getFilename() {
+      return this.attributes.get("filename") || "";
+    }
+    getFilesize() {
+      return this.attributes.get("filesize");
+    }
+    getFormattedFilesize() {
+      const filesize = this.attributes.get("filesize");
+      if (typeof filesize === "number") {
+        return file_size_formatting.formatter(filesize);
+      } else {
+        return "";
+      }
+    }
+    getExtension() {
+      var _this$getFilename$mat;
+      return (_this$getFilename$mat = this.getFilename().match(/\.(\w+)$/)) === null || _this$getFilename$mat === void 0 ? void 0 : _this$getFilename$mat[1].toLowerCase();
+    }
+    getContentType() {
+      return this.attributes.get("contentType");
+    }
+    hasContent() {
+      return this.attributes.has("content");
+    }
+    getContent() {
+      return this.attributes.get("content");
+    }
+    getWidth() {
+      return this.attributes.get("width");
+    }
+    getHeight() {
+      return this.attributes.get("height");
+    }
+    getFile() {
+      return this.file;
+    }
+    setFile(file) {
+      this.file = file;
+      if (this.isPreviewable()) {
+        return this.preloadFile();
+      }
+    }
+    releaseFile() {
+      this.releasePreloadedFile();
+      this.file = null;
+    }
+    getUploadProgress() {
+      return this.uploadProgress != null ? this.uploadProgress : 0;
+    }
+    setUploadProgress(value) {
+      if (this.uploadProgress !== value) {
+        var _this$uploadProgressD, _this$uploadProgressD2;
+        this.uploadProgress = value;
+        return (_this$uploadProgressD = this.uploadProgressDelegate) === null || _this$uploadProgressD === void 0 || (_this$uploadProgressD2 = _this$uploadProgressD.attachmentDidChangeUploadProgress) === null || _this$uploadProgressD2 === void 0 ? void 0 : _this$uploadProgressD2.call(_this$uploadProgressD, this);
+      }
+    }
+    toJSON() {
+      return this.getAttributes();
+    }
+    getCacheKey() {
+      return [super.getCacheKey(...arguments), this.attributes.getCacheKey(), this.getPreviewURL()].join("/");
+    }
+
+    // Previewable
+
+    getPreviewURL() {
+      return this.previewURL || this.preloadingURL;
+    }
+    setPreviewURL(url) {
+      if (url !== this.getPreviewURL()) {
+        var _this$previewDelegate3, _this$previewDelegate4, _this$delegate2, _this$delegate2$attac;
+        this.previewURL = url;
+        (_this$previewDelegate3 = this.previewDelegate) === null || _this$previewDelegate3 === void 0 || (_this$previewDelegate4 = _this$previewDelegate3.attachmentDidChangeAttributes) === null || _this$previewDelegate4 === void 0 || _this$previewDelegate4.call(_this$previewDelegate3, this);
+        return (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || (_this$delegate2$attac = _this$delegate2.attachmentDidChangePreviewURL) === null || _this$delegate2$attac === void 0 ? void 0 : _this$delegate2$attac.call(_this$delegate2, this);
+      }
+    }
+    preloadURL() {
+      return this.preload(this.getURL(), this.releaseFile);
+    }
+    preloadFile() {
+      if (this.file) {
+        this.fileObjectURL = URL.createObjectURL(this.file);
+        return this.preload(this.fileObjectURL);
+      }
+    }
+    releasePreloadedFile() {
+      if (this.fileObjectURL) {
+        URL.revokeObjectURL(this.fileObjectURL);
+        this.fileObjectURL = null;
+      }
+    }
+    preload(url, callback) {
+      if (url && url !== this.getPreviewURL()) {
+        this.preloadingURL = url;
+        const operation = new ImagePreloadOperation(url);
+        return operation.then(_ref => {
+          let {
+            width,
+            height
+          } = _ref;
+          if (!this.getWidth() || !this.getHeight()) {
+            this.setAttributes({
+              width,
+              height
+            });
+          }
+          this.preloadingURL = null;
+          this.setPreviewURL(url);
+          return callback === null || callback === void 0 ? void 0 : callback();
+        }).catch(() => {
+          this.preloadingURL = null;
+          return callback === null || callback === void 0 ? void 0 : callback();
+        });
+      }
+    }
+  }
+  _defineProperty(Attachment, "previewablePattern", /^image(\/(gif|png|webp|jpe?g)|$)/);
+
+  class AttachmentPiece extends Piece {
+    static fromJSON(pieceJSON) {
+      return new this(Attachment.fromJSON(pieceJSON.attachment), pieceJSON.attributes);
+    }
+    constructor(attachment) {
+      super(...arguments);
+      this.attachment = attachment;
+      this.length = 1;
+      this.ensureAttachmentExclusivelyHasAttribute("href");
+      if (!this.attachment.hasContent()) {
+        this.removeProhibitedAttributes();
+      }
+    }
+    ensureAttachmentExclusivelyHasAttribute(attribute) {
+      if (this.hasAttribute(attribute)) {
+        if (!this.attachment.hasAttribute(attribute)) {
+          this.attachment.setAttributes(this.attributes.slice([attribute]));
+        }
+        this.attributes = this.attributes.remove(attribute);
+      }
+    }
+    removeProhibitedAttributes() {
+      const attributes = this.attributes.slice(AttachmentPiece.permittedAttributes);
+      if (!attributes.isEqualTo(this.attributes)) {
+        this.attributes = attributes;
+      }
+    }
+    getValue() {
+      return this.attachment;
+    }
+    isSerializable() {
+      return !this.attachment.isPending();
+    }
+    getCaption() {
+      return this.attributes.get("caption") || "";
+    }
+    isEqualTo(piece) {
+      var _piece$attachment;
+      return super.isEqualTo(piece) && this.attachment.id === (piece === null || piece === void 0 || (_piece$attachment = piece.attachment) === null || _piece$attachment === void 0 ? void 0 : _piece$attachment.id);
+    }
+    toString() {
+      return OBJECT_REPLACEMENT_CHARACTER;
+    }
+    toJSON() {
+      const json = super.toJSON(...arguments);
+      json.attachment = this.attachment;
+      return json;
+    }
+    getCacheKey() {
+      return [super.getCacheKey(...arguments), this.attachment.getCacheKey()].join("/");
+    }
+    toConsole() {
+      return JSON.stringify(this.toString());
+    }
+  }
+  _defineProperty(AttachmentPiece, "permittedAttributes", ["caption", "presentation"]);
+  Piece.registerType("attachment", AttachmentPiece);
+
+  class StringPiece extends Piece {
+    static fromJSON(pieceJSON) {
+      return new this(pieceJSON.string, pieceJSON.attributes);
+    }
+    constructor(string) {
+      super(...arguments);
+      this.string = normalizeNewlines(string);
+      this.length = this.string.length;
+    }
+    getValue() {
+      return this.string;
+    }
+    toString() {
+      return this.string.toString();
+    }
+    isBlockBreak() {
+      return this.toString() === "\n" && this.getAttribute("blockBreak") === true;
+    }
+    toJSON() {
+      const result = super.toJSON(...arguments);
+      result.string = this.string;
+      return result;
+    }
+
+    // Splittable
+
+    canBeConsolidatedWith(piece) {
+      return piece && this.hasSameConstructorAs(piece) && this.hasSameAttributesAsPiece(piece);
+    }
+    consolidateWith(piece) {
+      return new this.constructor(this.toString() + piece.toString(), this.attributes);
+    }
+    splitAtOffset(offset) {
+      let left, right;
+      if (offset === 0) {
+        left = null;
+        right = this;
+      } else if (offset === this.length) {
+        left = this;
+        right = null;
+      } else {
+        left = new this.constructor(this.string.slice(0, offset), this.attributes);
+        right = new this.constructor(this.string.slice(offset), this.attributes);
+      }
+      return [left, right];
+    }
+    toConsole() {
+      let {
+        string
+      } = this;
+      if (string.length > 15) {
+        string = string.slice(0, 14) + "…";
+      }
+      return JSON.stringify(string.toString());
+    }
+  }
+  Piece.registerType("string", StringPiece);
+
+  /* eslint-disable
+      prefer-const,
+  */
+  class SplittableList extends TrixObject {
+    static box(objects) {
+      if (objects instanceof this) {
+        return objects;
+      } else {
+        return new this(objects);
+      }
+    }
+    constructor() {
+      let objects = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      super(...arguments);
+      this.objects = objects.slice(0);
+      this.length = this.objects.length;
+    }
+    indexOf(object) {
+      return this.objects.indexOf(object);
+    }
+    splice() {
+      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+        args[_key] = arguments[_key];
+      }
+      return new this.constructor(spliceArray(this.objects, ...args));
+    }
+    eachObject(callback) {
+      return this.objects.map((object, index) => callback(object, index));
+    }
+    insertObjectAtIndex(object, index) {
+      return this.splice(index, 0, object);
+    }
+    insertSplittableListAtIndex(splittableList, index) {
+      return this.splice(index, 0, ...splittableList.objects);
+    }
+    insertSplittableListAtPosition(splittableList, position) {
+      const [objects, index] = this.splitObjectAtPosition(position);
+      return new this.constructor(objects).insertSplittableListAtIndex(splittableList, index);
+    }
+    editObjectAtIndex(index, callback) {
+      return this.replaceObjectAtIndex(callback(this.objects[index]), index);
+    }
+    replaceObjectAtIndex(object, index) {
+      return this.splice(index, 1, object);
+    }
+    removeObjectAtIndex(index) {
+      return this.splice(index, 1);
+    }
+    getObjectAtIndex(index) {
+      return this.objects[index];
+    }
+    getSplittableListInRange(range) {
+      const [objects, leftIndex, rightIndex] = this.splitObjectsAtRange(range);
+      return new this.constructor(objects.slice(leftIndex, rightIndex + 1));
+    }
+    selectSplittableList(test) {
+      const objects = this.objects.filter(object => test(object));
+      return new this.constructor(objects);
+    }
+    removeObjectsInRange(range) {
+      const [objects, leftIndex, rightIndex] = this.splitObjectsAtRange(range);
+      return new this.constructor(objects).splice(leftIndex, rightIndex - leftIndex + 1);
+    }
+    transformObjectsInRange(range, transform) {
+      const [objects, leftIndex, rightIndex] = this.splitObjectsAtRange(range);
+      const transformedObjects = objects.map((object, index) => leftIndex <= index && index <= rightIndex ? transform(object) : object);
+      return new this.constructor(transformedObjects);
+    }
+    splitObjectsAtRange(range) {
+      let rightOuterIndex;
+      let [objects, leftInnerIndex, offset] = this.splitObjectAtPosition(startOfRange(range));
+      [objects, rightOuterIndex] = new this.constructor(objects).splitObjectAtPosition(endOfRange(range) + offset);
+      return [objects, leftInnerIndex, rightOuterIndex - 1];
+    }
+    getObjectAtPosition(position) {
+      const {
+        index
+      } = this.findIndexAndOffsetAtPosition(position);
+      return this.objects[index];
+    }
+    splitObjectAtPosition(position) {
+      let splitIndex, splitOffset;
+      const {
+        index,
+        offset
+      } = this.findIndexAndOffsetAtPosition(position);
+      const objects = this.objects.slice(0);
+      if (index != null) {
+        if (offset === 0) {
+          splitIndex = index;
+          splitOffset = 0;
+        } else {
+          const object = this.getObjectAtIndex(index);
+          const [leftObject, rightObject] = object.splitAtOffset(offset);
+          objects.splice(index, 1, leftObject, rightObject);
+          splitIndex = index + 1;
+          splitOffset = leftObject.getLength() - offset;
+        }
+      } else {
+        splitIndex = objects.length;
+        splitOffset = 0;
+      }
+      return [objects, splitIndex, splitOffset];
+    }
+    consolidate() {
+      const objects = [];
+      let pendingObject = this.objects[0];
+      this.objects.slice(1).forEach(object => {
+        var _pendingObject$canBeC, _pendingObject;
+        if ((_pendingObject$canBeC = (_pendingObject = pendingObject).canBeConsolidatedWith) !== null && _pendingObject$canBeC !== void 0 && _pendingObject$canBeC.call(_pendingObject, object)) {
+          pendingObject = pendingObject.consolidateWith(object);
+        } else {
+          objects.push(pendingObject);
+          pendingObject = object;
+        }
+      });
+      if (pendingObject) {
+        objects.push(pendingObject);
+      }
+      return new this.constructor(objects);
+    }
+    consolidateFromIndexToIndex(startIndex, endIndex) {
+      const objects = this.objects.slice(0);
+      const objectsInRange = objects.slice(startIndex, endIndex + 1);
+      const consolidatedInRange = new this.constructor(objectsInRange).consolidate().toArray();
+      return this.splice(startIndex, objectsInRange.length, ...consolidatedInRange);
+    }
+    findIndexAndOffsetAtPosition(position) {
+      let index;
+      let currentPosition = 0;
+      for (index = 0; index < this.objects.length; index++) {
+        const object = this.objects[index];
+        const nextPosition = currentPosition + object.getLength();
+        if (currentPosition <= position && position < nextPosition) {
+          return {
+            index,
+            offset: position - currentPosition
+          };
+        }
+        currentPosition = nextPosition;
+      }
+      return {
+        index: null,
+        offset: null
+      };
+    }
+    findPositionAtIndexAndOffset(index, offset) {
+      let position = 0;
+      for (let currentIndex = 0; currentIndex < this.objects.length; currentIndex++) {
+        const object = this.objects[currentIndex];
+        if (currentIndex < index) {
+          position += object.getLength();
+        } else if (currentIndex === index) {
+          position += offset;
+          break;
+        }
+      }
+      return position;
+    }
+    getEndPosition() {
+      if (this.endPosition == null) {
+        this.endPosition = 0;
+        this.objects.forEach(object => this.endPosition += object.getLength());
+      }
+      return this.endPosition;
+    }
+    toString() {
+      return this.objects.join("");
+    }
+    toArray() {
+      return this.objects.slice(0);
+    }
+    toJSON() {
+      return this.toArray();
+    }
+    isEqualTo(splittableList) {
+      return super.isEqualTo(...arguments) || objectArraysAreEqual(this.objects, splittableList === null || splittableList === void 0 ? void 0 : splittableList.objects);
+    }
+    contentsForInspection() {
+      return {
+        objects: "[".concat(this.objects.map(object => object.inspect()).join(", "), "]")
+      };
+    }
+  }
+  const objectArraysAreEqual = function (left) {
+    let right = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
+    if (left.length !== right.length) {
+      return false;
+    }
+    let result = true;
+    for (let index = 0; index < left.length; index++) {
+      const object = left[index];
+      if (result && !object.isEqualTo(right[index])) {
+        result = false;
+      }
+    }
+    return result;
+  };
+  const startOfRange = range => range[0];
+  const endOfRange = range => range[1];
+
+  class Text extends TrixObject {
+    static textForAttachmentWithAttributes(attachment, attributes) {
+      const piece = new AttachmentPiece(attachment, attributes);
+      return new this([piece]);
+    }
+    static textForStringWithAttributes(string, attributes) {
+      const piece = new StringPiece(string, attributes);
+      return new this([piece]);
+    }
+    static fromJSON(textJSON) {
+      const pieces = Array.from(textJSON).map(pieceJSON => Piece.fromJSON(pieceJSON));
+      return new this(pieces);
+    }
+    constructor() {
+      let pieces = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      super(...arguments);
+      const notEmpty = pieces.filter(piece => !piece.isEmpty());
+      this.pieceList = new SplittableList(notEmpty);
+    }
+    copy() {
+      return this.copyWithPieceList(this.pieceList);
+    }
+    copyWithPieceList(pieceList) {
+      return new this.constructor(pieceList.consolidate().toArray());
+    }
+    copyUsingObjectMap(objectMap) {
+      const pieces = this.getPieces().map(piece => objectMap.find(piece) || piece);
+      return new this.constructor(pieces);
+    }
+    appendText(text) {
+      return this.insertTextAtPosition(text, this.getLength());
+    }
+    insertTextAtPosition(text, position) {
+      return this.copyWithPieceList(this.pieceList.insertSplittableListAtPosition(text.pieceList, position));
+    }
+    removeTextAtRange(range) {
+      return this.copyWithPieceList(this.pieceList.removeObjectsInRange(range));
+    }
+    replaceTextAtRange(text, range) {
+      return this.removeTextAtRange(range).insertTextAtPosition(text, range[0]);
+    }
+    moveTextFromRangeToPosition(range, position) {
+      if (range[0] <= position && position <= range[1]) return;
+      const text = this.getTextAtRange(range);
+      const length = text.getLength();
+      if (range[0] < position) {
+        position -= length;
+      }
+      return this.removeTextAtRange(range).insertTextAtPosition(text, position);
+    }
+    addAttributeAtRange(attribute, value, range) {
+      const attributes = {};
+      attributes[attribute] = value;
+      return this.addAttributesAtRange(attributes, range);
+    }
+    addAttributesAtRange(attributes, range) {
+      return this.copyWithPieceList(this.pieceList.transformObjectsInRange(range, piece => piece.copyWithAdditionalAttributes(attributes)));
+    }
+    removeAttributeAtRange(attribute, range) {
+      return this.copyWithPieceList(this.pieceList.transformObjectsInRange(range, piece => piece.copyWithoutAttribute(attribute)));
+    }
+    setAttributesAtRange(attributes, range) {
+      return this.copyWithPieceList(this.pieceList.transformObjectsInRange(range, piece => piece.copyWithAttributes(attributes)));
+    }
+    getAttributesAtPosition(position) {
+      var _this$pieceList$getOb;
+      return ((_this$pieceList$getOb = this.pieceList.getObjectAtPosition(position)) === null || _this$pieceList$getOb === void 0 ? void 0 : _this$pieceList$getOb.getAttributes()) || {};
+    }
+    getCommonAttributes() {
+      const objects = Array.from(this.pieceList.toArray()).map(piece => piece.getAttributes());
+      return Hash.fromCommonAttributesOfObjects(objects).toObject();
+    }
+    getCommonAttributesAtRange(range) {
+      return this.getTextAtRange(range).getCommonAttributes() || {};
+    }
+    getExpandedRangeForAttributeAtOffset(attributeName, offset) {
+      let right;
+      let left = right = offset;
+      const length = this.getLength();
+      while (left > 0 && this.getCommonAttributesAtRange([left - 1, right])[attributeName]) {
+        left--;
+      }
+      while (right < length && this.getCommonAttributesAtRange([offset, right + 1])[attributeName]) {
+        right++;
+      }
+      return [left, right];
+    }
+    getTextAtRange(range) {
+      return this.copyWithPieceList(this.pieceList.getSplittableListInRange(range));
+    }
+    getStringAtRange(range) {
+      return this.pieceList.getSplittableListInRange(range).toString();
+    }
+    getStringAtPosition(position) {
+      return this.getStringAtRange([position, position + 1]);
+    }
+    startsWithString(string) {
+      return this.getStringAtRange([0, string.length]) === string;
+    }
+    endsWithString(string) {
+      const length = this.getLength();
+      return this.getStringAtRange([length - string.length, length]) === string;
+    }
+    getAttachmentPieces() {
+      return this.pieceList.toArray().filter(piece => !!piece.attachment);
+    }
+    getAttachments() {
+      return this.getAttachmentPieces().map(piece => piece.attachment);
+    }
+    getAttachmentAndPositionById(attachmentId) {
+      let position = 0;
+      for (const piece of this.pieceList.toArray()) {
+        var _piece$attachment;
+        if (((_piece$attachment = piece.attachment) === null || _piece$attachment === void 0 ? void 0 : _piece$attachment.id) === attachmentId) {
+          return {
+            attachment: piece.attachment,
+            position
+          };
+        }
+        position += piece.length;
+      }
+      return {
+        attachment: null,
+        position: null
+      };
+    }
+    getAttachmentById(attachmentId) {
+      const {
+        attachment
+      } = this.getAttachmentAndPositionById(attachmentId);
+      return attachment;
+    }
+    getRangeOfAttachment(attachment) {
+      const attachmentAndPosition = this.getAttachmentAndPositionById(attachment.id);
+      const position = attachmentAndPosition.position;
+      attachment = attachmentAndPosition.attachment;
+      if (attachment) {
+        return [position, position + 1];
+      }
+    }
+    updateAttributesForAttachment(attributes, attachment) {
+      const range = this.getRangeOfAttachment(attachment);
+      if (range) {
+        return this.addAttributesAtRange(attributes, range);
+      } else {
+        return this;
+      }
+    }
+    getLength() {
+      return this.pieceList.getEndPosition();
+    }
+    isEmpty() {
+      return this.getLength() === 0;
+    }
+    isEqualTo(text) {
+      var _text$pieceList;
+      return super.isEqualTo(text) || (text === null || text === void 0 || (_text$pieceList = text.pieceList) === null || _text$pieceList === void 0 ? void 0 : _text$pieceList.isEqualTo(this.pieceList));
+    }
+    isBlockBreak() {
+      return this.getLength() === 1 && this.pieceList.getObjectAtIndex(0).isBlockBreak();
+    }
+    eachPiece(callback) {
+      return this.pieceList.eachObject(callback);
+    }
+    getPieces() {
+      return this.pieceList.toArray();
+    }
+    getPieceAtPosition(position) {
+      return this.pieceList.getObjectAtPosition(position);
+    }
+    contentsForInspection() {
+      return {
+        pieceList: this.pieceList.inspect()
+      };
+    }
+    toSerializableText() {
+      const pieceList = this.pieceList.selectSplittableList(piece => piece.isSerializable());
+      return this.copyWithPieceList(pieceList);
+    }
+    toString() {
+      return this.pieceList.toString();
+    }
+    toJSON() {
+      return this.pieceList.toJSON();
+    }
+    toConsole() {
+      return JSON.stringify(this.pieceList.toArray().map(piece => JSON.parse(piece.toConsole())));
+    }
+
+    // BIDI
+
+    getDirection() {
+      return getDirection(this.toString());
+    }
+    isRTL() {
+      return this.getDirection() === "rtl";
+    }
+  }
+
+  class Block extends TrixObject {
+    static fromJSON(blockJSON) {
+      const text = Text.fromJSON(blockJSON.text);
+      return new this(text, blockJSON.attributes, blockJSON.htmlAttributes);
+    }
+    constructor(text, attributes, htmlAttributes) {
+      super(...arguments);
+      this.text = applyBlockBreakToText(text || new Text());
+      this.attributes = attributes || [];
+      this.htmlAttributes = htmlAttributes || {};
+    }
+    isEmpty() {
+      return this.text.isBlockBreak();
+    }
+    isEqualTo(block) {
+      if (super.isEqualTo(block)) return true;
+      return this.text.isEqualTo(block === null || block === void 0 ? void 0 : block.text) && arraysAreEqual(this.attributes, block === null || block === void 0 ? void 0 : block.attributes) && objectsAreEqual(this.htmlAttributes, block === null || block === void 0 ? void 0 : block.htmlAttributes);
+    }
+    copyWithText(text) {
+      return new Block(text, this.attributes, this.htmlAttributes);
+    }
+    copyWithoutText() {
+      return this.copyWithText(null);
+    }
+    copyWithAttributes(attributes) {
+      return new Block(this.text, attributes, this.htmlAttributes);
+    }
+    copyWithoutAttributes() {
+      return this.copyWithAttributes(null);
+    }
+    copyUsingObjectMap(objectMap) {
+      const mappedText = objectMap.find(this.text);
+      if (mappedText) {
+        return this.copyWithText(mappedText);
+      } else {
+        return this.copyWithText(this.text.copyUsingObjectMap(objectMap));
+      }
+    }
+    addAttribute(attribute) {
+      const attributes = this.attributes.concat(expandAttribute(attribute));
+      return this.copyWithAttributes(attributes);
+    }
+    addHTMLAttribute(attribute, value) {
+      const htmlAttributes = Object.assign({}, this.htmlAttributes, {
+        [attribute]: value
+      });
+      return new Block(this.text, this.attributes, htmlAttributes);
+    }
+    removeAttribute(attribute) {
+      const {
+        listAttribute
+      } = getBlockConfig(attribute);
+      const attributes = removeLastValue(removeLastValue(this.attributes, attribute), listAttribute);
+      return this.copyWithAttributes(attributes);
+    }
+    removeLastAttribute() {
+      return this.removeAttribute(this.getLastAttribute());
+    }
+    getLastAttribute() {
+      return getLastElement(this.attributes);
+    }
+    getAttributes() {
+      return this.attributes.slice(0);
+    }
+    getAttributeLevel() {
+      return this.attributes.length;
+    }
+    getAttributeAtLevel(level) {
+      return this.attributes[level - 1];
+    }
+    hasAttribute(attributeName) {
+      return this.attributes.includes(attributeName);
+    }
+    hasAttributes() {
+      return this.getAttributeLevel() > 0;
+    }
+    getLastNestableAttribute() {
+      return getLastElement(this.getNestableAttributes());
+    }
+    getNestableAttributes() {
+      return this.attributes.filter(attribute => getBlockConfig(attribute).nestable);
+    }
+    getNestingLevel() {
+      return this.getNestableAttributes().length;
+    }
+    decreaseNestingLevel() {
+      const attribute = this.getLastNestableAttribute();
+      if (attribute) {
+        return this.removeAttribute(attribute);
+      } else {
+        return this;
+      }
+    }
+    increaseNestingLevel() {
+      const attribute = this.getLastNestableAttribute();
+      if (attribute) {
+        const index = this.attributes.lastIndexOf(attribute);
+        const attributes = spliceArray(this.attributes, index + 1, 0, ...expandAttribute(attribute));
+        return this.copyWithAttributes(attributes);
+      } else {
+        return this;
+      }
+    }
+    getListItemAttributes() {
+      return this.attributes.filter(attribute => getBlockConfig(attribute).listAttribute);
+    }
+    isListItem() {
+      var _getBlockConfig;
+      return (_getBlockConfig = getBlockConfig(this.getLastAttribute())) === null || _getBlockConfig === void 0 ? void 0 : _getBlockConfig.listAttribute;
+    }
+    isTerminalBlock() {
+      var _getBlockConfig2;
+      return (_getBlockConfig2 = getBlockConfig(this.getLastAttribute())) === null || _getBlockConfig2 === void 0 ? void 0 : _getBlockConfig2.terminal;
+    }
+    breaksOnReturn() {
+      var _getBlockConfig3;
+      return (_getBlockConfig3 = getBlockConfig(this.getLastAttribute())) === null || _getBlockConfig3 === void 0 ? void 0 : _getBlockConfig3.breakOnReturn;
+    }
+    findLineBreakInDirectionFromPosition(direction, position) {
+      const string = this.toString();
+      let result;
+      switch (direction) {
+        case "forward":
+          result = string.indexOf("\n", position);
+          break;
+        case "backward":
+          result = string.slice(0, position).lastIndexOf("\n");
+      }
+      if (result !== -1) {
+        return result;
+      }
+    }
+    contentsForInspection() {
+      return {
+        text: this.text.inspect(),
+        attributes: this.attributes
+      };
+    }
+    toString() {
+      return this.text.toString();
+    }
+    toJSON() {
+      return {
+        text: this.text,
+        attributes: this.attributes,
+        htmlAttributes: this.htmlAttributes
+      };
+    }
+
+    // BIDI
+
+    getDirection() {
+      return this.text.getDirection();
+    }
+    isRTL() {
+      return this.text.isRTL();
+    }
+
+    // Splittable
+
+    getLength() {
+      return this.text.getLength();
+    }
+    canBeConsolidatedWith(block) {
+      return !this.hasAttributes() && !block.hasAttributes() && this.getDirection() === block.getDirection();
+    }
+    consolidateWith(block) {
+      const newlineText = Text.textForStringWithAttributes("\n");
+      const text = this.getTextWithoutBlockBreak().appendText(newlineText);
+      return this.copyWithText(text.appendText(block.text));
+    }
+    splitAtOffset(offset) {
+      let left, right;
+      if (offset === 0) {
+        left = null;
+        right = this;
+      } else if (offset === this.getLength()) {
+        left = this;
+        right = null;
+      } else {
+        left = this.copyWithText(this.text.getTextAtRange([0, offset]));
+        right = this.copyWithText(this.text.getTextAtRange([offset, this.getLength()]));
+      }
+      return [left, right];
+    }
+    getBlockBreakPosition() {
+      return this.text.getLength() - 1;
+    }
+    getTextWithoutBlockBreak() {
+      if (textEndsInBlockBreak(this.text)) {
+        return this.text.getTextAtRange([0, this.getBlockBreakPosition()]);
+      } else {
+        return this.text.copy();
+      }
+    }
+
+    // Grouping
+
+    canBeGrouped(depth) {
+      return this.attributes[depth];
+    }
+    canBeGroupedWith(otherBlock, depth) {
+      const otherAttributes = otherBlock.getAttributes();
+      const otherAttribute = otherAttributes[depth];
+      const attribute = this.attributes[depth];
+      return attribute === otherAttribute && !(getBlockConfig(attribute).group === false && !getListAttributeNames().includes(otherAttributes[depth + 1])) && (this.getDirection() === otherBlock.getDirection() || otherBlock.isEmpty());
+    }
+  }
+
+  // Block breaks
+
+  const applyBlockBreakToText = function (text) {
+    text = unmarkExistingInnerBlockBreaksInText(text);
+    text = addBlockBreakToText(text);
+    return text;
+  };
+  const unmarkExistingInnerBlockBreaksInText = function (text) {
+    let modified = false;
+    const pieces = text.getPieces();
+    let innerPieces = pieces.slice(0, pieces.length - 1);
+    const lastPiece = pieces[pieces.length - 1];
+    if (!lastPiece) return text;
+    innerPieces = innerPieces.map(piece => {
+      if (piece.isBlockBreak()) {
+        modified = true;
+        return unmarkBlockBreakPiece(piece);
+      } else {
+        return piece;
+      }
+    });
+    if (modified) {
+      return new Text([...innerPieces, lastPiece]);
+    } else {
+      return text;
+    }
+  };
+  const blockBreakText = Text.textForStringWithAttributes("\n", {
+    blockBreak: true
+  });
+  const addBlockBreakToText = function (text) {
+    if (textEndsInBlockBreak(text)) {
+      return text;
+    } else {
+      return text.appendText(blockBreakText);
+    }
+  };
+  const textEndsInBlockBreak = function (text) {
+    const length = text.getLength();
+    if (length === 0) {
+      return false;
+    }
+    const endText = text.getTextAtRange([length - 1, length]);
+    return endText.isBlockBreak();
+  };
+  const unmarkBlockBreakPiece = piece => piece.copyWithoutAttribute("blockBreak");
+
+  // Attributes
+
+  const expandAttribute = function (attribute) {
+    const {
+      listAttribute
+    } = getBlockConfig(attribute);
+    if (listAttribute) {
+      return [listAttribute, attribute];
+    } else {
+      return [attribute];
+    }
+  };
+
+  // Array helpers
+
+  const getLastElement = array => array.slice(-1)[0];
+  const removeLastValue = function (array, value) {
+    const index = array.lastIndexOf(value);
+    if (index === -1) {
+      return array;
+    } else {
+      return spliceArray(array, index, 1);
+    }
+  };
+
+  class Document extends TrixObject {
+    static fromJSON(documentJSON) {
+      const blocks = Array.from(documentJSON).map(blockJSON => Block.fromJSON(blockJSON));
+      return new this(blocks);
+    }
+    static fromString(string, textAttributes) {
+      const text = Text.textForStringWithAttributes(string, textAttributes);
+      return new this([new Block(text)]);
+    }
+    constructor() {
+      let blocks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      super(...arguments);
+      if (blocks.length === 0) {
+        blocks = [new Block()];
+      }
+      this.blockList = SplittableList.box(blocks);
+    }
+    isEmpty() {
+      const block = this.getBlockAtIndex(0);
+      return this.blockList.length === 1 && block.isEmpty() && !block.hasAttributes();
+    }
+    copy() {
+      let options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      const blocks = options.consolidateBlocks ? this.blockList.consolidate().toArray() : this.blockList.toArray();
+      return new this.constructor(blocks);
+    }
+    copyUsingObjectsFromDocument(sourceDocument) {
+      const objectMap = new ObjectMap(sourceDocument.getObjects());
+      return this.copyUsingObjectMap(objectMap);
+    }
+    copyUsingObjectMap(objectMap) {
+      const blocks = this.getBlocks().map(block => {
+        const mappedBlock = objectMap.find(block);
+        return mappedBlock || block.copyUsingObjectMap(objectMap);
+      });
+      return new this.constructor(blocks);
+    }
+    copyWithBaseBlockAttributes() {
+      let blockAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      const blocks = this.getBlocks().map(block => {
+        const attributes = blockAttributes.concat(block.getAttributes());
+        return block.copyWithAttributes(attributes);
+      });
+      return new this.constructor(blocks);
+    }
+    replaceBlock(oldBlock, newBlock) {
+      const index = this.blockList.indexOf(oldBlock);
+      if (index === -1) {
+        return this;
+      }
+      return new this.constructor(this.blockList.replaceObjectAtIndex(newBlock, index));
+    }
+    insertDocumentAtRange(document, range) {
+      const {
+        blockList
+      } = document;
+      range = normalizeRange(range);
+      let [position] = range;
+      const {
+        index,
+        offset
+      } = this.locationFromPosition(position);
+      let result = this;
+      const block = this.getBlockAtPosition(position);
+      if (rangeIsCollapsed(range) && block.isEmpty() && !block.hasAttributes()) {
+        result = new this.constructor(result.blockList.removeObjectAtIndex(index));
+      } else if (block.getBlockBreakPosition() === offset) {
+        position++;
+      }
+      result = result.removeTextAtRange(range);
+      return new this.constructor(result.blockList.insertSplittableListAtPosition(blockList, position));
+    }
+    mergeDocumentAtRange(document, range) {
+      let formattedDocument, result;
+      range = normalizeRange(range);
+      const [startPosition] = range;
+      const startLocation = this.locationFromPosition(startPosition);
+      const blockAttributes = this.getBlockAtIndex(startLocation.index).getAttributes();
+      const baseBlockAttributes = document.getBaseBlockAttributes();
+      const trailingBlockAttributes = blockAttributes.slice(-baseBlockAttributes.length);
+      if (arraysAreEqual(baseBlockAttributes, trailingBlockAttributes)) {
+        const leadingBlockAttributes = blockAttributes.slice(0, -baseBlockAttributes.length);
+        formattedDocument = document.copyWithBaseBlockAttributes(leadingBlockAttributes);
+      } else {
+        formattedDocument = document.copy({
+          consolidateBlocks: true
+        }).copyWithBaseBlockAttributes(blockAttributes);
+      }
+      const blockCount = formattedDocument.getBlockCount();
+      const firstBlock = formattedDocument.getBlockAtIndex(0);
+      if (arraysAreEqual(blockAttributes, firstBlock.getAttributes())) {
+        const firstText = firstBlock.getTextWithoutBlockBreak();
+        result = this.insertTextAtRange(firstText, range);
+        if (blockCount > 1) {
+          formattedDocument = new this.constructor(formattedDocument.getBlocks().slice(1));
+          const position = startPosition + firstText.getLength();
+          result = result.insertDocumentAtRange(formattedDocument, position);
+        }
+      } else {
+        result = this.insertDocumentAtRange(formattedDocument, range);
+      }
+      return result;
+    }
+    insertTextAtRange(text, range) {
+      range = normalizeRange(range);
+      const [startPosition] = range;
+      const {
+        index,
+        offset
+      } = this.locationFromPosition(startPosition);
+      const document = this.removeTextAtRange(range);
+      return new this.constructor(document.blockList.editObjectAtIndex(index, block => block.copyWithText(block.text.insertTextAtPosition(text, offset))));
+    }
+    removeTextAtRange(range) {
+      let blocks;
+      range = normalizeRange(range);
+      const [leftPosition, rightPosition] = range;
+      if (rangeIsCollapsed(range)) {
+        return this;
+      }
+      const [leftLocation, rightLocation] = Array.from(this.locationRangeFromRange(range));
+      const leftIndex = leftLocation.index;
+      const leftOffset = leftLocation.offset;
+      const leftBlock = this.getBlockAtIndex(leftIndex);
+      const rightIndex = rightLocation.index;
+      const rightOffset = rightLocation.offset;
+      const rightBlock = this.getBlockAtIndex(rightIndex);
+      const removeRightNewline = rightPosition - leftPosition === 1 && leftBlock.getBlockBreakPosition() === leftOffset && rightBlock.getBlockBreakPosition() !== rightOffset && rightBlock.text.getStringAtPosition(rightOffset) === "\n";
+      if (removeRightNewline) {
+        blocks = this.blockList.editObjectAtIndex(rightIndex, block => block.copyWithText(block.text.removeTextAtRange([rightOffset, rightOffset + 1])));
+      } else {
+        let block;
+        const leftText = leftBlock.text.getTextAtRange([0, leftOffset]);
+        const rightText = rightBlock.text.getTextAtRange([rightOffset, rightBlock.getLength()]);
+        const text = leftText.appendText(rightText);
+        const removingLeftBlock = leftIndex !== rightIndex && leftOffset === 0;
+        const useRightBlock = removingLeftBlock && leftBlock.getAttributeLevel() >= rightBlock.getAttributeLevel();
+        if (useRightBlock) {
+          block = rightBlock.copyWithText(text);
+        } else {
+          block = leftBlock.copyWithText(text);
+        }
+        const affectedBlockCount = rightIndex + 1 - leftIndex;
+        blocks = this.blockList.splice(leftIndex, affectedBlockCount, block);
+      }
+      return new this.constructor(blocks);
+    }
+    moveTextFromRangeToPosition(range, position) {
+      let text;
+      range = normalizeRange(range);
+      const [startPosition, endPosition] = range;
+      if (startPosition <= position && position <= endPosition) {
+        return this;
+      }
+      let document = this.getDocumentAtRange(range);
+      let result = this.removeTextAtRange(range);
+      const movingRightward = startPosition < position;
+      if (movingRightward) {
+        position -= document.getLength();
+      }
+      const [firstBlock, ...blocks] = document.getBlocks();
+      if (blocks.length === 0) {
+        text = firstBlock.getTextWithoutBlockBreak();
+        if (movingRightward) {
+          position += 1;
+        }
+      } else {
+        text = firstBlock.text;
+      }
+      result = result.insertTextAtRange(text, position);
+      if (blocks.length === 0) {
+        return result;
+      }
+      document = new this.constructor(blocks);
+      position += text.getLength();
+      return result.insertDocumentAtRange(document, position);
+    }
+    addAttributeAtRange(attribute, value, range) {
+      let {
+        blockList
+      } = this;
+      this.eachBlockAtRange(range, (block, textRange, index) => blockList = blockList.editObjectAtIndex(index, function () {
+        if (getBlockConfig(attribute)) {
+          return block.addAttribute(attribute, value);
+        } else {
+          if (textRange[0] === textRange[1]) {
+            return block;
+          } else {
+            return block.copyWithText(block.text.addAttributeAtRange(attribute, value, textRange));
+          }
+        }
+      }));
+      return new this.constructor(blockList);
+    }
+    addAttribute(attribute, value) {
+      let {
+        blockList
+      } = this;
+      this.eachBlock((block, index) => blockList = blockList.editObjectAtIndex(index, () => block.addAttribute(attribute, value)));
+      return new this.constructor(blockList);
+    }
+    removeAttributeAtRange(attribute, range) {
+      let {
+        blockList
+      } = this;
+      this.eachBlockAtRange(range, function (block, textRange, index) {
+        if (getBlockConfig(attribute)) {
+          blockList = blockList.editObjectAtIndex(index, () => block.removeAttribute(attribute));
+        } else if (textRange[0] !== textRange[1]) {
+          blockList = blockList.editObjectAtIndex(index, () => block.copyWithText(block.text.removeAttributeAtRange(attribute, textRange)));
+        }
+      });
+      return new this.constructor(blockList);
+    }
+    updateAttributesForAttachment(attributes, attachment) {
+      const range = this.getRangeOfAttachment(attachment);
+      const [startPosition] = Array.from(range);
+      const {
+        index
+      } = this.locationFromPosition(startPosition);
+      const text = this.getTextAtIndex(index);
+      return new this.constructor(this.blockList.editObjectAtIndex(index, block => block.copyWithText(text.updateAttributesForAttachment(attributes, attachment))));
+    }
+    removeAttributeForAttachment(attribute, attachment) {
+      const range = this.getRangeOfAttachment(attachment);
+      return this.removeAttributeAtRange(attribute, range);
+    }
+    setHTMLAttributeAtPosition(position, name, value) {
+      const block = this.getBlockAtPosition(position);
+      const updatedBlock = block.addHTMLAttribute(name, value);
+      return this.replaceBlock(block, updatedBlock);
+    }
+    insertBlockBreakAtRange(range) {
+      let blocks;
+      range = normalizeRange(range);
+      const [startPosition] = range;
+      const {
+        offset
+      } = this.locationFromPosition(startPosition);
+      const document = this.removeTextAtRange(range);
+      if (offset === 0) {
+        blocks = [new Block()];
+      }
+      return new this.constructor(document.blockList.insertSplittableListAtPosition(new SplittableList(blocks), startPosition));
+    }
+    applyBlockAttributeAtRange(attributeName, value, range) {
+      const expanded = this.expandRangeToLineBreaksAndSplitBlocks(range);
+      let document = expanded.document;
+      range = expanded.range;
+      const blockConfig = getBlockConfig(attributeName);
+      if (blockConfig.listAttribute) {
+        document = document.removeLastListAttributeAtRange(range, {
+          exceptAttributeName: attributeName
+        });
+        const converted = document.convertLineBreaksToBlockBreaksInRange(range);
+        document = converted.document;
+        range = converted.range;
+      } else if (blockConfig.exclusive) {
+        document = document.removeBlockAttributesAtRange(range);
+      } else if (blockConfig.terminal) {
+        document = document.removeLastTerminalAttributeAtRange(range);
+      } else {
+        document = document.consolidateBlocksAtRange(range);
+      }
+      return document.addAttributeAtRange(attributeName, value, range);
+    }
+    removeLastListAttributeAtRange(range) {
+      let options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let {
+        blockList
+      } = this;
+      this.eachBlockAtRange(range, function (block, textRange, index) {
+        const lastAttributeName = block.getLastAttribute();
+        if (!lastAttributeName) {
+          return;
+        }
+        if (!getBlockConfig(lastAttributeName).listAttribute) {
+          return;
+        }
+        if (lastAttributeName === options.exceptAttributeName) {
+          return;
+        }
+        blockList = blockList.editObjectAtIndex(index, () => block.removeAttribute(lastAttributeName));
+      });
+      return new this.constructor(blockList);
+    }
+    removeLastTerminalAttributeAtRange(range) {
+      let {
+        blockList
+      } = this;
+      this.eachBlockAtRange(range, function (block, textRange, index) {
+        const lastAttributeName = block.getLastAttribute();
+        if (!lastAttributeName) {
+          return;
+        }
+        if (!getBlockConfig(lastAttributeName).terminal) {
+          return;
+        }
+        blockList = blockList.editObjectAtIndex(index, () => block.removeAttribute(lastAttributeName));
+      });
+      return new this.constructor(blockList);
+    }
+    removeBlockAttributesAtRange(range) {
+      let {
+        blockList
+      } = this;
+      this.eachBlockAtRange(range, function (block, textRange, index) {
+        if (block.hasAttributes()) {
+          blockList = blockList.editObjectAtIndex(index, () => block.copyWithoutAttributes());
+        }
+      });
+      return new this.constructor(blockList);
+    }
+    expandRangeToLineBreaksAndSplitBlocks(range) {
+      let position;
+      range = normalizeRange(range);
+      let [startPosition, endPosition] = range;
+      const startLocation = this.locationFromPosition(startPosition);
+      const endLocation = this.locationFromPosition(endPosition);
+      let document = this;
+      const startBlock = document.getBlockAtIndex(startLocation.index);
+      startLocation.offset = startBlock.findLineBreakInDirectionFromPosition("backward", startLocation.offset);
+      if (startLocation.offset != null) {
+        position = document.positionFromLocation(startLocation);
+        document = document.insertBlockBreakAtRange([position, position + 1]);
+        endLocation.index += 1;
+        endLocation.offset -= document.getBlockAtIndex(startLocation.index).getLength();
+        startLocation.index += 1;
+      }
+      startLocation.offset = 0;
+      if (endLocation.offset === 0 && endLocation.index > startLocation.index) {
+        endLocation.index -= 1;
+        endLocation.offset = document.getBlockAtIndex(endLocation.index).getBlockBreakPosition();
+      } else {
+        const endBlock = document.getBlockAtIndex(endLocation.index);
+        if (endBlock.text.getStringAtRange([endLocation.offset - 1, endLocation.offset]) === "\n") {
+          endLocation.offset -= 1;
+        } else {
+          endLocation.offset = endBlock.findLineBreakInDirectionFromPosition("forward", endLocation.offset);
+        }
+        if (endLocation.offset !== endBlock.getBlockBreakPosition()) {
+          position = document.positionFromLocation(endLocation);
+          document = document.insertBlockBreakAtRange([position, position + 1]);
+        }
+      }
+      startPosition = document.positionFromLocation(startLocation);
+      endPosition = document.positionFromLocation(endLocation);
+      range = normalizeRange([startPosition, endPosition]);
+      return {
+        document,
+        range
+      };
+    }
+    convertLineBreaksToBlockBreaksInRange(range) {
+      range = normalizeRange(range);
+      let [position] = range;
+      const string = this.getStringAtRange(range).slice(0, -1);
+      let document = this;
+      string.replace(/.*?\n/g, function (match) {
+        position += match.length;
+        document = document.insertBlockBreakAtRange([position - 1, position]);
+      });
+      return {
+        document,
+        range
+      };
+    }
+    consolidateBlocksAtRange(range) {
+      range = normalizeRange(range);
+      const [startPosition, endPosition] = range;
+      const startIndex = this.locationFromPosition(startPosition).index;
+      const endIndex = this.locationFromPosition(endPosition).index;
+      return new this.constructor(this.blockList.consolidateFromIndexToIndex(startIndex, endIndex));
+    }
+    getDocumentAtRange(range) {
+      range = normalizeRange(range);
+      const blocks = this.blockList.getSplittableListInRange(range).toArray();
+      return new this.constructor(blocks);
+    }
+    getStringAtRange(range) {
+      let endIndex;
+      const array = range = normalizeRange(range),
+        endPosition = array[array.length - 1];
+      if (endPosition !== this.getLength()) {
+        endIndex = -1;
+      }
+      return this.getDocumentAtRange(range).toString().slice(0, endIndex);
+    }
+    getBlockAtIndex(index) {
+      return this.blockList.getObjectAtIndex(index);
+    }
+    getBlockAtPosition(position) {
+      const {
+        index
+      } = this.locationFromPosition(position);
+      return this.getBlockAtIndex(index);
+    }
+    getTextAtIndex(index) {
+      var _this$getBlockAtIndex;
+      return (_this$getBlockAtIndex = this.getBlockAtIndex(index)) === null || _this$getBlockAtIndex === void 0 ? void 0 : _this$getBlockAtIndex.text;
+    }
+    getTextAtPosition(position) {
+      const {
+        index
+      } = this.locationFromPosition(position);
+      return this.getTextAtIndex(index);
+    }
+    getPieceAtPosition(position) {
+      const {
+        index,
+        offset
+      } = this.locationFromPosition(position);
+      return this.getTextAtIndex(index).getPieceAtPosition(offset);
+    }
+    getCharacterAtPosition(position) {
+      const {
+        index,
+        offset
+      } = this.locationFromPosition(position);
+      return this.getTextAtIndex(index).getStringAtRange([offset, offset + 1]);
+    }
+    getLength() {
+      return this.blockList.getEndPosition();
+    }
+    getBlocks() {
+      return this.blockList.toArray();
+    }
+    getBlockCount() {
+      return this.blockList.length;
+    }
+    getEditCount() {
+      return this.editCount;
+    }
+    eachBlock(callback) {
+      return this.blockList.eachObject(callback);
+    }
+    eachBlockAtRange(range, callback) {
+      let block, textRange;
+      range = normalizeRange(range);
+      const [startPosition, endPosition] = range;
+      const startLocation = this.locationFromPosition(startPosition);
+      const endLocation = this.locationFromPosition(endPosition);
+      if (startLocation.index === endLocation.index) {
+        block = this.getBlockAtIndex(startLocation.index);
+        textRange = [startLocation.offset, endLocation.offset];
+        return callback(block, textRange, startLocation.index);
+      } else {
+        for (let index = startLocation.index; index <= endLocation.index; index++) {
+          block = this.getBlockAtIndex(index);
+          if (block) {
+            switch (index) {
+              case startLocation.index:
+                textRange = [startLocation.offset, block.text.getLength()];
+                break;
+              case endLocation.index:
+                textRange = [0, endLocation.offset];
+                break;
+              default:
+                textRange = [0, block.text.getLength()];
+            }
+            callback(block, textRange, index);
+          }
+        }
+      }
+    }
+    getCommonAttributesAtRange(range) {
+      range = normalizeRange(range);
+      const [startPosition] = range;
+      if (rangeIsCollapsed(range)) {
+        return this.getCommonAttributesAtPosition(startPosition);
+      } else {
+        const textAttributes = [];
+        const blockAttributes = [];
+        this.eachBlockAtRange(range, function (block, textRange) {
+          if (textRange[0] !== textRange[1]) {
+            textAttributes.push(block.text.getCommonAttributesAtRange(textRange));
+            return blockAttributes.push(attributesForBlock(block));
+          }
+        });
+        return Hash.fromCommonAttributesOfObjects(textAttributes).merge(Hash.fromCommonAttributesOfObjects(blockAttributes)).toObject();
+      }
+    }
+    getCommonAttributesAtPosition(position) {
+      let key, value;
+      const {
+        index,
+        offset
+      } = this.locationFromPosition(position);
+      const block = this.getBlockAtIndex(index);
+      if (!block) {
+        return {};
+      }
+      const commonAttributes = attributesForBlock(block);
+      const attributes = block.text.getAttributesAtPosition(offset);
+      const attributesLeft = block.text.getAttributesAtPosition(offset - 1);
+      const inheritableAttributes = Object.keys(text_attributes).filter(key => {
+        return text_attributes[key].inheritable;
+      });
+      for (key in attributesLeft) {
+        value = attributesLeft[key];
+        if (value === attributes[key] || inheritableAttributes.includes(key)) {
+          commonAttributes[key] = value;
+        }
+      }
+      return commonAttributes;
+    }
+    getRangeOfCommonAttributeAtPosition(attributeName, position) {
+      const {
+        index,
+        offset
+      } = this.locationFromPosition(position);
+      const text = this.getTextAtIndex(index);
+      const [startOffset, endOffset] = Array.from(text.getExpandedRangeForAttributeAtOffset(attributeName, offset));
+      const start = this.positionFromLocation({
+        index,
+        offset: startOffset
+      });
+      const end = this.positionFromLocation({
+        index,
+        offset: endOffset
+      });
+      return normalizeRange([start, end]);
+    }
+    getBaseBlockAttributes() {
+      let baseBlockAttributes = this.getBlockAtIndex(0).getAttributes();
+      for (let blockIndex = 1; blockIndex < this.getBlockCount(); blockIndex++) {
+        const blockAttributes = this.getBlockAtIndex(blockIndex).getAttributes();
+        const lastAttributeIndex = Math.min(baseBlockAttributes.length, blockAttributes.length);
+        baseBlockAttributes = (() => {
+          const result = [];
+          for (let index = 0; index < lastAttributeIndex; index++) {
+            if (blockAttributes[index] !== baseBlockAttributes[index]) {
+              break;
+            }
+            result.push(blockAttributes[index]);
+          }
+          return result;
+        })();
+      }
+      return baseBlockAttributes;
+    }
+    getAttachmentById(attachmentId) {
+      for (const attachment of this.getAttachments()) {
+        if (attachment.id === attachmentId) {
+          return attachment;
+        }
+      }
+    }
+    getAttachmentPieces() {
+      let attachmentPieces = [];
+      this.blockList.eachObject(_ref => {
+        let {
+          text
+        } = _ref;
+        return attachmentPieces = attachmentPieces.concat(text.getAttachmentPieces());
+      });
+      return attachmentPieces;
+    }
+    getAttachments() {
+      return this.getAttachmentPieces().map(piece => piece.attachment);
+    }
+    getRangeOfAttachment(attachment) {
+      let position = 0;
+      const iterable = this.blockList.toArray();
+      for (let index = 0; index < iterable.length; index++) {
+        const {
+          text
+        } = iterable[index];
+        const textRange = text.getRangeOfAttachment(attachment);
+        if (textRange) {
+          return normalizeRange([position + textRange[0], position + textRange[1]]);
+        }
+        position += text.getLength();
+      }
+    }
+    getLocationRangeOfAttachment(attachment) {
+      const range = this.getRangeOfAttachment(attachment);
+      return this.locationRangeFromRange(range);
+    }
+    getAttachmentPieceForAttachment(attachment) {
+      for (const piece of this.getAttachmentPieces()) {
+        if (piece.attachment === attachment) {
+          return piece;
+        }
+      }
+    }
+    findRangesForBlockAttribute(attributeName) {
+      let position = 0;
+      const ranges = [];
+      this.getBlocks().forEach(block => {
+        const length = block.getLength();
+        if (block.hasAttribute(attributeName)) {
+          ranges.push([position, position + length]);
+        }
+        position += length;
+      });
+      return ranges;
+    }
+    findRangesForTextAttribute(attributeName) {
+      let {
+        withValue
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let position = 0;
+      let range = [];
+      const ranges = [];
+      const match = function (piece) {
+        if (withValue) {
+          return piece.getAttribute(attributeName) === withValue;
+        } else {
+          return piece.hasAttribute(attributeName);
+        }
+      };
+      this.getPieces().forEach(piece => {
+        const length = piece.getLength();
+        if (match(piece)) {
+          if (range[1] === position) {
+            range[1] = position + length;
+          } else {
+            ranges.push(range = [position, position + length]);
+          }
+        }
+        position += length;
+      });
+      return ranges;
+    }
+    locationFromPosition(position) {
+      const location = this.blockList.findIndexAndOffsetAtPosition(Math.max(0, position));
+      if (location.index != null) {
+        return location;
+      } else {
+        const blocks = this.getBlocks();
+        return {
+          index: blocks.length - 1,
+          offset: blocks[blocks.length - 1].getLength()
+        };
+      }
+    }
+    positionFromLocation(location) {
+      return this.blockList.findPositionAtIndexAndOffset(location.index, location.offset);
+    }
+    locationRangeFromPosition(position) {
+      return normalizeRange(this.locationFromPosition(position));
+    }
+    locationRangeFromRange(range) {
+      range = normalizeRange(range);
+      if (!range) return;
+      const [startPosition, endPosition] = Array.from(range);
+      const startLocation = this.locationFromPosition(startPosition);
+      const endLocation = this.locationFromPosition(endPosition);
+      return normalizeRange([startLocation, endLocation]);
+    }
+    rangeFromLocationRange(locationRange) {
+      let rightPosition;
+      locationRange = normalizeRange(locationRange);
+      const leftPosition = this.positionFromLocation(locationRange[0]);
+      if (!rangeIsCollapsed(locationRange)) {
+        rightPosition = this.positionFromLocation(locationRange[1]);
+      }
+      return normalizeRange([leftPosition, rightPosition]);
+    }
+    isEqualTo(document) {
+      return this.blockList.isEqualTo(document === null || document === void 0 ? void 0 : document.blockList);
+    }
+    getTexts() {
+      return this.getBlocks().map(block => block.text);
+    }
+    getPieces() {
+      const pieces = [];
+      Array.from(this.getTexts()).forEach(text => {
+        pieces.push(...Array.from(text.getPieces() || []));
+      });
+      return pieces;
+    }
+    getObjects() {
+      return this.getBlocks().concat(this.getTexts()).concat(this.getPieces());
+    }
+    toSerializableDocument() {
+      const blocks = [];
+      this.blockList.eachObject(block => blocks.push(block.copyWithText(block.text.toSerializableText())));
+      return new this.constructor(blocks);
+    }
+    toString() {
+      return this.blockList.toString();
+    }
+    toJSON() {
+      return this.blockList.toJSON();
+    }
+    toConsole() {
+      return JSON.stringify(this.blockList.toArray().map(block => JSON.parse(block.text.toConsole())));
+    }
+  }
+  const attributesForBlock = function (block) {
+    const attributes = {};
+    const attributeName = block.getLastAttribute();
+    if (attributeName) {
+      attributes[attributeName] = true;
+    }
+    return attributes;
+  };
+
+  /* eslint-disable
+      no-case-declarations,
+      no-irregular-whitespace,
+  */
+  const pieceForString = function (string) {
+    let attributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    const type = "string";
+    string = normalizeSpaces(string);
+    return {
+      string,
+      attributes,
+      type
+    };
+  };
+  const pieceForAttachment = function (attachment) {
+    let attributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    const type = "attachment";
+    return {
+      attachment,
+      attributes,
+      type
+    };
+  };
+  const blockForAttributes = function () {
+    let attributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+    let htmlAttributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    const text = [];
+    return {
+      text,
+      attributes,
+      htmlAttributes
+    };
+  };
+  const parseTrixDataAttribute = (element, name) => {
+    try {
+      return JSON.parse(element.getAttribute("data-trix-".concat(name)));
+    } catch (error) {
+      return {};
+    }
+  };
+  const getImageDimensions = element => {
+    const width = element.getAttribute("width");
+    const height = element.getAttribute("height");
+    const dimensions = {};
+    if (width) {
+      dimensions.width = parseInt(width, 10);
+    }
+    if (height) {
+      dimensions.height = parseInt(height, 10);
+    }
+    return dimensions;
+  };
+  class HTMLParser extends BasicObject {
+    static parse(html, options) {
+      const parser = new this(html, options);
+      parser.parse();
+      return parser;
+    }
+    constructor(html) {
+      let {
+        referenceElement
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      super(...arguments);
+      this.html = html;
+      this.referenceElement = referenceElement;
+      this.blocks = [];
+      this.blockElements = [];
+      this.processedElements = [];
+    }
+    getDocument() {
+      return Document.fromJSON(this.blocks);
+    }
+
+    // HTML parsing
+
+    parse() {
+      try {
+        this.createHiddenContainer();
+        HTMLSanitizer.setHTML(this.containerElement, this.html);
+        const walker = walkTree(this.containerElement, {
+          usingFilter: nodeFilter
+        });
+        while (walker.nextNode()) {
+          this.processNode(walker.currentNode);
+        }
+        return this.translateBlockElementMarginsToNewlines();
+      } finally {
+        this.removeHiddenContainer();
+      }
+    }
+    createHiddenContainer() {
+      if (this.referenceElement) {
+        this.containerElement = this.referenceElement.cloneNode(false);
+        this.containerElement.removeAttribute("id");
+        this.containerElement.setAttribute("data-trix-internal", "");
+        this.containerElement.style.display = "none";
+        return this.referenceElement.parentNode.insertBefore(this.containerElement, this.referenceElement.nextSibling);
+      } else {
+        this.containerElement = makeElement({
+          tagName: "div",
+          style: {
+            display: "none"
+          }
+        });
+        return document.body.appendChild(this.containerElement);
+      }
+    }
+    removeHiddenContainer() {
+      return removeNode(this.containerElement);
+    }
+    processNode(node) {
+      switch (node.nodeType) {
+        case Node.TEXT_NODE:
+          if (!this.isInsignificantTextNode(node)) {
+            this.appendBlockForTextNode(node);
+            return this.processTextNode(node);
+          }
+          break;
+        case Node.ELEMENT_NODE:
+          this.appendBlockForElement(node);
+          return this.processElement(node);
+      }
+    }
+    appendBlockForTextNode(node) {
+      const element = node.parentNode;
+      if (element === this.currentBlockElement && this.isBlockElement(node.previousSibling)) {
+        return this.appendStringWithAttributes("\n");
+      } else if (element === this.containerElement || this.isBlockElement(element)) {
+        var _this$currentBlock;
+        const attributes = this.getBlockAttributes(element);
+        const htmlAttributes = this.getBlockHTMLAttributes(element);
+        if (!arraysAreEqual(attributes, (_this$currentBlock = this.currentBlock) === null || _this$currentBlock === void 0 ? void 0 : _this$currentBlock.attributes)) {
+          this.currentBlock = this.appendBlockForAttributesWithElement(attributes, element, htmlAttributes);
+          this.currentBlockElement = element;
+        }
+      }
+    }
+    appendBlockForElement(element) {
+      const elementIsBlockElement = this.isBlockElement(element);
+      const currentBlockContainsElement = elementContainsNode(this.currentBlockElement, element);
+      if (elementIsBlockElement && !this.isBlockElement(element.firstChild)) {
+        if (!this.isInsignificantTextNode(element.firstChild) || !this.isBlockElement(element.firstElementChild)) {
+          const attributes = this.getBlockAttributes(element);
+          const htmlAttributes = this.getBlockHTMLAttributes(element);
+          if (element.firstChild) {
+            if (!(currentBlockContainsElement && arraysAreEqual(attributes, this.currentBlock.attributes))) {
+              this.currentBlock = this.appendBlockForAttributesWithElement(attributes, element, htmlAttributes);
+              this.currentBlockElement = element;
+            } else {
+              return this.appendStringWithAttributes("\n");
+            }
+          }
+        }
+      } else if (this.currentBlockElement && !currentBlockContainsElement && !elementIsBlockElement) {
+        const parentBlockElement = this.findParentBlockElement(element);
+        if (parentBlockElement) {
+          return this.appendBlockForElement(parentBlockElement);
+        } else {
+          this.currentBlock = this.appendEmptyBlock();
+          this.currentBlockElement = null;
+        }
+      }
+    }
+    findParentBlockElement(element) {
+      let {
+        parentElement
+      } = element;
+      while (parentElement && parentElement !== this.containerElement) {
+        if (this.isBlockElement(parentElement) && this.blockElements.includes(parentElement)) {
+          return parentElement;
+        } else {
+          parentElement = parentElement.parentElement;
+        }
+      }
+      return null;
+    }
+    processTextNode(node) {
+      let string = node.data;
+      if (!elementCanDisplayPreformattedText(node.parentNode)) {
+        var _node$previousSibling;
+        string = squishBreakableWhitespace(string);
+        if (stringEndsWithWhitespace((_node$previousSibling = node.previousSibling) === null || _node$previousSibling === void 0 ? void 0 : _node$previousSibling.textContent)) {
+          string = leftTrimBreakableWhitespace(string);
+        }
+      }
+      return this.appendStringWithAttributes(string, this.getTextAttributes(node.parentNode));
+    }
+    processElement(element) {
+      let attributes;
+      if (nodeIsAttachmentElement(element)) {
+        attributes = parseTrixDataAttribute(element, "attachment");
+        if (Object.keys(attributes).length) {
+          const textAttributes = this.getTextAttributes(element);
+          this.appendAttachmentWithAttributes(attributes, textAttributes);
+          // We have everything we need so avoid processing inner nodes
+          element.innerHTML = "";
+        }
+        return this.processedElements.push(element);
+      } else {
+        switch (tagName(element)) {
+          case "br":
+            if (!this.isExtraBR(element) && !this.isBlockElement(element.nextSibling)) {
+              this.appendStringWithAttributes("\n", this.getTextAttributes(element));
+            }
+            return this.processedElements.push(element);
+          case "img":
+            attributes = {
+              url: element.getAttribute("src"),
+              contentType: "image"
+            };
+            const object = getImageDimensions(element);
+            for (const key in object) {
+              const value = object[key];
+              attributes[key] = value;
+            }
+            this.appendAttachmentWithAttributes(attributes, this.getTextAttributes(element));
+            return this.processedElements.push(element);
+          case "tr":
+            if (this.needsTableSeparator(element)) {
+              return this.appendStringWithAttributes(parser.tableRowSeparator);
+            }
+            break;
+          case "td":
+            if (this.needsTableSeparator(element)) {
+              return this.appendStringWithAttributes(parser.tableCellSeparator);
+            }
+            break;
+        }
+      }
+    }
+
+    // Document construction
+
+    appendBlockForAttributesWithElement(attributes, element) {
+      let htmlAttributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+      this.blockElements.push(element);
+      const block = blockForAttributes(attributes, htmlAttributes);
+      this.blocks.push(block);
+      return block;
+    }
+    appendEmptyBlock() {
+      return this.appendBlockForAttributesWithElement([], null);
+    }
+    appendStringWithAttributes(string, attributes) {
+      return this.appendPiece(pieceForString(string, attributes));
+    }
+    appendAttachmentWithAttributes(attachment, attributes) {
+      return this.appendPiece(pieceForAttachment(attachment, attributes));
+    }
+    appendPiece(piece) {
+      if (this.blocks.length === 0) {
+        this.appendEmptyBlock();
+      }
+      return this.blocks[this.blocks.length - 1].text.push(piece);
+    }
+    appendStringToTextAtIndex(string, index) {
+      const {
+        text
+      } = this.blocks[index];
+      const piece = text[text.length - 1];
+      if ((piece === null || piece === void 0 ? void 0 : piece.type) === "string") {
+        piece.string += string;
+      } else {
+        return text.push(pieceForString(string));
+      }
+    }
+    prependStringToTextAtIndex(string, index) {
+      const {
+        text
+      } = this.blocks[index];
+      const piece = text[0];
+      if ((piece === null || piece === void 0 ? void 0 : piece.type) === "string") {
+        piece.string = string + piece.string;
+      } else {
+        return text.unshift(pieceForString(string));
+      }
+    }
+
+    // Attribute parsing
+
+    getTextAttributes(element) {
+      let value;
+      const attributes = {};
+      for (const attribute in text_attributes) {
+        const configAttr = text_attributes[attribute];
+        if (configAttr.tagName && findClosestElementFromNode(element, {
+          matchingSelector: configAttr.tagName,
+          untilNode: this.containerElement
+        })) {
+          attributes[attribute] = true;
+        } else if (configAttr.parser) {
+          value = configAttr.parser(element);
+          if (value) {
+            let attributeInheritedFromBlock = false;
+            for (const blockElement of this.findBlockElementAncestors(element)) {
+              if (configAttr.parser(blockElement) === value) {
+                attributeInheritedFromBlock = true;
+                break;
+              }
+            }
+            if (!attributeInheritedFromBlock) {
+              attributes[attribute] = value;
+            }
+          }
+        } else if (configAttr.styleProperty) {
+          value = element.style[configAttr.styleProperty];
+          if (value) {
+            attributes[attribute] = value;
+          }
+        }
+      }
+      if (nodeIsAttachmentElement(element)) {
+        const object = parseTrixDataAttribute(element, "attributes");
+        for (const key in object) {
+          value = object[key];
+          attributes[key] = value;
+        }
+      }
+      return attributes;
+    }
+    getBlockAttributes(element) {
+      const attributes$1 = [];
+      while (element && element !== this.containerElement) {
+        for (const attribute in attributes) {
+          const attrConfig = attributes[attribute];
+          if (attrConfig.parse !== false) {
+            if (tagName(element) === attrConfig.tagName) {
+              var _attrConfig$test;
+              if ((_attrConfig$test = attrConfig.test) !== null && _attrConfig$test !== void 0 && _attrConfig$test.call(attrConfig, element) || !attrConfig.test) {
+                attributes$1.push(attribute);
+                if (attrConfig.listAttribute) {
+                  attributes$1.push(attrConfig.listAttribute);
+                }
+              }
+            }
+          }
+        }
+        element = element.parentNode;
+      }
+      return attributes$1.reverse();
+    }
+    getBlockHTMLAttributes(element) {
+      const attributes$1 = {};
+      const blockConfig = Object.values(attributes).find(settings => settings.tagName === tagName(element));
+      const allowedAttributes = (blockConfig === null || blockConfig === void 0 ? void 0 : blockConfig.htmlAttributes) || [];
+      allowedAttributes.forEach(attribute => {
+        if (element.hasAttribute(attribute)) {
+          attributes$1[attribute] = element.getAttribute(attribute);
+        }
+      });
+      return attributes$1;
+    }
+    findBlockElementAncestors(element) {
+      const ancestors = [];
+      while (element && element !== this.containerElement) {
+        const tag = tagName(element);
+        if (getBlockTagNames().includes(tag)) {
+          ancestors.push(element);
+        }
+        element = element.parentNode;
+      }
+      return ancestors;
+    }
+
+    // Element inspection
+
+    isBlockElement(element) {
+      if ((element === null || element === void 0 ? void 0 : element.nodeType) !== Node.ELEMENT_NODE) return;
+      if (nodeIsAttachmentElement(element)) return;
+      if (findClosestElementFromNode(element, {
+        matchingSelector: "td",
+        untilNode: this.containerElement
+      })) return;
+      return getBlockTagNames().includes(tagName(element)) || window.getComputedStyle(element).display === "block";
+    }
+    isInsignificantTextNode(node) {
+      if ((node === null || node === void 0 ? void 0 : node.nodeType) !== Node.TEXT_NODE) return;
+      if (!stringIsAllBreakableWhitespace(node.data)) return;
+      const {
+        parentNode,
+        previousSibling,
+        nextSibling
+      } = node;
+      if (nodeEndsWithNonWhitespace(parentNode.previousSibling) && !this.isBlockElement(parentNode.previousSibling)) return;
+      if (elementCanDisplayPreformattedText(parentNode)) return;
+      return !previousSibling || this.isBlockElement(previousSibling) || !nextSibling || this.isBlockElement(nextSibling);
+    }
+    isExtraBR(element) {
+      return tagName(element) === "br" && this.isBlockElement(element.parentNode) && element.parentNode.lastChild === element;
+    }
+    needsTableSeparator(element) {
+      if (parser.removeBlankTableCells) {
+        var _element$previousSibl;
+        const content = (_element$previousSibl = element.previousSibling) === null || _element$previousSibl === void 0 ? void 0 : _element$previousSibl.textContent;
+        return content && /\S/.test(content);
+      } else {
+        return element.previousSibling;
+      }
+    }
+
+    // Margin translation
+
+    translateBlockElementMarginsToNewlines() {
+      const defaultMargin = this.getMarginOfDefaultBlockElement();
+      for (let index = 0; index < this.blocks.length; index++) {
+        const margin = this.getMarginOfBlockElementAtIndex(index);
+        if (margin) {
+          if (margin.top > defaultMargin.top * 2) {
+            this.prependStringToTextAtIndex("\n", index);
+          }
+          if (margin.bottom > defaultMargin.bottom * 2) {
+            this.appendStringToTextAtIndex("\n", index);
+          }
+        }
+      }
+    }
+    getMarginOfBlockElementAtIndex(index) {
+      const element = this.blockElements[index];
+      if (element) {
+        if (element.textContent) {
+          if (!getBlockTagNames().includes(tagName(element)) && !this.processedElements.includes(element)) {
+            return getBlockElementMargin(element);
+          }
+        }
+      }
+    }
+    getMarginOfDefaultBlockElement() {
+      const element = makeElement(attributes.default.tagName);
+      this.containerElement.appendChild(element);
+      return getBlockElementMargin(element);
+    }
+  }
+
+  // Helpers
+
+  const elementCanDisplayPreformattedText = function (element) {
+    const {
+      whiteSpace
+    } = window.getComputedStyle(element);
+    return ["pre", "pre-wrap", "pre-line"].includes(whiteSpace);
+  };
+  const nodeEndsWithNonWhitespace = node => node && !stringEndsWithWhitespace(node.textContent);
+  const getBlockElementMargin = function (element) {
+    const style = window.getComputedStyle(element);
+    if (style.display === "block") {
+      return {
+        top: parseInt(style.marginTop),
+        bottom: parseInt(style.marginBottom)
+      };
+    }
+  };
+  const nodeFilter = function (node) {
+    if (tagName(node) === "style") {
+      return NodeFilter.FILTER_REJECT;
+    } else {
+      return NodeFilter.FILTER_ACCEPT;
+    }
+  };
+
+  // Whitespace
+
+  const leftTrimBreakableWhitespace = string => string.replace(new RegExp("^".concat(breakableWhitespacePattern.source, "+")), "");
+  const stringIsAllBreakableWhitespace = string => new RegExp("^".concat(breakableWhitespacePattern.source, "*$")).test(string);
+  const stringEndsWithWhitespace = string => /\s$/.test(string);
+
+  /* eslint-disable
+      no-empty,
+  */
+  const unserializableElementSelector = "[data-trix-serialize=false]";
+  const unserializableAttributeNames = ["contenteditable", "data-trix-id", "data-trix-store-key", "data-trix-mutable", "data-trix-placeholder", "tabindex"];
+  const serializedAttributesAttribute = "data-trix-serialized-attributes";
+  const serializedAttributesSelector = "[".concat(serializedAttributesAttribute, "]");
+  const blockCommentPattern = new RegExp("<!--block-->", "g");
+  const serializers = {
+    "application/json": function (serializable) {
+      let document;
+      if (serializable instanceof Document) {
+        document = serializable;
+      } else if (serializable instanceof HTMLElement) {
+        document = HTMLParser.parse(serializable.innerHTML).getDocument();
+      } else {
+        throw new Error("unserializable object");
+      }
+      return document.toSerializableDocument().toJSONString();
+    },
+    "text/html": function (serializable) {
+      let element;
+      if (serializable instanceof Document) {
+        element = DocumentView.render(serializable);
+      } else if (serializable instanceof HTMLElement) {
+        element = serializable.cloneNode(true);
+      } else {
+        throw new Error("unserializable object");
+      }
+
+      // Remove unserializable elements
+      Array.from(element.querySelectorAll(unserializableElementSelector)).forEach(el => {
+        removeNode(el);
+      });
+
+      // Remove unserializable attributes
+      unserializableAttributeNames.forEach(attribute => {
+        Array.from(element.querySelectorAll("[".concat(attribute, "]"))).forEach(el => {
+          el.removeAttribute(attribute);
+        });
+      });
+
+      // Rewrite elements with serialized attribute overrides
+      Array.from(element.querySelectorAll(serializedAttributesSelector)).forEach(el => {
+        try {
+          const attributes = JSON.parse(el.getAttribute(serializedAttributesAttribute));
+          el.removeAttribute(serializedAttributesAttribute);
+          for (const name in attributes) {
+            const value = attributes[name];
+            el.setAttribute(name, value);
+          }
+        } catch (error) {}
+      });
+      return element.innerHTML.replace(blockCommentPattern, "");
+    }
+  };
+  const deserializers = {
+    "application/json": function (string) {
+      return Document.fromJSONString(string);
+    },
+    "text/html": function (string) {
+      return HTMLParser.parse(string).getDocument();
+    }
+  };
+  const serializeToContentType = function (serializable, contentType) {
+    const serializer = serializers[contentType];
+    if (serializer) {
+      return serializer(serializable);
+    } else {
+      throw new Error("unknown content type: ".concat(contentType));
+    }
+  };
+  const deserializeFromContentType = function (string, contentType) {
+    const deserializer = deserializers[contentType];
+    if (deserializer) {
+      return deserializer(string);
+    } else {
+      throw new Error("unknown content type: ".concat(contentType));
+    }
+  };
+
+  var core = /*#__PURE__*/Object.freeze({
+    __proto__: null
+  });
+
+  class ManagedAttachment extends BasicObject {
+    constructor(attachmentManager, attachment) {
+      super(...arguments);
+      this.attachmentManager = attachmentManager;
+      this.attachment = attachment;
+      this.id = this.attachment.id;
+      this.file = this.attachment.file;
+    }
+    remove() {
+      return this.attachmentManager.requestRemovalOfAttachment(this.attachment);
+    }
+  }
+  ManagedAttachment.proxyMethod("attachment.getAttribute");
+  ManagedAttachment.proxyMethod("attachment.hasAttribute");
+  ManagedAttachment.proxyMethod("attachment.setAttribute");
+  ManagedAttachment.proxyMethod("attachment.getAttributes");
+  ManagedAttachment.proxyMethod("attachment.setAttributes");
+  ManagedAttachment.proxyMethod("attachment.isPending");
+  ManagedAttachment.proxyMethod("attachment.isPreviewable");
+  ManagedAttachment.proxyMethod("attachment.getURL");
+  ManagedAttachment.proxyMethod("attachment.getHref");
+  ManagedAttachment.proxyMethod("attachment.getFilename");
+  ManagedAttachment.proxyMethod("attachment.getFilesize");
+  ManagedAttachment.proxyMethod("attachment.getFormattedFilesize");
+  ManagedAttachment.proxyMethod("attachment.getExtension");
+  ManagedAttachment.proxyMethod("attachment.getContentType");
+  ManagedAttachment.proxyMethod("attachment.getFile");
+  ManagedAttachment.proxyMethod("attachment.setFile");
+  ManagedAttachment.proxyMethod("attachment.releaseFile");
+  ManagedAttachment.proxyMethod("attachment.getUploadProgress");
+  ManagedAttachment.proxyMethod("attachment.setUploadProgress");
+
+  class AttachmentManager extends BasicObject {
+    constructor() {
+      let attachments = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+      super(...arguments);
+      this.managedAttachments = {};
+      Array.from(attachments).forEach(attachment => {
+        this.manageAttachment(attachment);
+      });
+    }
+    getAttachments() {
+      const result = [];
+      for (const id in this.managedAttachments) {
+        const attachment = this.managedAttachments[id];
+        result.push(attachment);
+      }
+      return result;
+    }
+    manageAttachment(attachment) {
+      if (!this.managedAttachments[attachment.id]) {
+        this.managedAttachments[attachment.id] = new ManagedAttachment(this, attachment);
+      }
+      return this.managedAttachments[attachment.id];
+    }
+    attachmentIsManaged(attachment) {
+      return attachment.id in this.managedAttachments;
+    }
+    requestRemovalOfAttachment(attachment) {
+      if (this.attachmentIsManaged(attachment)) {
+        var _this$delegate, _this$delegate$attach;
+        return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$attach = _this$delegate.attachmentManagerDidRequestRemovalOfAttachment) === null || _this$delegate$attach === void 0 ? void 0 : _this$delegate$attach.call(_this$delegate, attachment);
+      }
+    }
+    unmanageAttachment(attachment) {
+      const managedAttachment = this.managedAttachments[attachment.id];
+      delete this.managedAttachments[attachment.id];
+      return managedAttachment;
+    }
+  }
+
+  class LineBreakInsertion {
+    constructor(composition) {
+      this.composition = composition;
+      this.document = this.composition.document;
+      const selectedRange = this.composition.getSelectedRange();
+      this.startPosition = selectedRange[0];
+      this.endPosition = selectedRange[1];
+      this.startLocation = this.document.locationFromPosition(this.startPosition);
+      this.endLocation = this.document.locationFromPosition(this.endPosition);
+      this.block = this.document.getBlockAtIndex(this.endLocation.index);
+      this.breaksOnReturn = this.block.breaksOnReturn();
+      this.previousCharacter = this.block.text.getStringAtPosition(this.endLocation.offset - 1);
+      this.nextCharacter = this.block.text.getStringAtPosition(this.endLocation.offset);
+    }
+    shouldInsertBlockBreak() {
+      if (this.block.hasAttributes() && this.block.isListItem() && !this.block.isEmpty()) {
+        return this.startLocation.offset !== 0;
+      } else {
+        return this.breaksOnReturn && this.nextCharacter !== "\n";
+      }
+    }
+    shouldBreakFormattedBlock() {
+      return this.block.hasAttributes() && !this.block.isListItem() && (this.breaksOnReturn && this.nextCharacter === "\n" || this.previousCharacter === "\n");
+    }
+    shouldDecreaseListLevel() {
+      return this.block.hasAttributes() && this.block.isListItem() && this.block.isEmpty();
+    }
+    shouldPrependListItem() {
+      return this.block.isListItem() && this.startLocation.offset === 0 && !this.block.isEmpty();
+    }
+    shouldRemoveLastBlockAttribute() {
+      return this.block.hasAttributes() && !this.block.isListItem() && this.block.isEmpty();
+    }
+  }
+
+  const PLACEHOLDER = " ";
+  class Composition extends BasicObject {
+    constructor() {
+      super(...arguments);
+      this.document = new Document();
+      this.attachments = [];
+      this.currentAttributes = {};
+      this.revision = 0;
+    }
+    setDocument(document) {
+      if (!document.isEqualTo(this.document)) {
+        var _this$delegate, _this$delegate$compos;
+        this.document = document;
+        this.refreshAttachments();
+        this.revision++;
+        return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$compos = _this$delegate.compositionDidChangeDocument) === null || _this$delegate$compos === void 0 ? void 0 : _this$delegate$compos.call(_this$delegate, document);
+      }
+    }
+
+    // Snapshots
+
+    getSnapshot() {
+      return {
+        document: this.document,
+        selectedRange: this.getSelectedRange()
+      };
+    }
+    loadSnapshot(_ref) {
+      var _this$delegate2, _this$delegate2$compo, _this$delegate3, _this$delegate3$compo;
+      let {
+        document,
+        selectedRange
+      } = _ref;
+      (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || (_this$delegate2$compo = _this$delegate2.compositionWillLoadSnapshot) === null || _this$delegate2$compo === void 0 || _this$delegate2$compo.call(_this$delegate2);
+      this.setDocument(document != null ? document : new Document());
+      this.setSelection(selectedRange != null ? selectedRange : [0, 0]);
+      return (_this$delegate3 = this.delegate) === null || _this$delegate3 === void 0 || (_this$delegate3$compo = _this$delegate3.compositionDidLoadSnapshot) === null || _this$delegate3$compo === void 0 ? void 0 : _this$delegate3$compo.call(_this$delegate3);
+    }
+
+    // Responder protocol
+
+    insertText(text) {
+      let {
+        updatePosition
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+        updatePosition: true
+      };
+      const selectedRange = this.getSelectedRange();
+      this.setDocument(this.document.insertTextAtRange(text, selectedRange));
+      const startPosition = selectedRange[0];
+      const endPosition = startPosition + text.getLength();
+      if (updatePosition) {
+        this.setSelection(endPosition);
+      }
+      return this.notifyDelegateOfInsertionAtRange([startPosition, endPosition]);
+    }
+    insertBlock() {
+      let block = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : new Block();
+      const document = new Document([block]);
+      return this.insertDocument(document);
+    }
+    insertDocument() {
+      let document = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : new Document();
+      const selectedRange = this.getSelectedRange();
+      this.setDocument(this.document.insertDocumentAtRange(document, selectedRange));
+      const startPosition = selectedRange[0];
+      const endPosition = startPosition + document.getLength();
+      this.setSelection(endPosition);
+      return this.notifyDelegateOfInsertionAtRange([startPosition, endPosition]);
+    }
+    insertString(string, options) {
+      const attributes = this.getCurrentTextAttributes();
+      const text = Text.textForStringWithAttributes(string, attributes);
+      return this.insertText(text, options);
+    }
+    insertBlockBreak() {
+      const selectedRange = this.getSelectedRange();
+      this.setDocument(this.document.insertBlockBreakAtRange(selectedRange));
+      const startPosition = selectedRange[0];
+      const endPosition = startPosition + 1;
+      this.setSelection(endPosition);
+      return this.notifyDelegateOfInsertionAtRange([startPosition, endPosition]);
+    }
+    insertLineBreak() {
+      const insertion = new LineBreakInsertion(this);
+      if (insertion.shouldDecreaseListLevel()) {
+        this.decreaseListLevel();
+        return this.setSelection(insertion.startPosition);
+      } else if (insertion.shouldPrependListItem()) {
+        const document = new Document([insertion.block.copyWithoutText()]);
+        return this.insertDocument(document);
+      } else if (insertion.shouldInsertBlockBreak()) {
+        return this.insertBlockBreak();
+      } else if (insertion.shouldRemoveLastBlockAttribute()) {
+        return this.removeLastBlockAttribute();
+      } else if (insertion.shouldBreakFormattedBlock()) {
+        return this.breakFormattedBlock(insertion);
+      } else {
+        return this.insertString("\n");
+      }
+    }
+    insertHTML(html) {
+      const document = HTMLParser.parse(html).getDocument();
+      const selectedRange = this.getSelectedRange();
+      this.setDocument(this.document.mergeDocumentAtRange(document, selectedRange));
+      const startPosition = selectedRange[0];
+      const endPosition = startPosition + document.getLength() - 1;
+      this.setSelection(endPosition);
+      return this.notifyDelegateOfInsertionAtRange([startPosition, endPosition]);
+    }
+    replaceHTML(html) {
+      const document = HTMLParser.parse(html).getDocument().copyUsingObjectsFromDocument(this.document);
+      const locationRange = this.getLocationRange({
+        strict: false
+      });
+      const selectedRange = this.document.rangeFromLocationRange(locationRange);
+      this.setDocument(document);
+      return this.setSelection(selectedRange);
+    }
+    insertFile(file) {
+      return this.insertFiles([file]);
+    }
+    insertFiles(files) {
+      const attachments = [];
+      Array.from(files).forEach(file => {
+        var _this$delegate4;
+        if ((_this$delegate4 = this.delegate) !== null && _this$delegate4 !== void 0 && _this$delegate4.compositionShouldAcceptFile(file)) {
+          const attachment = Attachment.attachmentForFile(file);
+          attachments.push(attachment);
+        }
+      });
+      return this.insertAttachments(attachments);
+    }
+    insertAttachment(attachment) {
+      return this.insertAttachments([attachment]);
+    }
+    insertAttachments(attachments$1) {
+      let text = new Text();
+      Array.from(attachments$1).forEach(attachment => {
+        var _config$attachments$t;
+        const type = attachment.getType();
+        const presentation = (_config$attachments$t = attachments[type]) === null || _config$attachments$t === void 0 ? void 0 : _config$attachments$t.presentation;
+        const attributes = this.getCurrentTextAttributes();
+        if (presentation) {
+          attributes.presentation = presentation;
+        }
+        const attachmentText = Text.textForAttachmentWithAttributes(attachment, attributes);
+        text = text.appendText(attachmentText);
+      });
+      return this.insertText(text);
+    }
+    shouldManageDeletingInDirection(direction) {
+      const locationRange = this.getLocationRange();
+      if (rangeIsCollapsed(locationRange)) {
+        if (direction === "backward" && locationRange[0].offset === 0) {
+          return true;
+        }
+        if (this.shouldManageMovingCursorInDirection(direction)) {
+          return true;
+        }
+      } else {
+        if (locationRange[0].index !== locationRange[1].index) {
+          return true;
+        }
+      }
+      return false;
+    }
+    deleteInDirection(direction) {
+      let {
+        length
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let attachment, deletingIntoPreviousBlock, selectionSpansBlocks;
+      const locationRange = this.getLocationRange();
+      let range = this.getSelectedRange();
+      const selectionIsCollapsed = rangeIsCollapsed(range);
+      if (selectionIsCollapsed) {
+        deletingIntoPreviousBlock = direction === "backward" && locationRange[0].offset === 0;
+      } else {
+        selectionSpansBlocks = locationRange[0].index !== locationRange[1].index;
+      }
+      if (deletingIntoPreviousBlock) {
+        if (this.canDecreaseBlockAttributeLevel()) {
+          const block = this.getBlock();
+          if (block.isListItem()) {
+            this.decreaseListLevel();
+          } else {
+            this.decreaseBlockAttributeLevel();
+          }
+          this.setSelection(range[0]);
+          if (block.isEmpty()) {
+            return false;
+          }
+        }
+      }
+      if (selectionIsCollapsed) {
+        range = this.getExpandedRangeInDirection(direction, {
+          length
+        });
+        if (direction === "backward") {
+          attachment = this.getAttachmentAtRange(range);
+        }
+      }
+      if (attachment) {
+        this.editAttachment(attachment);
+        return false;
+      } else {
+        this.setDocument(this.document.removeTextAtRange(range));
+        this.setSelection(range[0]);
+        if (deletingIntoPreviousBlock || selectionSpansBlocks) {
+          return false;
+        }
+      }
+    }
+    moveTextFromRange(range) {
+      const [position] = Array.from(this.getSelectedRange());
+      this.setDocument(this.document.moveTextFromRangeToPosition(range, position));
+      return this.setSelection(position);
+    }
+    removeAttachment(attachment) {
+      const range = this.document.getRangeOfAttachment(attachment);
+      if (range) {
+        this.stopEditingAttachment();
+        this.setDocument(this.document.removeTextAtRange(range));
+        return this.setSelection(range[0]);
+      }
+    }
+    removeLastBlockAttribute() {
+      const [startPosition, endPosition] = Array.from(this.getSelectedRange());
+      const block = this.document.getBlockAtPosition(endPosition);
+      this.removeCurrentAttribute(block.getLastAttribute());
+      return this.setSelection(startPosition);
+    }
+    insertPlaceholder() {
+      this.placeholderPosition = this.getPosition();
+      return this.insertString(PLACEHOLDER);
+    }
+    selectPlaceholder() {
+      if (this.placeholderPosition != null) {
+        this.setSelectedRange([this.placeholderPosition, this.placeholderPosition + PLACEHOLDER.length]);
+        return this.getSelectedRange();
+      }
+    }
+    forgetPlaceholder() {
+      this.placeholderPosition = null;
+    }
+
+    // Current attributes
+
+    hasCurrentAttribute(attributeName) {
+      const value = this.currentAttributes[attributeName];
+      return value != null && value !== false;
+    }
+    toggleCurrentAttribute(attributeName) {
+      const value = !this.currentAttributes[attributeName];
+      if (value) {
+        return this.setCurrentAttribute(attributeName, value);
+      } else {
+        return this.removeCurrentAttribute(attributeName);
+      }
+    }
+    canSetCurrentAttribute(attributeName) {
+      if (getBlockConfig(attributeName)) {
+        return this.canSetCurrentBlockAttribute(attributeName);
+      } else {
+        return this.canSetCurrentTextAttribute(attributeName);
+      }
+    }
+    canSetCurrentTextAttribute(attributeName) {
+      const document = this.getSelectedDocument();
+      if (!document) return;
+      for (const attachment of Array.from(document.getAttachments())) {
+        if (!attachment.hasContent()) {
+          return false;
+        }
+      }
+      return true;
+    }
+    canSetCurrentBlockAttribute(attributeName) {
+      const block = this.getBlock();
+      if (!block) return;
+      return !block.isTerminalBlock();
+    }
+    setCurrentAttribute(attributeName, value) {
+      if (getBlockConfig(attributeName)) {
+        return this.setBlockAttribute(attributeName, value);
+      } else {
+        this.setTextAttribute(attributeName, value);
+        this.currentAttributes[attributeName] = value;
+        return this.notifyDelegateOfCurrentAttributesChange();
+      }
+    }
+    setHTMLAtributeAtPosition(position, attributeName, value) {
+      var _getBlockConfig;
+      const block = this.document.getBlockAtPosition(position);
+      const allowedHTMLAttributes = (_getBlockConfig = getBlockConfig(block.getLastAttribute())) === null || _getBlockConfig === void 0 ? void 0 : _getBlockConfig.htmlAttributes;
+      if (block && allowedHTMLAttributes !== null && allowedHTMLAttributes !== void 0 && allowedHTMLAttributes.includes(attributeName)) {
+        const newDocument = this.document.setHTMLAttributeAtPosition(position, attributeName, value);
+        this.setDocument(newDocument);
+      }
+    }
+    setTextAttribute(attributeName, value) {
+      const selectedRange = this.getSelectedRange();
+      if (!selectedRange) return;
+      const [startPosition, endPosition] = Array.from(selectedRange);
+      if (startPosition === endPosition) {
+        if (attributeName === "href") {
+          const text = Text.textForStringWithAttributes(value, {
+            href: value
+          });
+          return this.insertText(text);
+        }
+      } else {
+        return this.setDocument(this.document.addAttributeAtRange(attributeName, value, selectedRange));
+      }
+    }
+    setBlockAttribute(attributeName, value) {
+      const selectedRange = this.getSelectedRange();
+      if (this.canSetCurrentAttribute(attributeName)) {
+        this.setDocument(this.document.applyBlockAttributeAtRange(attributeName, value, selectedRange));
+        return this.setSelection(selectedRange);
+      }
+    }
+    removeCurrentAttribute(attributeName) {
+      if (getBlockConfig(attributeName)) {
+        this.removeBlockAttribute(attributeName);
+        return this.updateCurrentAttributes();
+      } else {
+        this.removeTextAttribute(attributeName);
+        delete this.currentAttributes[attributeName];
+        return this.notifyDelegateOfCurrentAttributesChange();
+      }
+    }
+    removeTextAttribute(attributeName) {
+      const selectedRange = this.getSelectedRange();
+      if (!selectedRange) return;
+      return this.setDocument(this.document.removeAttributeAtRange(attributeName, selectedRange));
+    }
+    removeBlockAttribute(attributeName) {
+      const selectedRange = this.getSelectedRange();
+      if (!selectedRange) return;
+      return this.setDocument(this.document.removeAttributeAtRange(attributeName, selectedRange));
+    }
+    canDecreaseNestingLevel() {
+      var _this$getBlock;
+      return ((_this$getBlock = this.getBlock()) === null || _this$getBlock === void 0 ? void 0 : _this$getBlock.getNestingLevel()) > 0;
+    }
+    canIncreaseNestingLevel() {
+      var _getBlockConfig2;
+      const block = this.getBlock();
+      if (!block) return;
+      if ((_getBlockConfig2 = getBlockConfig(block.getLastNestableAttribute())) !== null && _getBlockConfig2 !== void 0 && _getBlockConfig2.listAttribute) {
+        const previousBlock = this.getPreviousBlock();
+        if (previousBlock) {
+          return arrayStartsWith(previousBlock.getListItemAttributes(), block.getListItemAttributes());
+        }
+      } else {
+        return block.getNestingLevel() > 0;
+      }
+    }
+    decreaseNestingLevel() {
+      const block = this.getBlock();
+      if (!block) return;
+      return this.setDocument(this.document.replaceBlock(block, block.decreaseNestingLevel()));
+    }
+    increaseNestingLevel() {
+      const block = this.getBlock();
+      if (!block) return;
+      return this.setDocument(this.document.replaceBlock(block, block.increaseNestingLevel()));
+    }
+    canDecreaseBlockAttributeLevel() {
+      var _this$getBlock2;
+      return ((_this$getBlock2 = this.getBlock()) === null || _this$getBlock2 === void 0 ? void 0 : _this$getBlock2.getAttributeLevel()) > 0;
+    }
+    decreaseBlockAttributeLevel() {
+      var _this$getBlock3;
+      const attribute = (_this$getBlock3 = this.getBlock()) === null || _this$getBlock3 === void 0 ? void 0 : _this$getBlock3.getLastAttribute();
+      if (attribute) {
+        return this.removeCurrentAttribute(attribute);
+      }
+    }
+    decreaseListLevel() {
+      let [startPosition] = Array.from(this.getSelectedRange());
+      const {
+        index
+      } = this.document.locationFromPosition(startPosition);
+      let endIndex = index;
+      const attributeLevel = this.getBlock().getAttributeLevel();
+      let block = this.document.getBlockAtIndex(endIndex + 1);
+      while (block) {
+        if (!block.isListItem() || block.getAttributeLevel() <= attributeLevel) {
+          break;
+        }
+        endIndex++;
+        block = this.document.getBlockAtIndex(endIndex + 1);
+      }
+      startPosition = this.document.positionFromLocation({
+        index,
+        offset: 0
+      });
+      const endPosition = this.document.positionFromLocation({
+        index: endIndex,
+        offset: 0
+      });
+      return this.setDocument(this.document.removeLastListAttributeAtRange([startPosition, endPosition]));
+    }
+    updateCurrentAttributes() {
+      const selectedRange = this.getSelectedRange({
+        ignoreLock: true
+      });
+      if (selectedRange) {
+        const currentAttributes = this.document.getCommonAttributesAtRange(selectedRange);
+        Array.from(getAllAttributeNames()).forEach(attributeName => {
+          if (!currentAttributes[attributeName]) {
+            if (!this.canSetCurrentAttribute(attributeName)) {
+              currentAttributes[attributeName] = false;
+            }
+          }
+        });
+        if (!objectsAreEqual(currentAttributes, this.currentAttributes)) {
+          this.currentAttributes = currentAttributes;
+          return this.notifyDelegateOfCurrentAttributesChange();
+        }
+      }
+    }
+    getCurrentAttributes() {
+      return extend.call({}, this.currentAttributes);
+    }
+    getCurrentTextAttributes() {
+      const attributes = {};
+      for (const key in this.currentAttributes) {
+        const value = this.currentAttributes[key];
+        if (value !== false) {
+          if (getTextConfig(key)) {
+            attributes[key] = value;
+          }
+        }
+      }
+      return attributes;
+    }
+
+    // Selection freezing
+
+    freezeSelection() {
+      return this.setCurrentAttribute("frozen", true);
+    }
+    thawSelection() {
+      return this.removeCurrentAttribute("frozen");
+    }
+    hasFrozenSelection() {
+      return this.hasCurrentAttribute("frozen");
+    }
+    setSelection(selectedRange) {
+      var _this$delegate5;
+      const locationRange = this.document.locationRangeFromRange(selectedRange);
+      return (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 ? void 0 : _this$delegate5.compositionDidRequestChangingSelectionToLocationRange(locationRange);
+    }
+    getSelectedRange() {
+      const locationRange = this.getLocationRange();
+      if (locationRange) {
+        return this.document.rangeFromLocationRange(locationRange);
+      }
+    }
+    setSelectedRange(selectedRange) {
+      const locationRange = this.document.locationRangeFromRange(selectedRange);
+      return this.getSelectionManager().setLocationRange(locationRange);
+    }
+    getPosition() {
+      const locationRange = this.getLocationRange();
+      if (locationRange) {
+        return this.document.positionFromLocation(locationRange[0]);
+      }
+    }
+    getLocationRange(options) {
+      if (this.targetLocationRange) {
+        return this.targetLocationRange;
+      } else {
+        return this.getSelectionManager().getLocationRange(options) || normalizeRange({
+          index: 0,
+          offset: 0
+        });
+      }
+    }
+    withTargetLocationRange(locationRange, fn) {
+      let result;
+      this.targetLocationRange = locationRange;
+      try {
+        result = fn();
+      } finally {
+        this.targetLocationRange = null;
+      }
+      return result;
+    }
+    withTargetRange(range, fn) {
+      const locationRange = this.document.locationRangeFromRange(range);
+      return this.withTargetLocationRange(locationRange, fn);
+    }
+    withTargetDOMRange(domRange, fn) {
+      const locationRange = this.createLocationRangeFromDOMRange(domRange, {
+        strict: false
+      });
+      return this.withTargetLocationRange(locationRange, fn);
+    }
+    getExpandedRangeInDirection(direction) {
+      let {
+        length
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let [startPosition, endPosition] = Array.from(this.getSelectedRange());
+      if (direction === "backward") {
+        if (length) {
+          startPosition -= length;
+        } else {
+          startPosition = this.translateUTF16PositionFromOffset(startPosition, -1);
+        }
+      } else {
+        if (length) {
+          endPosition += length;
+        } else {
+          endPosition = this.translateUTF16PositionFromOffset(endPosition, 1);
+        }
+      }
+      return normalizeRange([startPosition, endPosition]);
+    }
+    shouldManageMovingCursorInDirection(direction) {
+      if (this.editingAttachment) {
+        return true;
+      }
+      const range = this.getExpandedRangeInDirection(direction);
+      return this.getAttachmentAtRange(range) != null;
+    }
+    moveCursorInDirection(direction) {
+      let canEditAttachment, range;
+      if (this.editingAttachment) {
+        range = this.document.getRangeOfAttachment(this.editingAttachment);
+      } else {
+        const selectedRange = this.getSelectedRange();
+        range = this.getExpandedRangeInDirection(direction);
+        canEditAttachment = !rangesAreEqual(selectedRange, range);
+      }
+      if (direction === "backward") {
+        this.setSelectedRange(range[0]);
+      } else {
+        this.setSelectedRange(range[1]);
+      }
+      if (canEditAttachment) {
+        const attachment = this.getAttachmentAtRange(range);
+        if (attachment) {
+          return this.editAttachment(attachment);
+        }
+      }
+    }
+    expandSelectionInDirection(direction) {
+      let {
+        length
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      const range = this.getExpandedRangeInDirection(direction, {
+        length
+      });
+      return this.setSelectedRange(range);
+    }
+    expandSelectionForEditing() {
+      if (this.hasCurrentAttribute("href")) {
+        return this.expandSelectionAroundCommonAttribute("href");
+      }
+    }
+    expandSelectionAroundCommonAttribute(attributeName) {
+      const position = this.getPosition();
+      const range = this.document.getRangeOfCommonAttributeAtPosition(attributeName, position);
+      return this.setSelectedRange(range);
+    }
+    selectionContainsAttachments() {
+      var _this$getSelectedAtta;
+      return ((_this$getSelectedAtta = this.getSelectedAttachments()) === null || _this$getSelectedAtta === void 0 ? void 0 : _this$getSelectedAtta.length) > 0;
+    }
+    selectionIsInCursorTarget() {
+      return this.editingAttachment || this.positionIsCursorTarget(this.getPosition());
+    }
+    positionIsCursorTarget(position) {
+      const location = this.document.locationFromPosition(position);
+      if (location) {
+        return this.locationIsCursorTarget(location);
+      }
+    }
+    positionIsBlockBreak(position) {
+      var _this$document$getPie;
+      return (_this$document$getPie = this.document.getPieceAtPosition(position)) === null || _this$document$getPie === void 0 ? void 0 : _this$document$getPie.isBlockBreak();
+    }
+    getSelectedDocument() {
+      const selectedRange = this.getSelectedRange();
+      if (selectedRange) {
+        return this.document.getDocumentAtRange(selectedRange);
+      }
+    }
+    getSelectedAttachments() {
+      var _this$getSelectedDocu;
+      return (_this$getSelectedDocu = this.getSelectedDocument()) === null || _this$getSelectedDocu === void 0 ? void 0 : _this$getSelectedDocu.getAttachments();
+    }
+
+    // Attachments
+
+    getAttachments() {
+      return this.attachments.slice(0);
+    }
+    refreshAttachments() {
+      const attachments = this.document.getAttachments();
+      const {
+        added,
+        removed
+      } = summarizeArrayChange(this.attachments, attachments);
+      this.attachments = attachments;
+      Array.from(removed).forEach(attachment => {
+        var _this$delegate6, _this$delegate6$compo;
+        attachment.delegate = null;
+        (_this$delegate6 = this.delegate) === null || _this$delegate6 === void 0 || (_this$delegate6$compo = _this$delegate6.compositionDidRemoveAttachment) === null || _this$delegate6$compo === void 0 || _this$delegate6$compo.call(_this$delegate6, attachment);
+      });
+      return (() => {
+        const result = [];
+        Array.from(added).forEach(attachment => {
+          var _this$delegate7, _this$delegate7$compo;
+          attachment.delegate = this;
+          result.push((_this$delegate7 = this.delegate) === null || _this$delegate7 === void 0 || (_this$delegate7$compo = _this$delegate7.compositionDidAddAttachment) === null || _this$delegate7$compo === void 0 ? void 0 : _this$delegate7$compo.call(_this$delegate7, attachment));
+        });
+        return result;
+      })();
+    }
+
+    // Attachment delegate
+
+    attachmentDidChangeAttributes(attachment) {
+      var _this$delegate8, _this$delegate8$compo;
+      this.revision++;
+      return (_this$delegate8 = this.delegate) === null || _this$delegate8 === void 0 || (_this$delegate8$compo = _this$delegate8.compositionDidEditAttachment) === null || _this$delegate8$compo === void 0 ? void 0 : _this$delegate8$compo.call(_this$delegate8, attachment);
+    }
+    attachmentDidChangePreviewURL(attachment) {
+      var _this$delegate9, _this$delegate9$compo;
+      this.revision++;
+      return (_this$delegate9 = this.delegate) === null || _this$delegate9 === void 0 || (_this$delegate9$compo = _this$delegate9.compositionDidChangeAttachmentPreviewURL) === null || _this$delegate9$compo === void 0 ? void 0 : _this$delegate9$compo.call(_this$delegate9, attachment);
+    }
+
+    // Attachment editing
+
+    editAttachment(attachment, options) {
+      var _this$delegate10, _this$delegate10$comp;
+      if (attachment === this.editingAttachment) return;
+      this.stopEditingAttachment();
+      this.editingAttachment = attachment;
+      return (_this$delegate10 = this.delegate) === null || _this$delegate10 === void 0 || (_this$delegate10$comp = _this$delegate10.compositionDidStartEditingAttachment) === null || _this$delegate10$comp === void 0 ? void 0 : _this$delegate10$comp.call(_this$delegate10, this.editingAttachment, options);
+    }
+    stopEditingAttachment() {
+      var _this$delegate11, _this$delegate11$comp;
+      if (!this.editingAttachment) return;
+      (_this$delegate11 = this.delegate) === null || _this$delegate11 === void 0 || (_this$delegate11$comp = _this$delegate11.compositionDidStopEditingAttachment) === null || _this$delegate11$comp === void 0 || _this$delegate11$comp.call(_this$delegate11, this.editingAttachment);
+      this.editingAttachment = null;
+    }
+    updateAttributesForAttachment(attributes, attachment) {
+      return this.setDocument(this.document.updateAttributesForAttachment(attributes, attachment));
+    }
+    removeAttributeForAttachment(attribute, attachment) {
+      return this.setDocument(this.document.removeAttributeForAttachment(attribute, attachment));
+    }
+
+    // Private
+
+    breakFormattedBlock(insertion) {
+      let {
+        document
+      } = insertion;
+      const {
+        block
+      } = insertion;
+      let position = insertion.startPosition;
+      let range = [position - 1, position];
+      if (block.getBlockBreakPosition() === insertion.startLocation.offset) {
+        if (block.breaksOnReturn() && insertion.nextCharacter === "\n") {
+          position += 1;
+        } else {
+          document = document.removeTextAtRange(range);
+        }
+        range = [position, position];
+      } else if (insertion.nextCharacter === "\n") {
+        if (insertion.previousCharacter === "\n") {
+          range = [position - 1, position + 1];
+        } else {
+          range = [position, position + 1];
+          position += 1;
+        }
+      } else if (insertion.startLocation.offset - 1 !== 0) {
+        position += 1;
+      }
+      const newDocument = new Document([block.removeLastAttribute().copyWithoutText()]);
+      this.setDocument(document.insertDocumentAtRange(newDocument, range));
+      return this.setSelection(position);
+    }
+    getPreviousBlock() {
+      const locationRange = this.getLocationRange();
+      if (locationRange) {
+        const {
+          index
+        } = locationRange[0];
+        if (index > 0) {
+          return this.document.getBlockAtIndex(index - 1);
+        }
+      }
+    }
+    getBlock() {
+      const locationRange = this.getLocationRange();
+      if (locationRange) {
+        return this.document.getBlockAtIndex(locationRange[0].index);
+      }
+    }
+    getAttachmentAtRange(range) {
+      const document = this.document.getDocumentAtRange(range);
+      if (document.toString() === "".concat(OBJECT_REPLACEMENT_CHARACTER, "\n")) {
+        return document.getAttachments()[0];
+      }
+    }
+    notifyDelegateOfCurrentAttributesChange() {
+      var _this$delegate12, _this$delegate12$comp;
+      return (_this$delegate12 = this.delegate) === null || _this$delegate12 === void 0 || (_this$delegate12$comp = _this$delegate12.compositionDidChangeCurrentAttributes) === null || _this$delegate12$comp === void 0 ? void 0 : _this$delegate12$comp.call(_this$delegate12, this.currentAttributes);
+    }
+    notifyDelegateOfInsertionAtRange(range) {
+      var _this$delegate13, _this$delegate13$comp;
+      return (_this$delegate13 = this.delegate) === null || _this$delegate13 === void 0 || (_this$delegate13$comp = _this$delegate13.compositionDidPerformInsertionAtRange) === null || _this$delegate13$comp === void 0 ? void 0 : _this$delegate13$comp.call(_this$delegate13, range);
+    }
+    translateUTF16PositionFromOffset(position, offset) {
+      const utf16string = this.document.toUTF16String();
+      const utf16position = utf16string.offsetFromUCS2Offset(position);
+      return utf16string.offsetToUCS2Offset(utf16position + offset);
+    }
+  }
+  Composition.proxyMethod("getSelectionManager().getPointRange");
+  Composition.proxyMethod("getSelectionManager().setLocationRangeFromPointRange");
+  Composition.proxyMethod("getSelectionManager().createLocationRangeFromDOMRange");
+  Composition.proxyMethod("getSelectionManager().locationIsCursorTarget");
+  Composition.proxyMethod("getSelectionManager().selectionIsExpanded");
+  Composition.proxyMethod("delegate?.getSelectionManager");
+
+  class UndoManager extends BasicObject {
+    constructor(composition) {
+      super(...arguments);
+      this.composition = composition;
+      this.undoEntries = [];
+      this.redoEntries = [];
+    }
+    recordUndoEntry(description) {
+      let {
+        context,
+        consolidatable
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      const previousEntry = this.undoEntries.slice(-1)[0];
+      if (!consolidatable || !entryHasDescriptionAndContext(previousEntry, description, context)) {
+        const undoEntry = this.createEntry({
+          description,
+          context
+        });
+        this.undoEntries.push(undoEntry);
+        this.redoEntries = [];
+      }
+    }
+    undo() {
+      const undoEntry = this.undoEntries.pop();
+      if (undoEntry) {
+        const redoEntry = this.createEntry(undoEntry);
+        this.redoEntries.push(redoEntry);
+        return this.composition.loadSnapshot(undoEntry.snapshot);
+      }
+    }
+    redo() {
+      const redoEntry = this.redoEntries.pop();
+      if (redoEntry) {
+        const undoEntry = this.createEntry(redoEntry);
+        this.undoEntries.push(undoEntry);
+        return this.composition.loadSnapshot(redoEntry.snapshot);
+      }
+    }
+    canUndo() {
+      return this.undoEntries.length > 0;
+    }
+    canRedo() {
+      return this.redoEntries.length > 0;
+    }
+
+    // Private
+
+    createEntry() {
+      let {
+        description,
+        context
+      } = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      return {
+        description: description === null || description === void 0 ? void 0 : description.toString(),
+        context: JSON.stringify(context),
+        snapshot: this.composition.getSnapshot()
+      };
+    }
+  }
+  const entryHasDescriptionAndContext = (entry, description, context) => (entry === null || entry === void 0 ? void 0 : entry.description) === (description === null || description === void 0 ? void 0 : description.toString()) && (entry === null || entry === void 0 ? void 0 : entry.context) === JSON.stringify(context);
+
+  const BLOCK_ATTRIBUTE_NAME = "attachmentGallery";
+  const TEXT_ATTRIBUTE_NAME = "presentation";
+  const TEXT_ATTRIBUTE_VALUE = "gallery";
+  class Filter {
+    constructor(snapshot) {
+      this.document = snapshot.document;
+      this.selectedRange = snapshot.selectedRange;
+    }
+    perform() {
+      this.removeBlockAttribute();
+      return this.applyBlockAttribute();
+    }
+    getSnapshot() {
+      return {
+        document: this.document,
+        selectedRange: this.selectedRange
+      };
+    }
+
+    // Private
+
+    removeBlockAttribute() {
+      return this.findRangesOfBlocks().map(range => this.document = this.document.removeAttributeAtRange(BLOCK_ATTRIBUTE_NAME, range));
+    }
+    applyBlockAttribute() {
+      let offset = 0;
+      this.findRangesOfPieces().forEach(range => {
+        if (range[1] - range[0] > 1) {
+          range[0] += offset;
+          range[1] += offset;
+          if (this.document.getCharacterAtPosition(range[1]) !== "\n") {
+            this.document = this.document.insertBlockBreakAtRange(range[1]);
+            if (range[1] < this.selectedRange[1]) {
+              this.moveSelectedRangeForward();
+            }
+            range[1]++;
+            offset++;
+          }
+          if (range[0] !== 0) {
+            if (this.document.getCharacterAtPosition(range[0] - 1) !== "\n") {
+              this.document = this.document.insertBlockBreakAtRange(range[0]);
+              if (range[0] < this.selectedRange[0]) {
+                this.moveSelectedRangeForward();
+              }
+              range[0]++;
+              offset++;
+            }
+          }
+          this.document = this.document.applyBlockAttributeAtRange(BLOCK_ATTRIBUTE_NAME, true, range);
+        }
+      });
+    }
+    findRangesOfBlocks() {
+      return this.document.findRangesForBlockAttribute(BLOCK_ATTRIBUTE_NAME);
+    }
+    findRangesOfPieces() {
+      return this.document.findRangesForTextAttribute(TEXT_ATTRIBUTE_NAME, {
+        withValue: TEXT_ATTRIBUTE_VALUE
+      });
+    }
+    moveSelectedRangeForward() {
+      this.selectedRange[0] += 1;
+      this.selectedRange[1] += 1;
+    }
+  }
+
+  const attachmentGalleryFilter = function (snapshot) {
+    const filter = new Filter(snapshot);
+    filter.perform();
+    return filter.getSnapshot();
+  };
+
+  const DEFAULT_FILTERS = [attachmentGalleryFilter];
+  class Editor {
+    constructor(composition, selectionManager, element) {
+      this.insertFiles = this.insertFiles.bind(this);
+      this.composition = composition;
+      this.selectionManager = selectionManager;
+      this.element = element;
+      this.undoManager = new UndoManager(this.composition);
+      this.filters = DEFAULT_FILTERS.slice(0);
+    }
+    loadDocument(document) {
+      return this.loadSnapshot({
+        document,
+        selectedRange: [0, 0]
+      });
+    }
+    loadHTML() {
+      let html = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "";
+      const document = HTMLParser.parse(html, {
+        referenceElement: this.element
+      }).getDocument();
+      return this.loadDocument(document);
+    }
+    loadJSON(_ref) {
+      let {
+        document,
+        selectedRange
+      } = _ref;
+      document = Document.fromJSON(document);
+      return this.loadSnapshot({
+        document,
+        selectedRange
+      });
+    }
+    loadSnapshot(snapshot) {
+      this.undoManager = new UndoManager(this.composition);
+      return this.composition.loadSnapshot(snapshot);
+    }
+    getDocument() {
+      return this.composition.document;
+    }
+    getSelectedDocument() {
+      return this.composition.getSelectedDocument();
+    }
+    getSnapshot() {
+      return this.composition.getSnapshot();
+    }
+    toJSON() {
+      return this.getSnapshot();
+    }
+
+    // Document manipulation
+
+    deleteInDirection(direction) {
+      return this.composition.deleteInDirection(direction);
+    }
+    insertAttachment(attachment) {
+      return this.composition.insertAttachment(attachment);
+    }
+    insertAttachments(attachments) {
+      return this.composition.insertAttachments(attachments);
+    }
+    insertDocument(document) {
+      return this.composition.insertDocument(document);
+    }
+    insertFile(file) {
+      return this.composition.insertFile(file);
+    }
+    insertFiles(files) {
+      return this.composition.insertFiles(files);
+    }
+    insertHTML(html) {
+      return this.composition.insertHTML(html);
+    }
+    insertString(string) {
+      return this.composition.insertString(string);
+    }
+    insertText(text) {
+      return this.composition.insertText(text);
+    }
+    insertLineBreak() {
+      return this.composition.insertLineBreak();
+    }
+
+    // Selection
+
+    getSelectedRange() {
+      return this.composition.getSelectedRange();
+    }
+    getPosition() {
+      return this.composition.getPosition();
+    }
+    getClientRectAtPosition(position) {
+      const locationRange = this.getDocument().locationRangeFromRange([position, position + 1]);
+      return this.selectionManager.getClientRectAtLocationRange(locationRange);
+    }
+    expandSelectionInDirection(direction) {
+      return this.composition.expandSelectionInDirection(direction);
+    }
+    moveCursorInDirection(direction) {
+      return this.composition.moveCursorInDirection(direction);
+    }
+    setSelectedRange(selectedRange) {
+      return this.composition.setSelectedRange(selectedRange);
+    }
+
+    // Attributes
+
+    activateAttribute(name) {
+      let value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
+      return this.composition.setCurrentAttribute(name, value);
+    }
+    attributeIsActive(name) {
+      return this.composition.hasCurrentAttribute(name);
+    }
+    canActivateAttribute(name) {
+      return this.composition.canSetCurrentAttribute(name);
+    }
+    deactivateAttribute(name) {
+      return this.composition.removeCurrentAttribute(name);
+    }
+
+    // HTML attributes
+    setHTMLAtributeAtPosition(position, name, value) {
+      this.composition.setHTMLAtributeAtPosition(position, name, value);
+    }
+
+    // Nesting level
+
+    canDecreaseNestingLevel() {
+      return this.composition.canDecreaseNestingLevel();
+    }
+    canIncreaseNestingLevel() {
+      return this.composition.canIncreaseNestingLevel();
+    }
+    decreaseNestingLevel() {
+      if (this.canDecreaseNestingLevel()) {
+        return this.composition.decreaseNestingLevel();
+      }
+    }
+    increaseNestingLevel() {
+      if (this.canIncreaseNestingLevel()) {
+        return this.composition.increaseNestingLevel();
+      }
+    }
+
+    // Undo/redo
+
+    canRedo() {
+      return this.undoManager.canRedo();
+    }
+    canUndo() {
+      return this.undoManager.canUndo();
+    }
+    recordUndoEntry(description) {
+      let {
+        context,
+        consolidatable
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      return this.undoManager.recordUndoEntry(description, {
+        context,
+        consolidatable
+      });
+    }
+    redo() {
+      if (this.canRedo()) {
+        return this.undoManager.redo();
+      }
+    }
+    undo() {
+      if (this.canUndo()) {
+        return this.undoManager.undo();
+      }
+    }
+  }
+
+  /* eslint-disable
+      no-var,
+      prefer-const,
+  */
+  class LocationMapper {
+    constructor(element) {
+      this.element = element;
+    }
+    findLocationFromContainerAndOffset(container, offset) {
+      let {
+        strict
+      } = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {
+        strict: true
+      };
+      let childIndex = 0;
+      let foundBlock = false;
+      const location = {
+        index: 0,
+        offset: 0
+      };
+      const attachmentElement = this.findAttachmentElementParentForNode(container);
+      if (attachmentElement) {
+        container = attachmentElement.parentNode;
+        offset = findChildIndexOfNode(attachmentElement);
+      }
+      const walker = walkTree(this.element, {
+        usingFilter: rejectAttachmentContents
+      });
+      while (walker.nextNode()) {
+        const node = walker.currentNode;
+        if (node === container && nodeIsTextNode(container)) {
+          if (!nodeIsCursorTarget(node)) {
+            location.offset += offset;
+          }
+          break;
+        } else {
+          if (node.parentNode === container) {
+            if (childIndex++ === offset) {
+              break;
+            }
+          } else if (!elementContainsNode(container, node)) {
+            if (childIndex > 0) {
+              break;
+            }
+          }
+          if (nodeIsBlockStart(node, {
+            strict
+          })) {
+            if (foundBlock) {
+              location.index++;
+            }
+            location.offset = 0;
+            foundBlock = true;
+          } else {
+            location.offset += nodeLength(node);
+          }
+        }
+      }
+      return location;
+    }
+    findContainerAndOffsetFromLocation(location) {
+      let container, offset;
+      if (location.index === 0 && location.offset === 0) {
+        container = this.element;
+        offset = 0;
+        while (container.firstChild) {
+          container = container.firstChild;
+          if (nodeIsBlockContainer(container)) {
+            offset = 1;
+            break;
+          }
+        }
+        return [container, offset];
+      }
+      let [node, nodeOffset] = this.findNodeAndOffsetFromLocation(location);
+      if (!node) return;
+      if (nodeIsTextNode(node)) {
+        if (nodeLength(node) === 0) {
+          container = node.parentNode.parentNode;
+          offset = findChildIndexOfNode(node.parentNode);
+          if (nodeIsCursorTarget(node, {
+            name: "right"
+          })) {
+            offset++;
+          }
+        } else {
+          container = node;
+          offset = location.offset - nodeOffset;
+        }
+      } else {
+        container = node.parentNode;
+        if (!nodeIsBlockStart(node.previousSibling)) {
+          if (!nodeIsBlockContainer(container)) {
+            while (node === container.lastChild) {
+              node = container;
+              container = container.parentNode;
+              if (nodeIsBlockContainer(container)) {
+                break;
+              }
+            }
+          }
+        }
+        offset = findChildIndexOfNode(node);
+        if (location.offset !== 0) {
+          offset++;
+        }
+      }
+      return [container, offset];
+    }
+    findNodeAndOffsetFromLocation(location) {
+      let node, nodeOffset;
+      let offset = 0;
+      for (const currentNode of this.getSignificantNodesForIndex(location.index)) {
+        const length = nodeLength(currentNode);
+        if (location.offset <= offset + length) {
+          if (nodeIsTextNode(currentNode)) {
+            node = currentNode;
+            nodeOffset = offset;
+            if (location.offset === nodeOffset && nodeIsCursorTarget(node)) {
+              break;
+            }
+          } else if (!node) {
+            node = currentNode;
+            nodeOffset = offset;
+          }
+        }
+        offset += length;
+        if (offset > location.offset) {
+          break;
+        }
+      }
+      return [node, nodeOffset];
+    }
+
+    // Private
+
+    findAttachmentElementParentForNode(node) {
+      while (node && node !== this.element) {
+        if (nodeIsAttachmentElement(node)) {
+          return node;
+        }
+        node = node.parentNode;
+      }
+    }
+    getSignificantNodesForIndex(index) {
+      const nodes = [];
+      const walker = walkTree(this.element, {
+        usingFilter: acceptSignificantNodes
+      });
+      let recordingNodes = false;
+      while (walker.nextNode()) {
+        const node = walker.currentNode;
+        if (nodeIsBlockStartComment(node)) {
+          var blockIndex;
+          if (blockIndex != null) {
+            blockIndex++;
+          } else {
+            blockIndex = 0;
+          }
+          if (blockIndex === index) {
+            recordingNodes = true;
+          } else if (recordingNodes) {
+            break;
+          }
+        } else if (recordingNodes) {
+          nodes.push(node);
+        }
+      }
+      return nodes;
+    }
+  }
+  const nodeLength = function (node) {
+    if (node.nodeType === Node.TEXT_NODE) {
+      if (nodeIsCursorTarget(node)) {
+        return 0;
+      } else {
+        const string = node.textContent;
+        return string.length;
+      }
+    } else if (tagName(node) === "br" || nodeIsAttachmentElement(node)) {
+      return 1;
+    } else {
+      return 0;
+    }
+  };
+  const acceptSignificantNodes = function (node) {
+    if (rejectEmptyTextNodes(node) === NodeFilter.FILTER_ACCEPT) {
+      return rejectAttachmentContents(node);
+    } else {
+      return NodeFilter.FILTER_REJECT;
+    }
+  };
+  const rejectEmptyTextNodes = function (node) {
+    if (nodeIsEmptyTextNode(node)) {
+      return NodeFilter.FILTER_REJECT;
+    } else {
+      return NodeFilter.FILTER_ACCEPT;
+    }
+  };
+  const rejectAttachmentContents = function (node) {
+    if (nodeIsAttachmentElement(node.parentNode)) {
+      return NodeFilter.FILTER_REJECT;
+    } else {
+      return NodeFilter.FILTER_ACCEPT;
+    }
+  };
+
+  /* eslint-disable
+      id-length,
+      no-empty,
+  */
+  class PointMapper {
+    createDOMRangeFromPoint(_ref) {
+      let {
+        x,
+        y
+      } = _ref;
+      let domRange;
+      if (document.caretPositionFromPoint) {
+        const {
+          offsetNode,
+          offset
+        } = document.caretPositionFromPoint(x, y);
+        domRange = document.createRange();
+        domRange.setStart(offsetNode, offset);
+        return domRange;
+      } else if (document.caretRangeFromPoint) {
+        return document.caretRangeFromPoint(x, y);
+      } else if (document.body.createTextRange) {
+        const originalDOMRange = getDOMRange();
+        try {
+          // IE 11 throws "Unspecified error" when using moveToPoint
+          // during a drag-and-drop operation.
+          const textRange = document.body.createTextRange();
+          textRange.moveToPoint(x, y);
+          textRange.select();
+        } catch (error) {}
+        domRange = getDOMRange();
+        setDOMRange(originalDOMRange);
+        return domRange;
+      }
+    }
+    getClientRectsForDOMRange(domRange) {
+      const array = Array.from(domRange.getClientRects());
+      const start = array[0];
+      const end = array[array.length - 1];
+      return [start, end];
+    }
+  }
+
+  /* eslint-disable
+  */
+  class SelectionManager extends BasicObject {
+    constructor(element) {
+      super(...arguments);
+      this.didMouseDown = this.didMouseDown.bind(this);
+      this.selectionDidChange = this.selectionDidChange.bind(this);
+      this.element = element;
+      this.locationMapper = new LocationMapper(this.element);
+      this.pointMapper = new PointMapper();
+      this.lockCount = 0;
+      handleEvent("mousedown", {
+        onElement: this.element,
+        withCallback: this.didMouseDown
+      });
+    }
+    getLocationRange() {
+      let options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      if (options.strict === false) {
+        return this.createLocationRangeFromDOMRange(getDOMRange());
+      } else if (options.ignoreLock) {
+        return this.currentLocationRange;
+      } else if (this.lockedLocationRange) {
+        return this.lockedLocationRange;
+      } else {
+        return this.currentLocationRange;
+      }
+    }
+    setLocationRange(locationRange) {
+      if (this.lockedLocationRange) return;
+      locationRange = normalizeRange(locationRange);
+      const domRange = this.createDOMRangeFromLocationRange(locationRange);
+      if (domRange) {
+        setDOMRange(domRange);
+        this.updateCurrentLocationRange(locationRange);
+      }
+    }
+    setLocationRangeFromPointRange(pointRange) {
+      pointRange = normalizeRange(pointRange);
+      const startLocation = this.getLocationAtPoint(pointRange[0]);
+      const endLocation = this.getLocationAtPoint(pointRange[1]);
+      this.setLocationRange([startLocation, endLocation]);
+    }
+    getClientRectAtLocationRange(locationRange) {
+      const domRange = this.createDOMRangeFromLocationRange(locationRange);
+      if (domRange) {
+        return this.getClientRectsForDOMRange(domRange)[1];
+      }
+    }
+    locationIsCursorTarget(location) {
+      const node = Array.from(this.findNodeAndOffsetFromLocation(location))[0];
+      return nodeIsCursorTarget(node);
+    }
+    lock() {
+      if (this.lockCount++ === 0) {
+        this.updateCurrentLocationRange();
+        this.lockedLocationRange = this.getLocationRange();
+      }
+    }
+    unlock() {
+      if (--this.lockCount === 0) {
+        const {
+          lockedLocationRange
+        } = this;
+        this.lockedLocationRange = null;
+        if (lockedLocationRange != null) {
+          return this.setLocationRange(lockedLocationRange);
+        }
+      }
+    }
+    clearSelection() {
+      var _getDOMSelection;
+      return (_getDOMSelection = getDOMSelection()) === null || _getDOMSelection === void 0 ? void 0 : _getDOMSelection.removeAllRanges();
+    }
+    selectionIsCollapsed() {
+      var _getDOMRange;
+      return ((_getDOMRange = getDOMRange()) === null || _getDOMRange === void 0 ? void 0 : _getDOMRange.collapsed) === true;
+    }
+    selectionIsExpanded() {
+      return !this.selectionIsCollapsed();
+    }
+    createLocationRangeFromDOMRange(domRange, options) {
+      if (domRange == null || !this.domRangeWithinElement(domRange)) return;
+      const start = this.findLocationFromContainerAndOffset(domRange.startContainer, domRange.startOffset, options);
+      if (!start) return;
+      const end = domRange.collapsed ? undefined : this.findLocationFromContainerAndOffset(domRange.endContainer, domRange.endOffset, options);
+      return normalizeRange([start, end]);
+    }
+    didMouseDown() {
+      return this.pauseTemporarily();
+    }
+    pauseTemporarily() {
+      let resumeHandlers;
+      this.paused = true;
+      const resume = () => {
+        this.paused = false;
+        clearTimeout(resumeTimeout);
+        Array.from(resumeHandlers).forEach(handler => {
+          handler.destroy();
+        });
+        if (elementContainsNode(document, this.element)) {
+          return this.selectionDidChange();
+        }
+      };
+      const resumeTimeout = setTimeout(resume, 200);
+      resumeHandlers = ["mousemove", "keydown"].map(eventName => handleEvent(eventName, {
+        onElement: document,
+        withCallback: resume
+      }));
+    }
+    selectionDidChange() {
+      if (!this.paused && !innerElementIsActive(this.element)) {
+        return this.updateCurrentLocationRange();
+      }
+    }
+    updateCurrentLocationRange(locationRange) {
+      if (locationRange != null ? locationRange : locationRange = this.createLocationRangeFromDOMRange(getDOMRange())) {
+        if (!rangesAreEqual(locationRange, this.currentLocationRange)) {
+          var _this$delegate, _this$delegate$locati;
+          this.currentLocationRange = locationRange;
+          return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$locati = _this$delegate.locationRangeDidChange) === null || _this$delegate$locati === void 0 ? void 0 : _this$delegate$locati.call(_this$delegate, this.currentLocationRange.slice(0));
+        }
+      }
+    }
+    createDOMRangeFromLocationRange(locationRange) {
+      const rangeStart = this.findContainerAndOffsetFromLocation(locationRange[0]);
+      const rangeEnd = rangeIsCollapsed(locationRange) ? rangeStart : this.findContainerAndOffsetFromLocation(locationRange[1]) || rangeStart;
+      if (rangeStart != null && rangeEnd != null) {
+        const domRange = document.createRange();
+        domRange.setStart(...Array.from(rangeStart || []));
+        domRange.setEnd(...Array.from(rangeEnd || []));
+        return domRange;
+      }
+    }
+    getLocationAtPoint(point) {
+      const domRange = this.createDOMRangeFromPoint(point);
+      if (domRange) {
+        var _this$createLocationR;
+        return (_this$createLocationR = this.createLocationRangeFromDOMRange(domRange)) === null || _this$createLocationR === void 0 ? void 0 : _this$createLocationR[0];
+      }
+    }
+    domRangeWithinElement(domRange) {
+      if (domRange.collapsed) {
+        return elementContainsNode(this.element, domRange.startContainer);
+      } else {
+        return elementContainsNode(this.element, domRange.startContainer) && elementContainsNode(this.element, domRange.endContainer);
+      }
+    }
+  }
+  SelectionManager.proxyMethod("locationMapper.findLocationFromContainerAndOffset");
+  SelectionManager.proxyMethod("locationMapper.findContainerAndOffsetFromLocation");
+  SelectionManager.proxyMethod("locationMapper.findNodeAndOffsetFromLocation");
+  SelectionManager.proxyMethod("pointMapper.createDOMRangeFromPoint");
+  SelectionManager.proxyMethod("pointMapper.getClientRectsForDOMRange");
+
+  var models = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    Attachment: Attachment,
+    AttachmentManager: AttachmentManager,
+    AttachmentPiece: AttachmentPiece,
+    Block: Block,
+    Composition: Composition,
+    Document: Document,
+    Editor: Editor,
+    HTMLParser: HTMLParser,
+    HTMLSanitizer: HTMLSanitizer,
+    LineBreakInsertion: LineBreakInsertion,
+    LocationMapper: LocationMapper,
+    ManagedAttachment: ManagedAttachment,
+    Piece: Piece,
+    PointMapper: PointMapper,
+    SelectionManager: SelectionManager,
+    SplittableList: SplittableList,
+    StringPiece: StringPiece,
+    Text: Text,
+    UndoManager: UndoManager
+  });
+
+  var views = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    ObjectView: ObjectView,
+    AttachmentView: AttachmentView,
+    BlockView: BlockView,
+    DocumentView: DocumentView,
+    PieceView: PieceView,
+    PreviewableAttachmentView: PreviewableAttachmentView,
+    TextView: TextView
+  });
+
+  const {
+    lang,
+    css,
+    keyNames: keyNames$1
+  } = config;
+  const undoable = function (fn) {
+    return function () {
+      const commands = fn.apply(this, arguments);
+      commands.do();
+      if (!this.undos) {
+        this.undos = [];
+      }
+      this.undos.push(commands.undo);
+    };
+  };
+  class AttachmentEditorController extends BasicObject {
+    constructor(attachmentPiece, _element, container) {
+      let options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
+      super(...arguments);
+      // Installing and uninstalling
+      _defineProperty(this, "makeElementMutable", undoable(() => {
+        return {
+          do: () => {
+            this.element.dataset.trixMutable = true;
+          },
+          undo: () => delete this.element.dataset.trixMutable
+        };
+      }));
+      _defineProperty(this, "addToolbar", undoable(() => {
+        // <div class="#{css.attachmentMetadataContainer}" data-trix-mutable="true">
+        //   <div class="trix-button-row">
+        //     <span class="trix-button-group trix-button-group--actions">
+        //       <button type="button" class="trix-button trix-button--remove" title="#{lang.remove}" data-trix-action="remove">#{lang.remove}</button>
+        //     </span>
+        //   </div>
+        // </div>
+        const element = makeElement({
+          tagName: "div",
+          className: css.attachmentToolbar,
+          data: {
+            trixMutable: true
+          },
+          childNodes: makeElement({
+            tagName: "div",
+            className: "trix-button-row",
+            childNodes: makeElement({
+              tagName: "span",
+              className: "trix-button-group trix-button-group--actions",
+              childNodes: makeElement({
+                tagName: "button",
+                className: "trix-button trix-button--remove",
+                textContent: lang.remove,
+                attributes: {
+                  title: lang.remove
+                },
+                data: {
+                  trixAction: "remove"
+                }
+              })
+            })
+          })
+        });
+        if (this.attachment.isPreviewable()) {
+          // <div class="#{css.attachmentMetadataContainer}">
+          //   <span class="#{css.attachmentMetadata}">
+          //     <span class="#{css.attachmentName}" title="#{name}">#{name}</span>
+          //     <span class="#{css.attachmentSize}">#{size}</span>
+          //   </span>
+          // </div>
+          element.appendChild(makeElement({
+            tagName: "div",
+            className: css.attachmentMetadataContainer,
+            childNodes: makeElement({
+              tagName: "span",
+              className: css.attachmentMetadata,
+              childNodes: [makeElement({
+                tagName: "span",
+                className: css.attachmentName,
+                textContent: this.attachment.getFilename(),
+                attributes: {
+                  title: this.attachment.getFilename()
+                }
+              }), makeElement({
+                tagName: "span",
+                className: css.attachmentSize,
+                textContent: this.attachment.getFormattedFilesize()
+              })]
+            })
+          }));
+        }
+        handleEvent("click", {
+          onElement: element,
+          withCallback: this.didClickToolbar
+        });
+        handleEvent("click", {
+          onElement: element,
+          matchingSelector: "[data-trix-action]",
+          withCallback: this.didClickActionButton
+        });
+        triggerEvent("trix-attachment-before-toolbar", {
+          onElement: this.element,
+          attributes: {
+            toolbar: element,
+            attachment: this.attachment
+          }
+        });
+        return {
+          do: () => this.element.appendChild(element),
+          undo: () => removeNode(element)
+        };
+      }));
+      _defineProperty(this, "installCaptionEditor", undoable(() => {
+        const textarea = makeElement({
+          tagName: "textarea",
+          className: css.attachmentCaptionEditor,
+          attributes: {
+            placeholder: lang.captionPlaceholder
+          },
+          data: {
+            trixMutable: true
+          }
+        });
+        textarea.value = this.attachmentPiece.getCaption();
+        const textareaClone = textarea.cloneNode();
+        textareaClone.classList.add("trix-autoresize-clone");
+        textareaClone.tabIndex = -1;
+        const autoresize = function () {
+          textareaClone.value = textarea.value;
+          textarea.style.height = textareaClone.scrollHeight + "px";
+        };
+        handleEvent("input", {
+          onElement: textarea,
+          withCallback: autoresize
+        });
+        handleEvent("input", {
+          onElement: textarea,
+          withCallback: this.didInputCaption
+        });
+        handleEvent("keydown", {
+          onElement: textarea,
+          withCallback: this.didKeyDownCaption
+        });
+        handleEvent("change", {
+          onElement: textarea,
+          withCallback: this.didChangeCaption
+        });
+        handleEvent("blur", {
+          onElement: textarea,
+          withCallback: this.didBlurCaption
+        });
+        const figcaption = this.element.querySelector("figcaption");
+        const editingFigcaption = figcaption.cloneNode();
+        return {
+          do: () => {
+            figcaption.style.display = "none";
+            editingFigcaption.appendChild(textarea);
+            editingFigcaption.appendChild(textareaClone);
+            editingFigcaption.classList.add("".concat(css.attachmentCaption, "--editing"));
+            figcaption.parentElement.insertBefore(editingFigcaption, figcaption);
+            autoresize();
+            if (this.options.editCaption) {
+              return defer(() => textarea.focus());
+            }
+          },
+          undo() {
+            removeNode(editingFigcaption);
+            figcaption.style.display = null;
+          }
+        };
+      }));
+      this.didClickToolbar = this.didClickToolbar.bind(this);
+      this.didClickActionButton = this.didClickActionButton.bind(this);
+      this.didKeyDownCaption = this.didKeyDownCaption.bind(this);
+      this.didInputCaption = this.didInputCaption.bind(this);
+      this.didChangeCaption = this.didChangeCaption.bind(this);
+      this.didBlurCaption = this.didBlurCaption.bind(this);
+      this.attachmentPiece = attachmentPiece;
+      this.element = _element;
+      this.container = container;
+      this.options = options;
+      this.attachment = this.attachmentPiece.attachment;
+      if (tagName(this.element) === "a") {
+        this.element = this.element.firstChild;
+      }
+      this.install();
+    }
+    install() {
+      this.makeElementMutable();
+      this.addToolbar();
+      if (this.attachment.isPreviewable()) {
+        this.installCaptionEditor();
+      }
+    }
+    uninstall() {
+      var _this$delegate;
+      let undo = this.undos.pop();
+      this.savePendingCaption();
+      while (undo) {
+        undo();
+        undo = this.undos.pop();
+      }
+      (_this$delegate = this.delegate) === null || _this$delegate === void 0 || _this$delegate.didUninstallAttachmentEditor(this);
+    }
+
+    // Private
+
+    savePendingCaption() {
+      if (this.pendingCaption != null) {
+        const caption = this.pendingCaption;
+        this.pendingCaption = null;
+        if (caption) {
+          var _this$delegate2, _this$delegate2$attac;
+          (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || (_this$delegate2$attac = _this$delegate2.attachmentEditorDidRequestUpdatingAttributesForAttachment) === null || _this$delegate2$attac === void 0 || _this$delegate2$attac.call(_this$delegate2, {
+            caption
+          }, this.attachment);
+        } else {
+          var _this$delegate3, _this$delegate3$attac;
+          (_this$delegate3 = this.delegate) === null || _this$delegate3 === void 0 || (_this$delegate3$attac = _this$delegate3.attachmentEditorDidRequestRemovingAttributeForAttachment) === null || _this$delegate3$attac === void 0 || _this$delegate3$attac.call(_this$delegate3, "caption", this.attachment);
+        }
+      }
+    }
+    // Event handlers
+
+    didClickToolbar(event) {
+      event.preventDefault();
+      return event.stopPropagation();
+    }
+    didClickActionButton(event) {
+      var _this$delegate4;
+      const action = event.target.getAttribute("data-trix-action");
+      switch (action) {
+        case "remove":
+          return (_this$delegate4 = this.delegate) === null || _this$delegate4 === void 0 ? void 0 : _this$delegate4.attachmentEditorDidRequestRemovalOfAttachment(this.attachment);
+      }
+    }
+    didKeyDownCaption(event) {
+      if (keyNames$1[event.keyCode] === "return") {
+        var _this$delegate5, _this$delegate5$attac;
+        event.preventDefault();
+        this.savePendingCaption();
+        return (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 || (_this$delegate5$attac = _this$delegate5.attachmentEditorDidRequestDeselectingAttachment) === null || _this$delegate5$attac === void 0 ? void 0 : _this$delegate5$attac.call(_this$delegate5, this.attachment);
+      }
+    }
+    didInputCaption(event) {
+      this.pendingCaption = event.target.value.replace(/\s/g, " ").trim();
+    }
+    didChangeCaption(event) {
+      return this.savePendingCaption();
+    }
+    didBlurCaption(event) {
+      return this.savePendingCaption();
+    }
+  }
+
+  class CompositionController extends BasicObject {
+    constructor(element, composition) {
+      super(...arguments);
+      this.didFocus = this.didFocus.bind(this);
+      this.didBlur = this.didBlur.bind(this);
+      this.didClickAttachment = this.didClickAttachment.bind(this);
+      this.element = element;
+      this.composition = composition;
+      this.documentView = new DocumentView(this.composition.document, {
+        element: this.element
+      });
+      handleEvent("focus", {
+        onElement: this.element,
+        withCallback: this.didFocus
+      });
+      handleEvent("blur", {
+        onElement: this.element,
+        withCallback: this.didBlur
+      });
+      handleEvent("click", {
+        onElement: this.element,
+        matchingSelector: "a[contenteditable=false]",
+        preventDefault: true
+      });
+      handleEvent("mousedown", {
+        onElement: this.element,
+        matchingSelector: attachmentSelector,
+        withCallback: this.didClickAttachment
+      });
+      handleEvent("click", {
+        onElement: this.element,
+        matchingSelector: "a".concat(attachmentSelector),
+        preventDefault: true
+      });
+    }
+    didFocus(event) {
+      var _this$blurPromise;
+      const perform = () => {
+        if (!this.focused) {
+          var _this$delegate, _this$delegate$compos;
+          this.focused = true;
+          return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$compos = _this$delegate.compositionControllerDidFocus) === null || _this$delegate$compos === void 0 ? void 0 : _this$delegate$compos.call(_this$delegate);
+        }
+      };
+      return ((_this$blurPromise = this.blurPromise) === null || _this$blurPromise === void 0 ? void 0 : _this$blurPromise.then(perform)) || perform();
+    }
+    didBlur(event) {
+      this.blurPromise = new Promise(resolve => {
+        return defer(() => {
+          if (!innerElementIsActive(this.element)) {
+            var _this$delegate2, _this$delegate2$compo;
+            this.focused = null;
+            (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || (_this$delegate2$compo = _this$delegate2.compositionControllerDidBlur) === null || _this$delegate2$compo === void 0 || _this$delegate2$compo.call(_this$delegate2);
+          }
+          this.blurPromise = null;
+          return resolve();
+        });
+      });
+    }
+    didClickAttachment(event, target) {
+      var _this$delegate3, _this$delegate3$compo;
+      const attachment = this.findAttachmentForElement(target);
+      const editCaption = !!findClosestElementFromNode(event.target, {
+        matchingSelector: "figcaption"
+      });
+      return (_this$delegate3 = this.delegate) === null || _this$delegate3 === void 0 || (_this$delegate3$compo = _this$delegate3.compositionControllerDidSelectAttachment) === null || _this$delegate3$compo === void 0 ? void 0 : _this$delegate3$compo.call(_this$delegate3, attachment, {
+        editCaption
+      });
+    }
+    getSerializableElement() {
+      if (this.isEditingAttachment()) {
+        return this.documentView.shadowElement;
+      } else {
+        return this.element;
+      }
+    }
+    render() {
+      var _this$delegate6, _this$delegate6$compo;
+      if (this.revision !== this.composition.revision) {
+        this.documentView.setDocument(this.composition.document);
+        this.documentView.render();
+        this.revision = this.composition.revision;
+      }
+      if (this.canSyncDocumentView() && !this.documentView.isSynced()) {
+        var _this$delegate4, _this$delegate4$compo, _this$delegate5, _this$delegate5$compo;
+        (_this$delegate4 = this.delegate) === null || _this$delegate4 === void 0 || (_this$delegate4$compo = _this$delegate4.compositionControllerWillSyncDocumentView) === null || _this$delegate4$compo === void 0 || _this$delegate4$compo.call(_this$delegate4);
+        this.documentView.sync();
+        (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 || (_this$delegate5$compo = _this$delegate5.compositionControllerDidSyncDocumentView) === null || _this$delegate5$compo === void 0 || _this$delegate5$compo.call(_this$delegate5);
+      }
+      return (_this$delegate6 = this.delegate) === null || _this$delegate6 === void 0 || (_this$delegate6$compo = _this$delegate6.compositionControllerDidRender) === null || _this$delegate6$compo === void 0 ? void 0 : _this$delegate6$compo.call(_this$delegate6);
+    }
+    rerenderViewForObject(object) {
+      this.invalidateViewForObject(object);
+      return this.render();
+    }
+    invalidateViewForObject(object) {
+      return this.documentView.invalidateViewForObject(object);
+    }
+    isViewCachingEnabled() {
+      return this.documentView.isViewCachingEnabled();
+    }
+    enableViewCaching() {
+      return this.documentView.enableViewCaching();
+    }
+    disableViewCaching() {
+      return this.documentView.disableViewCaching();
+    }
+    refreshViewCache() {
+      return this.documentView.garbageCollectCachedViews();
+    }
+
+    // Attachment editor management
+
+    isEditingAttachment() {
+      return !!this.attachmentEditor;
+    }
+    installAttachmentEditorForAttachment(attachment, options) {
+      var _this$attachmentEdito;
+      if (((_this$attachmentEdito = this.attachmentEditor) === null || _this$attachmentEdito === void 0 ? void 0 : _this$attachmentEdito.attachment) === attachment) return;
+      const element = this.documentView.findElementForObject(attachment);
+      if (!element) return;
+      this.uninstallAttachmentEditor();
+      const attachmentPiece = this.composition.document.getAttachmentPieceForAttachment(attachment);
+      this.attachmentEditor = new AttachmentEditorController(attachmentPiece, element, this.element, options);
+      this.attachmentEditor.delegate = this;
+    }
+    uninstallAttachmentEditor() {
+      var _this$attachmentEdito2;
+      return (_this$attachmentEdito2 = this.attachmentEditor) === null || _this$attachmentEdito2 === void 0 ? void 0 : _this$attachmentEdito2.uninstall();
+    }
+
+    // Attachment controller delegate
+
+    didUninstallAttachmentEditor() {
+      this.attachmentEditor = null;
+      return this.render();
+    }
+    attachmentEditorDidRequestUpdatingAttributesForAttachment(attributes, attachment) {
+      var _this$delegate7, _this$delegate7$compo;
+      (_this$delegate7 = this.delegate) === null || _this$delegate7 === void 0 || (_this$delegate7$compo = _this$delegate7.compositionControllerWillUpdateAttachment) === null || _this$delegate7$compo === void 0 || _this$delegate7$compo.call(_this$delegate7, attachment);
+      return this.composition.updateAttributesForAttachment(attributes, attachment);
+    }
+    attachmentEditorDidRequestRemovingAttributeForAttachment(attribute, attachment) {
+      var _this$delegate8, _this$delegate8$compo;
+      (_this$delegate8 = this.delegate) === null || _this$delegate8 === void 0 || (_this$delegate8$compo = _this$delegate8.compositionControllerWillUpdateAttachment) === null || _this$delegate8$compo === void 0 || _this$delegate8$compo.call(_this$delegate8, attachment);
+      return this.composition.removeAttributeForAttachment(attribute, attachment);
+    }
+    attachmentEditorDidRequestRemovalOfAttachment(attachment) {
+      var _this$delegate9, _this$delegate9$compo;
+      return (_this$delegate9 = this.delegate) === null || _this$delegate9 === void 0 || (_this$delegate9$compo = _this$delegate9.compositionControllerDidRequestRemovalOfAttachment) === null || _this$delegate9$compo === void 0 ? void 0 : _this$delegate9$compo.call(_this$delegate9, attachment);
+    }
+    attachmentEditorDidRequestDeselectingAttachment(attachment) {
+      var _this$delegate10, _this$delegate10$comp;
+      return (_this$delegate10 = this.delegate) === null || _this$delegate10 === void 0 || (_this$delegate10$comp = _this$delegate10.compositionControllerDidRequestDeselectingAttachment) === null || _this$delegate10$comp === void 0 ? void 0 : _this$delegate10$comp.call(_this$delegate10, attachment);
+    }
+
+    // Private
+
+    canSyncDocumentView() {
+      return !this.isEditingAttachment();
+    }
+    findAttachmentForElement(element) {
+      return this.composition.document.getAttachmentById(parseInt(element.dataset.trixId, 10));
+    }
+  }
+
+  class Controller extends BasicObject {}
+
+  const mutableAttributeName = "data-trix-mutable";
+  const mutableSelector = "[".concat(mutableAttributeName, "]");
+  const options = {
+    attributes: true,
+    childList: true,
+    characterData: true,
+    characterDataOldValue: true,
+    subtree: true
+  };
+  class MutationObserver extends BasicObject {
+    constructor(element) {
+      super(element);
+      this.didMutate = this.didMutate.bind(this);
+      this.element = element;
+      this.observer = new window.MutationObserver(this.didMutate);
+      this.start();
+    }
+    start() {
+      this.reset();
+      return this.observer.observe(this.element, options);
+    }
+    stop() {
+      return this.observer.disconnect();
+    }
+    didMutate(mutations) {
+      this.mutations.push(...Array.from(this.findSignificantMutations(mutations) || []));
+      if (this.mutations.length) {
+        var _this$delegate, _this$delegate$elemen;
+        (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$elemen = _this$delegate.elementDidMutate) === null || _this$delegate$elemen === void 0 || _this$delegate$elemen.call(_this$delegate, this.getMutationSummary());
+        return this.reset();
+      }
+    }
+
+    // Private
+
+    reset() {
+      this.mutations = [];
+    }
+    findSignificantMutations(mutations) {
+      return mutations.filter(mutation => {
+        return this.mutationIsSignificant(mutation);
+      });
+    }
+    mutationIsSignificant(mutation) {
+      if (this.nodeIsMutable(mutation.target)) {
+        return false;
+      }
+      for (const node of Array.from(this.nodesModifiedByMutation(mutation))) {
+        if (this.nodeIsSignificant(node)) return true;
+      }
+      return false;
+    }
+    nodeIsSignificant(node) {
+      return node !== this.element && !this.nodeIsMutable(node) && !nodeIsEmptyTextNode(node);
+    }
+    nodeIsMutable(node) {
+      return findClosestElementFromNode(node, {
+        matchingSelector: mutableSelector
+      });
+    }
+    nodesModifiedByMutation(mutation) {
+      const nodes = [];
+      switch (mutation.type) {
+        case "attributes":
+          if (mutation.attributeName !== mutableAttributeName) {
+            nodes.push(mutation.target);
+          }
+          break;
+        case "characterData":
+          // Changes to text nodes should consider the parent element
+          nodes.push(mutation.target.parentNode);
+          nodes.push(mutation.target);
+          break;
+        case "childList":
+          // Consider each added or removed node
+          nodes.push(...Array.from(mutation.addedNodes || []));
+          nodes.push(...Array.from(mutation.removedNodes || []));
+          break;
+      }
+      return nodes;
+    }
+    getMutationSummary() {
+      return this.getTextMutationSummary();
+    }
+    getTextMutationSummary() {
+      const {
+        additions,
+        deletions
+      } = this.getTextChangesFromCharacterData();
+      const textChanges = this.getTextChangesFromChildList();
+      Array.from(textChanges.additions).forEach(addition => {
+        if (!Array.from(additions).includes(addition)) {
+          additions.push(addition);
+        }
+      });
+      deletions.push(...Array.from(textChanges.deletions || []));
+      const summary = {};
+      const added = additions.join("");
+      if (added) {
+        summary.textAdded = added;
+      }
+      const deleted = deletions.join("");
+      if (deleted) {
+        summary.textDeleted = deleted;
+      }
+      return summary;
+    }
+    getMutationsByType(type) {
+      return Array.from(this.mutations).filter(mutation => mutation.type === type);
+    }
+    getTextChangesFromChildList() {
+      let textAdded, textRemoved;
+      const addedNodes = [];
+      const removedNodes = [];
+      Array.from(this.getMutationsByType("childList")).forEach(mutation => {
+        addedNodes.push(...Array.from(mutation.addedNodes || []));
+        removedNodes.push(...Array.from(mutation.removedNodes || []));
+      });
+      const singleBlockCommentRemoved = addedNodes.length === 0 && removedNodes.length === 1 && nodeIsBlockStartComment(removedNodes[0]);
+      if (singleBlockCommentRemoved) {
+        textAdded = [];
+        textRemoved = ["\n"];
+      } else {
+        textAdded = getTextForNodes(addedNodes);
+        textRemoved = getTextForNodes(removedNodes);
+      }
+      const additions = textAdded.filter((text, index) => text !== textRemoved[index]).map(normalizeSpaces);
+      const deletions = textRemoved.filter((text, index) => text !== textAdded[index]).map(normalizeSpaces);
+      return {
+        additions,
+        deletions
+      };
+    }
+    getTextChangesFromCharacterData() {
+      let added, removed;
+      const characterMutations = this.getMutationsByType("characterData");
+      if (characterMutations.length) {
+        const startMutation = characterMutations[0],
+          endMutation = characterMutations[characterMutations.length - 1];
+        const oldString = normalizeSpaces(startMutation.oldValue);
+        const newString = normalizeSpaces(endMutation.target.data);
+        const summarized = summarizeStringChange(oldString, newString);
+        added = summarized.added;
+        removed = summarized.removed;
+      }
+      return {
+        additions: added ? [added] : [],
+        deletions: removed ? [removed] : []
+      };
+    }
+  }
+  const getTextForNodes = function () {
+    let nodes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+    const text = [];
+    for (const node of Array.from(nodes)) {
+      switch (node.nodeType) {
+        case Node.TEXT_NODE:
+          text.push(node.data);
+          break;
+        case Node.ELEMENT_NODE:
+          if (tagName(node) === "br") {
+            text.push("\n");
+          } else {
+            text.push(...Array.from(getTextForNodes(node.childNodes) || []));
+          }
+          break;
+      }
+    }
+    return text;
+  };
+
+  /* eslint-disable
+      no-empty,
+  */
+  class FileVerificationOperation extends Operation {
+    constructor(file) {
+      super(...arguments);
+      this.file = file;
+    }
+    perform(callback) {
+      const reader = new FileReader();
+      reader.onerror = () => callback(false);
+      reader.onload = () => {
+        reader.onerror = null;
+        try {
+          reader.abort();
+        } catch (error) {}
+        return callback(true, this.file);
+      };
+      return reader.readAsArrayBuffer(this.file);
+    }
+  }
+
+  // Each software keyboard on Android emits its own set of events and some of them can be buggy.
+  // This class detects when some buggy events are being emitted and lets know the input controller
+  // that they should be ignored.
+  class FlakyAndroidKeyboardDetector {
+    constructor(element) {
+      this.element = element;
+    }
+    shouldIgnore(event) {
+      if (!browser$1.samsungAndroid) return false;
+      this.previousEvent = this.event;
+      this.event = event;
+      this.checkSamsungKeyboardBuggyModeStart();
+      this.checkSamsungKeyboardBuggyModeEnd();
+      return this.buggyMode;
+    }
+
+    // private
+
+    // The Samsung keyboard on Android can enter a buggy state in which it emits a flurry of confused events that,
+    // if processed, corrupts the editor. The buggy mode always starts with an insertText event, right after a
+    // keydown event with for an "Unidentified" key, with the same text as the editor element, except for a few
+    // extra whitespace, or exotic utf8, characters.
+    checkSamsungKeyboardBuggyModeStart() {
+      if (this.insertingLongTextAfterUnidentifiedChar() && differsInWhitespace(this.element.innerText, this.event.data)) {
+        this.buggyMode = true;
+        this.event.preventDefault();
+      }
+    }
+
+    // The flurry of buggy events are always insertText. If we see any other type, it means it's over.
+    checkSamsungKeyboardBuggyModeEnd() {
+      if (this.buggyMode && this.event.inputType !== "insertText") {
+        this.buggyMode = false;
+      }
+    }
+    insertingLongTextAfterUnidentifiedChar() {
+      var _this$event$data;
+      return this.isBeforeInputInsertText() && this.previousEventWasUnidentifiedKeydown() && ((_this$event$data = this.event.data) === null || _this$event$data === void 0 ? void 0 : _this$event$data.length) > 50;
+    }
+    isBeforeInputInsertText() {
+      return this.event.type === "beforeinput" && this.event.inputType === "insertText";
+    }
+    previousEventWasUnidentifiedKeydown() {
+      var _this$previousEvent, _this$previousEvent2;
+      return ((_this$previousEvent = this.previousEvent) === null || _this$previousEvent === void 0 ? void 0 : _this$previousEvent.type) === "keydown" && ((_this$previousEvent2 = this.previousEvent) === null || _this$previousEvent2 === void 0 ? void 0 : _this$previousEvent2.key) === "Unidentified";
+    }
+  }
+  const differsInWhitespace = (text1, text2) => {
+    return normalize(text1) === normalize(text2);
+  };
+  const whiteSpaceNormalizerRegexp = new RegExp("(".concat(OBJECT_REPLACEMENT_CHARACTER, "|").concat(ZERO_WIDTH_SPACE, "|").concat(NON_BREAKING_SPACE, "|\\s)+"), "g");
+  const normalize = text => text.replace(whiteSpaceNormalizerRegexp, " ").trim();
+
+  class InputController extends BasicObject {
+    constructor(element) {
+      super(...arguments);
+      this.element = element;
+      this.mutationObserver = new MutationObserver(this.element);
+      this.mutationObserver.delegate = this;
+      this.flakyKeyboardDetector = new FlakyAndroidKeyboardDetector(this.element);
+      for (const eventName in this.constructor.events) {
+        handleEvent(eventName, {
+          onElement: this.element,
+          withCallback: this.handlerFor(eventName)
+        });
+      }
+    }
+    elementDidMutate(mutationSummary) {}
+    editorWillSyncDocumentView() {
+      return this.mutationObserver.stop();
+    }
+    editorDidSyncDocumentView() {
+      return this.mutationObserver.start();
+    }
+    requestRender() {
+      var _this$delegate, _this$delegate$inputC;
+      return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$inputC = _this$delegate.inputControllerDidRequestRender) === null || _this$delegate$inputC === void 0 ? void 0 : _this$delegate$inputC.call(_this$delegate);
+    }
+    requestReparse() {
+      var _this$delegate2, _this$delegate2$input;
+      (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || (_this$delegate2$input = _this$delegate2.inputControllerDidRequestReparse) === null || _this$delegate2$input === void 0 || _this$delegate2$input.call(_this$delegate2);
+      return this.requestRender();
+    }
+    attachFiles(files) {
+      const operations = Array.from(files).map(file => new FileVerificationOperation(file));
+      return Promise.all(operations).then(files => {
+        this.handleInput(function () {
+          var _this$delegate3, _this$responder;
+          (_this$delegate3 = this.delegate) === null || _this$delegate3 === void 0 || _this$delegate3.inputControllerWillAttachFiles();
+          (_this$responder = this.responder) === null || _this$responder === void 0 || _this$responder.insertFiles(files);
+          return this.requestRender();
+        });
+      });
+    }
+
+    // Private
+
+    handlerFor(eventName) {
+      return event => {
+        if (!event.defaultPrevented) {
+          this.handleInput(() => {
+            if (!innerElementIsActive(this.element)) {
+              if (this.flakyKeyboardDetector.shouldIgnore(event)) return;
+              this.eventName = eventName;
+              this.constructor.events[eventName].call(this, event);
+            }
+          });
+        }
+      };
+    }
+    handleInput(callback) {
+      try {
+        var _this$delegate4;
+        (_this$delegate4 = this.delegate) === null || _this$delegate4 === void 0 || _this$delegate4.inputControllerWillHandleInput();
+        callback.call(this);
+      } finally {
+        var _this$delegate5;
+        (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 || _this$delegate5.inputControllerDidHandleInput();
+      }
+    }
+    createLinkHTML(href, text) {
+      const link = document.createElement("a");
+      link.href = href;
+      link.textContent = text ? text : href;
+      return link.outerHTML;
+    }
+  }
+  _defineProperty(InputController, "events", {});
+
+  var _$codePointAt, _;
+  const {
+    browser,
+    keyNames
+  } = config;
+  let pastedFileCount = 0;
+  class Level0InputController extends InputController {
+    constructor() {
+      super(...arguments);
+      this.resetInputSummary();
+    }
+    setInputSummary() {
+      let summary = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      this.inputSummary.eventName = this.eventName;
+      for (const key in summary) {
+        const value = summary[key];
+        this.inputSummary[key] = value;
+      }
+      return this.inputSummary;
+    }
+    resetInputSummary() {
+      this.inputSummary = {};
+    }
+    reset() {
+      this.resetInputSummary();
+      return selectionChangeObserver.reset();
+    }
+
+    // Mutation observer delegate
+
+    elementDidMutate(mutationSummary) {
+      if (this.isComposing()) {
+        var _this$delegate, _this$delegate$inputC;
+        return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$inputC = _this$delegate.inputControllerDidAllowUnhandledInput) === null || _this$delegate$inputC === void 0 ? void 0 : _this$delegate$inputC.call(_this$delegate);
+      } else {
+        return this.handleInput(function () {
+          if (this.mutationIsSignificant(mutationSummary)) {
+            if (this.mutationIsExpected(mutationSummary)) {
+              this.requestRender();
+            } else {
+              this.requestReparse();
+            }
+          }
+          return this.reset();
+        });
+      }
+    }
+    mutationIsExpected(_ref) {
+      let {
+        textAdded,
+        textDeleted
+      } = _ref;
+      if (this.inputSummary.preferDocument) {
+        return true;
+      }
+      const mutationAdditionMatchesSummary = textAdded != null ? textAdded === this.inputSummary.textAdded : !this.inputSummary.textAdded;
+      const mutationDeletionMatchesSummary = textDeleted != null ? this.inputSummary.didDelete : !this.inputSummary.didDelete;
+      const unexpectedNewlineAddition = ["\n", " \n"].includes(textAdded) && !mutationAdditionMatchesSummary;
+      const unexpectedNewlineDeletion = textDeleted === "\n" && !mutationDeletionMatchesSummary;
+      const singleUnexpectedNewline = unexpectedNewlineAddition && !unexpectedNewlineDeletion || unexpectedNewlineDeletion && !unexpectedNewlineAddition;
+      if (singleUnexpectedNewline) {
+        const range = this.getSelectedRange();
+        if (range) {
+          var _this$responder;
+          const offset = unexpectedNewlineAddition ? textAdded.replace(/\n$/, "").length || -1 : (textAdded === null || textAdded === void 0 ? void 0 : textAdded.length) || 1;
+          if ((_this$responder = this.responder) !== null && _this$responder !== void 0 && _this$responder.positionIsBlockBreak(range[1] + offset)) {
+            return true;
+          }
+        }
+      }
+      return mutationAdditionMatchesSummary && mutationDeletionMatchesSummary;
+    }
+    mutationIsSignificant(mutationSummary) {
+      var _this$compositionInpu;
+      const textChanged = Object.keys(mutationSummary).length > 0;
+      const composedEmptyString = ((_this$compositionInpu = this.compositionInput) === null || _this$compositionInpu === void 0 ? void 0 : _this$compositionInpu.getEndData()) === "";
+      return textChanged || !composedEmptyString;
+    }
+
+    // Private
+
+    getCompositionInput() {
+      if (this.isComposing()) {
+        return this.compositionInput;
+      } else {
+        this.compositionInput = new CompositionInput(this);
+      }
+    }
+    isComposing() {
+      return this.compositionInput && !this.compositionInput.isEnded();
+    }
+    deleteInDirection(direction, event) {
+      var _this$responder2;
+      if (((_this$responder2 = this.responder) === null || _this$responder2 === void 0 ? void 0 : _this$responder2.deleteInDirection(direction)) === false) {
+        if (event) {
+          event.preventDefault();
+          return this.requestRender();
+        }
+      } else {
+        return this.setInputSummary({
+          didDelete: true
+        });
+      }
+    }
+    serializeSelectionToDataTransfer(dataTransfer) {
+      var _this$responder3;
+      if (!dataTransferIsWritable(dataTransfer)) return;
+      const document = (_this$responder3 = this.responder) === null || _this$responder3 === void 0 ? void 0 : _this$responder3.getSelectedDocument().toSerializableDocument();
+      dataTransfer.setData("application/x-trix-document", JSON.stringify(document));
+      dataTransfer.setData("text/html", DocumentView.render(document).innerHTML);
+      dataTransfer.setData("text/plain", document.toString().replace(/\n$/, ""));
+      return true;
+    }
+    canAcceptDataTransfer(dataTransfer) {
+      const types = {};
+      Array.from((dataTransfer === null || dataTransfer === void 0 ? void 0 : dataTransfer.types) || []).forEach(type => {
+        types[type] = true;
+      });
+      return types.Files || types["application/x-trix-document"] || types["text/html"] || types["text/plain"];
+    }
+    getPastedHTMLUsingHiddenElement(callback) {
+      const selectedRange = this.getSelectedRange();
+      const style = {
+        position: "absolute",
+        left: "".concat(window.pageXOffset, "px"),
+        top: "".concat(window.pageYOffset, "px"),
+        opacity: 0
+      };
+      const element = makeElement({
+        style,
+        tagName: "div",
+        editable: true
+      });
+      document.body.appendChild(element);
+      element.focus();
+      return requestAnimationFrame(() => {
+        const html = element.innerHTML;
+        removeNode(element);
+        this.setSelectedRange(selectedRange);
+        return callback(html);
+      });
+    }
+  }
+  _defineProperty(Level0InputController, "events", {
+    keydown(event) {
+      if (!this.isComposing()) {
+        this.resetInputSummary();
+      }
+      this.inputSummary.didInput = true;
+      const keyName = keyNames[event.keyCode];
+      if (keyName) {
+        var _context2;
+        let context = this.keys;
+        ["ctrl", "alt", "shift", "meta"].forEach(modifier => {
+          if (event["".concat(modifier, "Key")]) {
+            var _context;
+            if (modifier === "ctrl") {
+              modifier = "control";
+            }
+            context = (_context = context) === null || _context === void 0 ? void 0 : _context[modifier];
+          }
+        });
+        if (((_context2 = context) === null || _context2 === void 0 ? void 0 : _context2[keyName]) != null) {
+          this.setInputSummary({
+            keyName
+          });
+          selectionChangeObserver.reset();
+          context[keyName].call(this, event);
+        }
+      }
+      if (keyEventIsKeyboardCommand(event)) {
+        const character = String.fromCharCode(event.keyCode).toLowerCase();
+        if (character) {
+          var _this$delegate3;
+          const keys = ["alt", "shift"].map(modifier => {
+            if (event["".concat(modifier, "Key")]) {
+              return modifier;
+            }
+          }).filter(key => key);
+          keys.push(character);
+          if ((_this$delegate3 = this.delegate) !== null && _this$delegate3 !== void 0 && _this$delegate3.inputControllerDidReceiveKeyboardCommand(keys)) {
+            event.preventDefault();
+          }
+        }
+      }
+    },
+    keypress(event) {
+      if (this.inputSummary.eventName != null) return;
+      if (event.metaKey) return;
+      if (event.ctrlKey && !event.altKey) return;
+      const string = stringFromKeyEvent(event);
+      if (string) {
+        var _this$delegate4, _this$responder9;
+        (_this$delegate4 = this.delegate) === null || _this$delegate4 === void 0 || _this$delegate4.inputControllerWillPerformTyping();
+        (_this$responder9 = this.responder) === null || _this$responder9 === void 0 || _this$responder9.insertString(string);
+        return this.setInputSummary({
+          textAdded: string,
+          didDelete: this.selectionIsExpanded()
+        });
+      }
+    },
+    textInput(event) {
+      // Handle autocapitalization
+      const {
+        data
+      } = event;
+      const {
+        textAdded
+      } = this.inputSummary;
+      if (textAdded && textAdded !== data && textAdded.toUpperCase() === data) {
+        var _this$responder10;
+        const range = this.getSelectedRange();
+        this.setSelectedRange([range[0], range[1] + textAdded.length]);
+        (_this$responder10 = this.responder) === null || _this$responder10 === void 0 || _this$responder10.insertString(data);
+        this.setInputSummary({
+          textAdded: data
+        });
+        return this.setSelectedRange(range);
+      }
+    },
+    dragenter(event) {
+      event.preventDefault();
+    },
+    dragstart(event) {
+      var _this$delegate5, _this$delegate5$input;
+      this.serializeSelectionToDataTransfer(event.dataTransfer);
+      this.draggedRange = this.getSelectedRange();
+      return (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 || (_this$delegate5$input = _this$delegate5.inputControllerDidStartDrag) === null || _this$delegate5$input === void 0 ? void 0 : _this$delegate5$input.call(_this$delegate5);
+    },
+    dragover(event) {
+      if (this.draggedRange || this.canAcceptDataTransfer(event.dataTransfer)) {
+        event.preventDefault();
+        const draggingPoint = {
+          x: event.clientX,
+          y: event.clientY
+        };
+        if (!objectsAreEqual(draggingPoint, this.draggingPoint)) {
+          var _this$delegate6, _this$delegate6$input;
+          this.draggingPoint = draggingPoint;
+          return (_this$delegate6 = this.delegate) === null || _this$delegate6 === void 0 || (_this$delegate6$input = _this$delegate6.inputControllerDidReceiveDragOverPoint) === null || _this$delegate6$input === void 0 ? void 0 : _this$delegate6$input.call(_this$delegate6, this.draggingPoint);
+        }
+      }
+    },
+    dragend(event) {
+      var _this$delegate7, _this$delegate7$input;
+      (_this$delegate7 = this.delegate) === null || _this$delegate7 === void 0 || (_this$delegate7$input = _this$delegate7.inputControllerDidCancelDrag) === null || _this$delegate7$input === void 0 || _this$delegate7$input.call(_this$delegate7);
+      this.draggedRange = null;
+      this.draggingPoint = null;
+    },
+    drop(event) {
+      var _event$dataTransfer, _this$responder11;
+      event.preventDefault();
+      const files = (_event$dataTransfer = event.dataTransfer) === null || _event$dataTransfer === void 0 ? void 0 : _event$dataTransfer.files;
+      const documentJSON = event.dataTransfer.getData("application/x-trix-document");
+      const point = {
+        x: event.clientX,
+        y: event.clientY
+      };
+      (_this$responder11 = this.responder) === null || _this$responder11 === void 0 || _this$responder11.setLocationRangeFromPointRange(point);
+      if (files !== null && files !== void 0 && files.length) {
+        this.attachFiles(files);
+      } else if (this.draggedRange) {
+        var _this$delegate8, _this$responder12;
+        (_this$delegate8 = this.delegate) === null || _this$delegate8 === void 0 || _this$delegate8.inputControllerWillMoveText();
+        (_this$responder12 = this.responder) === null || _this$responder12 === void 0 || _this$responder12.moveTextFromRange(this.draggedRange);
+        this.draggedRange = null;
+        this.requestRender();
+      } else if (documentJSON) {
+        var _this$responder13;
+        const document = Document.fromJSONString(documentJSON);
+        (_this$responder13 = this.responder) === null || _this$responder13 === void 0 || _this$responder13.insertDocument(document);
+        this.requestRender();
+      }
+      this.draggedRange = null;
+      this.draggingPoint = null;
+    },
+    cut(event) {
+      var _this$responder14;
+      if ((_this$responder14 = this.responder) !== null && _this$responder14 !== void 0 && _this$responder14.selectionIsExpanded()) {
+        var _this$delegate9;
+        if (this.serializeSelectionToDataTransfer(event.clipboardData)) {
+          event.preventDefault();
+        }
+        (_this$delegate9 = this.delegate) === null || _this$delegate9 === void 0 || _this$delegate9.inputControllerWillCutText();
+        this.deleteInDirection("backward");
+        if (event.defaultPrevented) {
+          return this.requestRender();
+        }
+      }
+    },
+    copy(event) {
+      var _this$responder15;
+      if ((_this$responder15 = this.responder) !== null && _this$responder15 !== void 0 && _this$responder15.selectionIsExpanded()) {
+        if (this.serializeSelectionToDataTransfer(event.clipboardData)) {
+          event.preventDefault();
+        }
+      }
+    },
+    paste(event) {
+      const clipboard = event.clipboardData || event.testClipboardData;
+      const paste = {
+        clipboard
+      };
+      if (!clipboard || pasteEventIsCrippledSafariHTMLPaste(event)) {
+        this.getPastedHTMLUsingHiddenElement(html => {
+          var _this$delegate10, _this$responder16, _this$delegate11;
+          paste.type = "text/html";
+          paste.html = html;
+          (_this$delegate10 = this.delegate) === null || _this$delegate10 === void 0 || _this$delegate10.inputControllerWillPaste(paste);
+          (_this$responder16 = this.responder) === null || _this$responder16 === void 0 || _this$responder16.insertHTML(paste.html);
+          this.requestRender();
+          return (_this$delegate11 = this.delegate) === null || _this$delegate11 === void 0 ? void 0 : _this$delegate11.inputControllerDidPaste(paste);
+        });
+        return;
+      }
+      const href = clipboard.getData("URL");
+      const html = clipboard.getData("text/html");
+      const name = clipboard.getData("public.url-name");
+      if (href) {
+        var _this$delegate12, _this$responder17, _this$delegate13;
+        let string;
+        paste.type = "text/html";
+        if (name) {
+          string = squishBreakableWhitespace(name).trim();
+        } else {
+          string = href;
+        }
+        paste.html = this.createLinkHTML(href, string);
+        (_this$delegate12 = this.delegate) === null || _this$delegate12 === void 0 || _this$delegate12.inputControllerWillPaste(paste);
+        this.setInputSummary({
+          textAdded: string,
+          didDelete: this.selectionIsExpanded()
+        });
+        (_this$responder17 = this.responder) === null || _this$responder17 === void 0 || _this$responder17.insertHTML(paste.html);
+        this.requestRender();
+        (_this$delegate13 = this.delegate) === null || _this$delegate13 === void 0 || _this$delegate13.inputControllerDidPaste(paste);
+      } else if (dataTransferIsPlainText(clipboard)) {
+        var _this$delegate14, _this$responder18, _this$delegate15;
+        paste.type = "text/plain";
+        paste.string = clipboard.getData("text/plain");
+        (_this$delegate14 = this.delegate) === null || _this$delegate14 === void 0 || _this$delegate14.inputControllerWillPaste(paste);
+        this.setInputSummary({
+          textAdded: paste.string,
+          didDelete: this.selectionIsExpanded()
+        });
+        (_this$responder18 = this.responder) === null || _this$responder18 === void 0 || _this$responder18.insertString(paste.string);
+        this.requestRender();
+        (_this$delegate15 = this.delegate) === null || _this$delegate15 === void 0 || _this$delegate15.inputControllerDidPaste(paste);
+      } else if (html) {
+        var _this$delegate16, _this$responder19, _this$delegate17;
+        paste.type = "text/html";
+        paste.html = html;
+        (_this$delegate16 = this.delegate) === null || _this$delegate16 === void 0 || _this$delegate16.inputControllerWillPaste(paste);
+        (_this$responder19 = this.responder) === null || _this$responder19 === void 0 || _this$responder19.insertHTML(paste.html);
+        this.requestRender();
+        (_this$delegate17 = this.delegate) === null || _this$delegate17 === void 0 || _this$delegate17.inputControllerDidPaste(paste);
+      } else if (Array.from(clipboard.types).includes("Files")) {
+        var _clipboard$items, _clipboard$items$getA;
+        const file = (_clipboard$items = clipboard.items) === null || _clipboard$items === void 0 || (_clipboard$items = _clipboard$items[0]) === null || _clipboard$items === void 0 || (_clipboard$items$getA = _clipboard$items.getAsFile) === null || _clipboard$items$getA === void 0 ? void 0 : _clipboard$items$getA.call(_clipboard$items);
+        if (file) {
+          var _this$delegate18, _this$responder20, _this$delegate19;
+          const extension = extensionForFile(file);
+          if (!file.name && extension) {
+            file.name = "pasted-file-".concat(++pastedFileCount, ".").concat(extension);
+          }
+          paste.type = "File";
+          paste.file = file;
+          (_this$delegate18 = this.delegate) === null || _this$delegate18 === void 0 || _this$delegate18.inputControllerWillAttachFiles();
+          (_this$responder20 = this.responder) === null || _this$responder20 === void 0 || _this$responder20.insertFile(paste.file);
+          this.requestRender();
+          (_this$delegate19 = this.delegate) === null || _this$delegate19 === void 0 || _this$delegate19.inputControllerDidPaste(paste);
+        }
+      }
+      event.preventDefault();
+    },
+    compositionstart(event) {
+      return this.getCompositionInput().start(event.data);
+    },
+    compositionupdate(event) {
+      return this.getCompositionInput().update(event.data);
+    },
+    compositionend(event) {
+      return this.getCompositionInput().end(event.data);
+    },
+    beforeinput(event) {
+      this.inputSummary.didInput = true;
+    },
+    input(event) {
+      this.inputSummary.didInput = true;
+      return event.stopPropagation();
+    }
+  });
+  _defineProperty(Level0InputController, "keys", {
+    backspace(event) {
+      var _this$delegate20;
+      (_this$delegate20 = this.delegate) === null || _this$delegate20 === void 0 || _this$delegate20.inputControllerWillPerformTyping();
+      return this.deleteInDirection("backward", event);
+    },
+    delete(event) {
+      var _this$delegate21;
+      (_this$delegate21 = this.delegate) === null || _this$delegate21 === void 0 || _this$delegate21.inputControllerWillPerformTyping();
+      return this.deleteInDirection("forward", event);
+    },
+    return(event) {
+      var _this$delegate22, _this$responder21;
+      this.setInputSummary({
+        preferDocument: true
+      });
+      (_this$delegate22 = this.delegate) === null || _this$delegate22 === void 0 || _this$delegate22.inputControllerWillPerformTyping();
+      return (_this$responder21 = this.responder) === null || _this$responder21 === void 0 ? void 0 : _this$responder21.insertLineBreak();
+    },
+    tab(event) {
+      var _this$responder22;
+      if ((_this$responder22 = this.responder) !== null && _this$responder22 !== void 0 && _this$responder22.canIncreaseNestingLevel()) {
+        var _this$responder23;
+        (_this$responder23 = this.responder) === null || _this$responder23 === void 0 || _this$responder23.increaseNestingLevel();
+        this.requestRender();
+        event.preventDefault();
+      }
+    },
+    left(event) {
+      if (this.selectionIsInCursorTarget()) {
+        var _this$responder24;
+        event.preventDefault();
+        return (_this$responder24 = this.responder) === null || _this$responder24 === void 0 ? void 0 : _this$responder24.moveCursorInDirection("backward");
+      }
+    },
+    right(event) {
+      if (this.selectionIsInCursorTarget()) {
+        var _this$responder25;
+        event.preventDefault();
+        return (_this$responder25 = this.responder) === null || _this$responder25 === void 0 ? void 0 : _this$responder25.moveCursorInDirection("forward");
+      }
+    },
+    control: {
+      d(event) {
+        var _this$delegate23;
+        (_this$delegate23 = this.delegate) === null || _this$delegate23 === void 0 || _this$delegate23.inputControllerWillPerformTyping();
+        return this.deleteInDirection("forward", event);
+      },
+      h(event) {
+        var _this$delegate24;
+        (_this$delegate24 = this.delegate) === null || _this$delegate24 === void 0 || _this$delegate24.inputControllerWillPerformTyping();
+        return this.deleteInDirection("backward", event);
+      },
+      o(event) {
+        var _this$delegate25, _this$responder26;
+        event.preventDefault();
+        (_this$delegate25 = this.delegate) === null || _this$delegate25 === void 0 || _this$delegate25.inputControllerWillPerformTyping();
+        (_this$responder26 = this.responder) === null || _this$responder26 === void 0 || _this$responder26.insertString("\n", {
+          updatePosition: false
+        });
+        return this.requestRender();
+      }
+    },
+    shift: {
+      return(event) {
+        var _this$delegate26, _this$responder27;
+        (_this$delegate26 = this.delegate) === null || _this$delegate26 === void 0 || _this$delegate26.inputControllerWillPerformTyping();
+        (_this$responder27 = this.responder) === null || _this$responder27 === void 0 || _this$responder27.insertString("\n");
+        this.requestRender();
+        event.preventDefault();
+      },
+      tab(event) {
+        var _this$responder28;
+        if ((_this$responder28 = this.responder) !== null && _this$responder28 !== void 0 && _this$responder28.canDecreaseNestingLevel()) {
+          var _this$responder29;
+          (_this$responder29 = this.responder) === null || _this$responder29 === void 0 || _this$responder29.decreaseNestingLevel();
+          this.requestRender();
+          event.preventDefault();
+        }
+      },
+      left(event) {
+        if (this.selectionIsInCursorTarget()) {
+          event.preventDefault();
+          return this.expandSelectionInDirection("backward");
+        }
+      },
+      right(event) {
+        if (this.selectionIsInCursorTarget()) {
+          event.preventDefault();
+          return this.expandSelectionInDirection("forward");
+        }
+      }
+    },
+    alt: {
+      backspace(event) {
+        var _this$delegate27;
+        this.setInputSummary({
+          preferDocument: false
+        });
+        return (_this$delegate27 = this.delegate) === null || _this$delegate27 === void 0 ? void 0 : _this$delegate27.inputControllerWillPerformTyping();
+      }
+    },
+    meta: {
+      backspace(event) {
+        var _this$delegate28;
+        this.setInputSummary({
+          preferDocument: false
+        });
+        return (_this$delegate28 = this.delegate) === null || _this$delegate28 === void 0 ? void 0 : _this$delegate28.inputControllerWillPerformTyping();
+      }
+    }
+  });
+  Level0InputController.proxyMethod("responder?.getSelectedRange");
+  Level0InputController.proxyMethod("responder?.setSelectedRange");
+  Level0InputController.proxyMethod("responder?.expandSelectionInDirection");
+  Level0InputController.proxyMethod("responder?.selectionIsInCursorTarget");
+  Level0InputController.proxyMethod("responder?.selectionIsExpanded");
+  const extensionForFile = file => {
+    var _file$type;
+    return (_file$type = file.type) === null || _file$type === void 0 || (_file$type = _file$type.match(/\/(\w+)$/)) === null || _file$type === void 0 ? void 0 : _file$type[1];
+  };
+  const hasStringCodePointAt = !!((_$codePointAt = (_ = " ").codePointAt) !== null && _$codePointAt !== void 0 && _$codePointAt.call(_, 0));
+  const stringFromKeyEvent = function (event) {
+    if (event.key && hasStringCodePointAt && event.key.codePointAt(0) === event.keyCode) {
+      return event.key;
+    } else {
+      let code;
+      if (event.which === null) {
+        code = event.keyCode;
+      } else if (event.which !== 0 && event.charCode !== 0) {
+        code = event.charCode;
+      }
+      if (code != null && keyNames[code] !== "escape") {
+        return UTF16String.fromCodepoints([code]).toString();
+      }
+    }
+  };
+  const pasteEventIsCrippledSafariHTMLPaste = function (event) {
+    const paste = event.clipboardData;
+    if (paste) {
+      if (paste.types.includes("text/html")) {
+        // Answer is yes if there's any possibility of Paste and Match Style in Safari,
+        // which is nearly impossible to detect confidently: https://bugs.webkit.org/show_bug.cgi?id=174165
+        for (const type of paste.types) {
+          const hasPasteboardFlavor = /^CorePasteboardFlavorType/.test(type);
+          const hasReadableDynamicData = /^dyn\./.test(type) && paste.getData(type);
+          const mightBePasteAndMatchStyle = hasPasteboardFlavor || hasReadableDynamicData;
+          if (mightBePasteAndMatchStyle) {
+            return true;
+          }
+        }
+        return false;
+      } else {
+        const isExternalHTMLPaste = paste.types.includes("com.apple.webarchive");
+        const isExternalRichTextPaste = paste.types.includes("com.apple.flat-rtfd");
+        return isExternalHTMLPaste || isExternalRichTextPaste;
+      }
+    }
+  };
+  class CompositionInput extends BasicObject {
+    constructor(inputController) {
+      super(...arguments);
+      this.inputController = inputController;
+      this.responder = this.inputController.responder;
+      this.delegate = this.inputController.delegate;
+      this.inputSummary = this.inputController.inputSummary;
+      this.data = {};
+    }
+    start(data) {
+      this.data.start = data;
+      if (this.isSignificant()) {
+        var _this$responder5;
+        if (this.inputSummary.eventName === "keypress" && this.inputSummary.textAdded) {
+          var _this$responder4;
+          (_this$responder4 = this.responder) === null || _this$responder4 === void 0 || _this$responder4.deleteInDirection("left");
+        }
+        if (!this.selectionIsExpanded()) {
+          this.insertPlaceholder();
+          this.requestRender();
+        }
+        this.range = (_this$responder5 = this.responder) === null || _this$responder5 === void 0 ? void 0 : _this$responder5.getSelectedRange();
+      }
+    }
+    update(data) {
+      this.data.update = data;
+      if (this.isSignificant()) {
+        const range = this.selectPlaceholder();
+        if (range) {
+          this.forgetPlaceholder();
+          this.range = range;
+        }
+      }
+    }
+    end(data) {
+      this.data.end = data;
+      if (this.isSignificant()) {
+        this.forgetPlaceholder();
+        if (this.canApplyToDocument()) {
+          var _this$delegate2, _this$responder6, _this$responder7, _this$responder8;
+          this.setInputSummary({
+            preferDocument: true,
+            didInput: false
+          });
+          (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || _this$delegate2.inputControllerWillPerformTyping();
+          (_this$responder6 = this.responder) === null || _this$responder6 === void 0 || _this$responder6.setSelectedRange(this.range);
+          (_this$responder7 = this.responder) === null || _this$responder7 === void 0 || _this$responder7.insertString(this.data.end);
+          return (_this$responder8 = this.responder) === null || _this$responder8 === void 0 ? void 0 : _this$responder8.setSelectedRange(this.range[0] + this.data.end.length);
+        } else if (this.data.start != null || this.data.update != null) {
+          this.requestReparse();
+          return this.inputController.reset();
+        }
+      } else {
+        return this.inputController.reset();
+      }
+    }
+    getEndData() {
+      return this.data.end;
+    }
+    isEnded() {
+      return this.getEndData() != null;
+    }
+    isSignificant() {
+      if (browser.composesExistingText) {
+        return this.inputSummary.didInput;
+      } else {
+        return true;
+      }
+    }
+
+    // Private
+
+    canApplyToDocument() {
+      var _this$data$start, _this$data$end;
+      return ((_this$data$start = this.data.start) === null || _this$data$start === void 0 ? void 0 : _this$data$start.length) === 0 && ((_this$data$end = this.data.end) === null || _this$data$end === void 0 ? void 0 : _this$data$end.length) > 0 && this.range;
+    }
+  }
+  CompositionInput.proxyMethod("inputController.setInputSummary");
+  CompositionInput.proxyMethod("inputController.requestRender");
+  CompositionInput.proxyMethod("inputController.requestReparse");
+  CompositionInput.proxyMethod("responder?.selectionIsExpanded");
+  CompositionInput.proxyMethod("responder?.insertPlaceholder");
+  CompositionInput.proxyMethod("responder?.selectPlaceholder");
+  CompositionInput.proxyMethod("responder?.forgetPlaceholder");
+
+  class Level2InputController extends InputController {
+    constructor() {
+      super(...arguments);
+      this.render = this.render.bind(this);
+    }
+    elementDidMutate() {
+      if (this.scheduledRender) {
+        if (this.composing) {
+          var _this$delegate, _this$delegate$inputC;
+          return (_this$delegate = this.delegate) === null || _this$delegate === void 0 || (_this$delegate$inputC = _this$delegate.inputControllerDidAllowUnhandledInput) === null || _this$delegate$inputC === void 0 ? void 0 : _this$delegate$inputC.call(_this$delegate);
+        }
+      } else {
+        return this.reparse();
+      }
+    }
+    scheduleRender() {
+      return this.scheduledRender ? this.scheduledRender : this.scheduledRender = requestAnimationFrame(this.render);
+    }
+    render() {
+      var _this$afterRender;
+      cancelAnimationFrame(this.scheduledRender);
+      this.scheduledRender = null;
+      if (!this.composing) {
+        var _this$delegate2;
+        (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 || _this$delegate2.render();
+      }
+      (_this$afterRender = this.afterRender) === null || _this$afterRender === void 0 || _this$afterRender.call(this);
+      this.afterRender = null;
+    }
+    reparse() {
+      var _this$delegate3;
+      return (_this$delegate3 = this.delegate) === null || _this$delegate3 === void 0 ? void 0 : _this$delegate3.reparse();
+    }
+
+    // Responder helpers
+
+    insertString() {
+      var _this$delegate4;
+      let string = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "";
+      let options = arguments.length > 1 ? arguments[1] : undefined;
+      (_this$delegate4 = this.delegate) === null || _this$delegate4 === void 0 || _this$delegate4.inputControllerWillPerformTyping();
+      return this.withTargetDOMRange(function () {
+        var _this$responder;
+        return (_this$responder = this.responder) === null || _this$responder === void 0 ? void 0 : _this$responder.insertString(string, options);
+      });
+    }
+    toggleAttributeIfSupported(attributeName) {
+      if (getAllAttributeNames().includes(attributeName)) {
+        var _this$delegate5;
+        (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 || _this$delegate5.inputControllerWillPerformFormatting(attributeName);
+        return this.withTargetDOMRange(function () {
+          var _this$responder2;
+          return (_this$responder2 = this.responder) === null || _this$responder2 === void 0 ? void 0 : _this$responder2.toggleCurrentAttribute(attributeName);
+        });
+      }
+    }
+    activateAttributeIfSupported(attributeName, value) {
+      if (getAllAttributeNames().includes(attributeName)) {
+        var _this$delegate6;
+        (_this$delegate6 = this.delegate) === null || _this$delegate6 === void 0 || _this$delegate6.inputControllerWillPerformFormatting(attributeName);
+        return this.withTargetDOMRange(function () {
+          var _this$responder3;
+          return (_this$responder3 = this.responder) === null || _this$responder3 === void 0 ? void 0 : _this$responder3.setCurrentAttribute(attributeName, value);
+        });
+      }
+    }
+    deleteInDirection(direction) {
+      let {
+        recordUndoEntry
+      } = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
+        recordUndoEntry: true
+      };
+      if (recordUndoEntry) {
+        var _this$delegate7;
+        (_this$delegate7 = this.delegate) === null || _this$delegate7 === void 0 || _this$delegate7.inputControllerWillPerformTyping();
+      }
+      const perform = () => {
+        var _this$responder4;
+        return (_this$responder4 = this.responder) === null || _this$responder4 === void 0 ? void 0 : _this$responder4.deleteInDirection(direction);
+      };
+      const domRange = this.getTargetDOMRange({
+        minLength: this.composing ? 1 : 2
+      });
+      if (domRange) {
+        return this.withTargetDOMRange(domRange, perform);
+      } else {
+        return perform();
+      }
+    }
+
+    // Selection helpers
+
+    withTargetDOMRange(domRange, fn) {
+      if (typeof domRange === "function") {
+        fn = domRange;
+        domRange = this.getTargetDOMRange();
+      }
+      if (domRange) {
+        var _this$responder5;
+        return (_this$responder5 = this.responder) === null || _this$responder5 === void 0 ? void 0 : _this$responder5.withTargetDOMRange(domRange, fn.bind(this));
+      } else {
+        selectionChangeObserver.reset();
+        return fn.call(this);
+      }
+    }
+    getTargetDOMRange() {
+      var _this$event$getTarget, _this$event;
+      let {
+        minLength
+      } = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {
+        minLength: 0
+      };
+      const targetRanges = (_this$event$getTarget = (_this$event = this.event).getTargetRanges) === null || _this$event$getTarget === void 0 ? void 0 : _this$event$getTarget.call(_this$event);
+      if (targetRanges) {
+        if (targetRanges.length) {
+          const domRange = staticRangeToRange(targetRanges[0]);
+          if (minLength === 0 || domRange.toString().length >= minLength) {
+            return domRange;
+          }
+        }
+      }
+    }
+    withEvent(event, fn) {
+      let result;
+      this.event = event;
+      try {
+        result = fn.call(this);
+      } finally {
+        this.event = null;
+      }
+      return result;
+    }
+  }
+  _defineProperty(Level2InputController, "events", {
+    keydown(event) {
+      if (keyEventIsKeyboardCommand(event)) {
+        var _this$delegate8;
+        const command = keyboardCommandFromKeyEvent(event);
+        if ((_this$delegate8 = this.delegate) !== null && _this$delegate8 !== void 0 && _this$delegate8.inputControllerDidReceiveKeyboardCommand(command)) {
+          event.preventDefault();
+        }
+      } else {
+        let name = event.key;
+        if (event.altKey) {
+          name += "+Alt";
+        }
+        if (event.shiftKey) {
+          name += "+Shift";
+        }
+        const handler = this.constructor.keys[name];
+        if (handler) {
+          return this.withEvent(event, handler);
+        }
+      }
+    },
+    // Handle paste event to work around beforeinput.insertFromPaste browser bugs.
+    // Safe to remove each condition once fixed upstream.
+    paste(event) {
+      var _event$clipboardData;
+      // https://bugs.webkit.org/show_bug.cgi?id=194921
+      let paste;
+      const href = (_event$clipboardData = event.clipboardData) === null || _event$clipboardData === void 0 ? void 0 : _event$clipboardData.getData("URL");
+      if (pasteEventHasFilesOnly(event)) {
+        event.preventDefault();
+        return this.attachFiles(event.clipboardData.files);
+
+        // https://bugs.chromium.org/p/chromium/issues/detail?id=934448
+      } else if (pasteEventHasPlainTextOnly(event)) {
+        var _this$delegate9, _this$responder6, _this$delegate10;
+        event.preventDefault();
+        paste = {
+          type: "text/plain",
+          string: event.clipboardData.getData("text/plain")
+        };
+        (_this$delegate9 = this.delegate) === null || _this$delegate9 === void 0 || _this$delegate9.inputControllerWillPaste(paste);
+        (_this$responder6 = this.responder) === null || _this$responder6 === void 0 || _this$responder6.insertString(paste.string);
+        this.render();
+        return (_this$delegate10 = this.delegate) === null || _this$delegate10 === void 0 ? void 0 : _this$delegate10.inputControllerDidPaste(paste);
+
+        // https://bugs.webkit.org/show_bug.cgi?id=196702
+      } else if (href) {
+        var _this$delegate11, _this$responder7, _this$delegate12;
+        event.preventDefault();
+        paste = {
+          type: "text/html",
+          html: this.createLinkHTML(href)
+        };
+        (_this$delegate11 = this.delegate) === null || _this$delegate11 === void 0 || _this$delegate11.inputControllerWillPaste(paste);
+        (_this$responder7 = this.responder) === null || _this$responder7 === void 0 || _this$responder7.insertHTML(paste.html);
+        this.render();
+        return (_this$delegate12 = this.delegate) === null || _this$delegate12 === void 0 ? void 0 : _this$delegate12.inputControllerDidPaste(paste);
+      }
+    },
+    beforeinput(event) {
+      const handler = this.constructor.inputTypes[event.inputType];
+      const immmediateRender = shouldRenderInmmediatelyToDealWithIOSDictation(event);
+      if (handler) {
+        this.withEvent(event, handler);
+        if (!immmediateRender) {
+          this.scheduleRender();
+        }
+      }
+      if (immmediateRender) {
+        this.render();
+      }
+    },
+    input(event) {
+      selectionChangeObserver.reset();
+    },
+    dragstart(event) {
+      var _this$responder8;
+      if ((_this$responder8 = this.responder) !== null && _this$responder8 !== void 0 && _this$responder8.selectionContainsAttachments()) {
+        var _this$responder9;
+        event.dataTransfer.setData("application/x-trix-dragging", true);
+        this.dragging = {
+          range: (_this$responder9 = this.responder) === null || _this$responder9 === void 0 ? void 0 : _this$responder9.getSelectedRange(),
+          point: pointFromEvent(event)
+        };
+      }
+    },
+    dragenter(event) {
+      if (dragEventHasFiles(event)) {
+        event.preventDefault();
+      }
+    },
+    dragover(event) {
+      if (this.dragging) {
+        event.preventDefault();
+        const point = pointFromEvent(event);
+        if (!objectsAreEqual(point, this.dragging.point)) {
+          var _this$responder10;
+          this.dragging.point = point;
+          return (_this$responder10 = this.responder) === null || _this$responder10 === void 0 ? void 0 : _this$responder10.setLocationRangeFromPointRange(point);
+        }
+      } else if (dragEventHasFiles(event)) {
+        event.preventDefault();
+      }
+    },
+    drop(event) {
+      if (this.dragging) {
+        var _this$delegate13, _this$responder11;
+        event.preventDefault();
+        (_this$delegate13 = this.delegate) === null || _this$delegate13 === void 0 || _this$delegate13.inputControllerWillMoveText();
+        (_this$responder11 = this.responder) === null || _this$responder11 === void 0 || _this$responder11.moveTextFromRange(this.dragging.range);
+        this.dragging = null;
+        return this.scheduleRender();
+      } else if (dragEventHasFiles(event)) {
+        var _this$responder12;
+        event.preventDefault();
+        const point = pointFromEvent(event);
+        (_this$responder12 = this.responder) === null || _this$responder12 === void 0 || _this$responder12.setLocationRangeFromPointRange(point);
+        return this.attachFiles(event.dataTransfer.files);
+      }
+    },
+    dragend() {
+      if (this.dragging) {
+        var _this$responder13;
+        (_this$responder13 = this.responder) === null || _this$responder13 === void 0 || _this$responder13.setSelectedRange(this.dragging.range);
+        this.dragging = null;
+      }
+    },
+    compositionend(event) {
+      if (this.composing) {
+        this.composing = false;
+        if (!browser$1.recentAndroid) this.scheduleRender();
+      }
+    }
+  });
+  _defineProperty(Level2InputController, "keys", {
+    ArrowLeft() {
+      var _this$responder14;
+      if ((_this$responder14 = this.responder) !== null && _this$responder14 !== void 0 && _this$responder14.shouldManageMovingCursorInDirection("backward")) {
+        var _this$responder15;
+        this.event.preventDefault();
+        return (_this$responder15 = this.responder) === null || _this$responder15 === void 0 ? void 0 : _this$responder15.moveCursorInDirection("backward");
+      }
+    },
+    ArrowRight() {
+      var _this$responder16;
+      if ((_this$responder16 = this.responder) !== null && _this$responder16 !== void 0 && _this$responder16.shouldManageMovingCursorInDirection("forward")) {
+        var _this$responder17;
+        this.event.preventDefault();
+        return (_this$responder17 = this.responder) === null || _this$responder17 === void 0 ? void 0 : _this$responder17.moveCursorInDirection("forward");
+      }
+    },
+    Backspace() {
+      var _this$responder18;
+      if ((_this$responder18 = this.responder) !== null && _this$responder18 !== void 0 && _this$responder18.shouldManageDeletingInDirection("backward")) {
+        var _this$delegate14, _this$responder19;
+        this.event.preventDefault();
+        (_this$delegate14 = this.delegate) === null || _this$delegate14 === void 0 || _this$delegate14.inputControllerWillPerformTyping();
+        (_this$responder19 = this.responder) === null || _this$responder19 === void 0 || _this$responder19.deleteInDirection("backward");
+        return this.render();
+      }
+    },
+    Tab() {
+      var _this$responder20;
+      if ((_this$responder20 = this.responder) !== null && _this$responder20 !== void 0 && _this$responder20.canIncreaseNestingLevel()) {
+        var _this$responder21;
+        this.event.preventDefault();
+        (_this$responder21 = this.responder) === null || _this$responder21 === void 0 || _this$responder21.increaseNestingLevel();
+        return this.render();
+      }
+    },
+    "Tab+Shift"() {
+      var _this$responder22;
+      if ((_this$responder22 = this.responder) !== null && _this$responder22 !== void 0 && _this$responder22.canDecreaseNestingLevel()) {
+        var _this$responder23;
+        this.event.preventDefault();
+        (_this$responder23 = this.responder) === null || _this$responder23 === void 0 || _this$responder23.decreaseNestingLevel();
+        return this.render();
+      }
+    }
+  });
+  _defineProperty(Level2InputController, "inputTypes", {
+    deleteByComposition() {
+      return this.deleteInDirection("backward", {
+        recordUndoEntry: false
+      });
+    },
+    deleteByCut() {
+      return this.deleteInDirection("backward");
+    },
+    deleteByDrag() {
+      this.event.preventDefault();
+      return this.withTargetDOMRange(function () {
+        var _this$responder24;
+        this.deleteByDragRange = (_this$responder24 = this.responder) === null || _this$responder24 === void 0 ? void 0 : _this$responder24.getSelectedRange();
+      });
+    },
+    deleteCompositionText() {
+      return this.deleteInDirection("backward", {
+        recordUndoEntry: false
+      });
+    },
+    deleteContent() {
+      return this.deleteInDirection("backward");
+    },
+    deleteContentBackward() {
+      return this.deleteInDirection("backward");
+    },
+    deleteContentForward() {
+      return this.deleteInDirection("forward");
+    },
+    deleteEntireSoftLine() {
+      return this.deleteInDirection("forward");
+    },
+    deleteHardLineBackward() {
+      return this.deleteInDirection("backward");
+    },
+    deleteHardLineForward() {
+      return this.deleteInDirection("forward");
+    },
+    deleteSoftLineBackward() {
+      return this.deleteInDirection("backward");
+    },
+    deleteSoftLineForward() {
+      return this.deleteInDirection("forward");
+    },
+    deleteWordBackward() {
+      return this.deleteInDirection("backward");
+    },
+    deleteWordForward() {
+      return this.deleteInDirection("forward");
+    },
+    formatBackColor() {
+      return this.activateAttributeIfSupported("backgroundColor", this.event.data);
+    },
+    formatBold() {
+      return this.toggleAttributeIfSupported("bold");
+    },
+    formatFontColor() {
+      return this.activateAttributeIfSupported("color", this.event.data);
+    },
+    formatFontName() {
+      return this.activateAttributeIfSupported("font", this.event.data);
+    },
+    formatIndent() {
+      var _this$responder25;
+      if ((_this$responder25 = this.responder) !== null && _this$responder25 !== void 0 && _this$responder25.canIncreaseNestingLevel()) {
+        return this.withTargetDOMRange(function () {
+          var _this$responder26;
+          return (_this$responder26 = this.responder) === null || _this$responder26 === void 0 ? void 0 : _this$responder26.increaseNestingLevel();
+        });
+      }
+    },
+    formatItalic() {
+      return this.toggleAttributeIfSupported("italic");
+    },
+    formatJustifyCenter() {
+      return this.toggleAttributeIfSupported("justifyCenter");
+    },
+    formatJustifyFull() {
+      return this.toggleAttributeIfSupported("justifyFull");
+    },
+    formatJustifyLeft() {
+      return this.toggleAttributeIfSupported("justifyLeft");
+    },
+    formatJustifyRight() {
+      return this.toggleAttributeIfSupported("justifyRight");
+    },
+    formatOutdent() {
+      var _this$responder27;
+      if ((_this$responder27 = this.responder) !== null && _this$responder27 !== void 0 && _this$responder27.canDecreaseNestingLevel()) {
+        return this.withTargetDOMRange(function () {
+          var _this$responder28;
+          return (_this$responder28 = this.responder) === null || _this$responder28 === void 0 ? void 0 : _this$responder28.decreaseNestingLevel();
+        });
+      }
+    },
+    formatRemove() {
+      this.withTargetDOMRange(function () {
+        for (const attributeName in (_this$responder29 = this.responder) === null || _this$responder29 === void 0 ? void 0 : _this$responder29.getCurrentAttributes()) {
+          var _this$responder29, _this$responder30;
+          (_this$responder30 = this.responder) === null || _this$responder30 === void 0 || _this$responder30.removeCurrentAttribute(attributeName);
+        }
+      });
+    },
+    formatSetBlockTextDirection() {
+      return this.activateAttributeIfSupported("blockDir", this.event.data);
+    },
+    formatSetInlineTextDirection() {
+      return this.activateAttributeIfSupported("textDir", this.event.data);
+    },
+    formatStrikeThrough() {
+      return this.toggleAttributeIfSupported("strike");
+    },
+    formatSubscript() {
+      return this.toggleAttributeIfSupported("sub");
+    },
+    formatSuperscript() {
+      return this.toggleAttributeIfSupported("sup");
+    },
+    formatUnderline() {
+      return this.toggleAttributeIfSupported("underline");
+    },
+    historyRedo() {
+      var _this$delegate15;
+      return (_this$delegate15 = this.delegate) === null || _this$delegate15 === void 0 ? void 0 : _this$delegate15.inputControllerWillPerformRedo();
+    },
+    historyUndo() {
+      var _this$delegate16;
+      return (_this$delegate16 = this.delegate) === null || _this$delegate16 === void 0 ? void 0 : _this$delegate16.inputControllerWillPerformUndo();
+    },
+    insertCompositionText() {
+      this.composing = true;
+      return this.insertString(this.event.data);
+    },
+    insertFromComposition() {
+      this.composing = false;
+      return this.insertString(this.event.data);
+    },
+    insertFromDrop() {
+      const range = this.deleteByDragRange;
+      if (range) {
+        var _this$delegate17;
+        this.deleteByDragRange = null;
+        (_this$delegate17 = this.delegate) === null || _this$delegate17 === void 0 || _this$delegate17.inputControllerWillMoveText();
+        return this.withTargetDOMRange(function () {
+          var _this$responder31;
+          return (_this$responder31 = this.responder) === null || _this$responder31 === void 0 ? void 0 : _this$responder31.moveTextFromRange(range);
+        });
+      }
+    },
+    insertFromPaste() {
+      const {
+        dataTransfer
+      } = this.event;
+      const paste = {
+        dataTransfer
+      };
+      const href = dataTransfer.getData("URL");
+      const html = dataTransfer.getData("text/html");
+      if (href) {
+        var _this$delegate18;
+        let string;
+        this.event.preventDefault();
+        paste.type = "text/html";
+        const name = dataTransfer.getData("public.url-name");
+        if (name) {
+          string = squishBreakableWhitespace(name).trim();
+        } else {
+          string = href;
+        }
+        paste.html = this.createLinkHTML(href, string);
+        (_this$delegate18 = this.delegate) === null || _this$delegate18 === void 0 || _this$delegate18.inputControllerWillPaste(paste);
+        this.withTargetDOMRange(function () {
+          var _this$responder32;
+          return (_this$responder32 = this.responder) === null || _this$responder32 === void 0 ? void 0 : _this$responder32.insertHTML(paste.html);
+        });
+        this.afterRender = () => {
+          var _this$delegate19;
+          return (_this$delegate19 = this.delegate) === null || _this$delegate19 === void 0 ? void 0 : _this$delegate19.inputControllerDidPaste(paste);
+        };
+      } else if (dataTransferIsPlainText(dataTransfer)) {
+        var _this$delegate20;
+        paste.type = "text/plain";
+        paste.string = dataTransfer.getData("text/plain");
+        (_this$delegate20 = this.delegate) === null || _this$delegate20 === void 0 || _this$delegate20.inputControllerWillPaste(paste);
+        this.withTargetDOMRange(function () {
+          var _this$responder33;
+          return (_this$responder33 = this.responder) === null || _this$responder33 === void 0 ? void 0 : _this$responder33.insertString(paste.string);
+        });
+        this.afterRender = () => {
+          var _this$delegate21;
+          return (_this$delegate21 = this.delegate) === null || _this$delegate21 === void 0 ? void 0 : _this$delegate21.inputControllerDidPaste(paste);
+        };
+      } else if (processableFilePaste(this.event)) {
+        var _this$delegate22;
+        paste.type = "File";
+        paste.file = dataTransfer.files[0];
+        (_this$delegate22 = this.delegate) === null || _this$delegate22 === void 0 || _this$delegate22.inputControllerWillPaste(paste);
+        this.withTargetDOMRange(function () {
+          var _this$responder34;
+          return (_this$responder34 = this.responder) === null || _this$responder34 === void 0 ? void 0 : _this$responder34.insertFile(paste.file);
+        });
+        this.afterRender = () => {
+          var _this$delegate23;
+          return (_this$delegate23 = this.delegate) === null || _this$delegate23 === void 0 ? void 0 : _this$delegate23.inputControllerDidPaste(paste);
+        };
+      } else if (html) {
+        var _this$delegate24;
+        this.event.preventDefault();
+        paste.type = "text/html";
+        paste.html = html;
+        (_this$delegate24 = this.delegate) === null || _this$delegate24 === void 0 || _this$delegate24.inputControllerWillPaste(paste);
+        this.withTargetDOMRange(function () {
+          var _this$responder35;
+          return (_this$responder35 = this.responder) === null || _this$responder35 === void 0 ? void 0 : _this$responder35.insertHTML(paste.html);
+        });
+        this.afterRender = () => {
+          var _this$delegate25;
+          return (_this$delegate25 = this.delegate) === null || _this$delegate25 === void 0 ? void 0 : _this$delegate25.inputControllerDidPaste(paste);
+        };
+      }
+    },
+    insertFromYank() {
+      return this.insertString(this.event.data);
+    },
+    insertLineBreak() {
+      return this.insertString("\n");
+    },
+    insertLink() {
+      return this.activateAttributeIfSupported("href", this.event.data);
+    },
+    insertOrderedList() {
+      return this.toggleAttributeIfSupported("number");
+    },
+    insertParagraph() {
+      var _this$delegate26;
+      (_this$delegate26 = this.delegate) === null || _this$delegate26 === void 0 || _this$delegate26.inputControllerWillPerformTyping();
+      return this.withTargetDOMRange(function () {
+        var _this$responder36;
+        return (_this$responder36 = this.responder) === null || _this$responder36 === void 0 ? void 0 : _this$responder36.insertLineBreak();
+      });
+    },
+    insertReplacementText() {
+      const replacement = this.event.dataTransfer.getData("text/plain");
+      const domRange = this.event.getTargetRanges()[0];
+      this.withTargetDOMRange(domRange, () => {
+        this.insertString(replacement, {
+          updatePosition: false
+        });
+      });
+    },
+    insertText() {
+      var _this$event$dataTrans;
+      return this.insertString(this.event.data || ((_this$event$dataTrans = this.event.dataTransfer) === null || _this$event$dataTrans === void 0 ? void 0 : _this$event$dataTrans.getData("text/plain")));
+    },
+    insertTranspose() {
+      return this.insertString(this.event.data);
+    },
+    insertUnorderedList() {
+      return this.toggleAttributeIfSupported("bullet");
+    }
+  });
+  const staticRangeToRange = function (staticRange) {
+    const range = document.createRange();
+    range.setStart(staticRange.startContainer, staticRange.startOffset);
+    range.setEnd(staticRange.endContainer, staticRange.endOffset);
+    return range;
+  };
+
+  // Event helpers
+
+  const dragEventHasFiles = event => {
+    var _event$dataTransfer;
+    return Array.from(((_event$dataTransfer = event.dataTransfer) === null || _event$dataTransfer === void 0 ? void 0 : _event$dataTransfer.types) || []).includes("Files");
+  };
+  const processableFilePaste = event => {
+    var _event$dataTransfer$f;
+    // Paste events that only have files are handled by the paste event handler,
+    // to work around Safari not supporting beforeinput.insertFromPaste for files.
+
+    // MS Office text pastes include a file with a screenshot of the text, but we should
+    // handle them as text pastes.
+    return ((_event$dataTransfer$f = event.dataTransfer.files) === null || _event$dataTransfer$f === void 0 ? void 0 : _event$dataTransfer$f[0]) && !pasteEventHasFilesOnly(event) && !dataTransferIsMsOfficePaste(event);
+  };
+  const pasteEventHasFilesOnly = function (event) {
+    const clipboard = event.clipboardData;
+    if (clipboard) {
+      const fileTypes = Array.from(clipboard.types).filter(type => type.match(/file/i)); // "Files", "application/x-moz-file"
+      return fileTypes.length === clipboard.types.length && clipboard.files.length >= 1;
+    }
+  };
+  const pasteEventHasPlainTextOnly = function (event) {
+    const clipboard = event.clipboardData;
+    if (clipboard) {
+      return clipboard.types.includes("text/plain") && clipboard.types.length === 1;
+    }
+  };
+  const keyboardCommandFromKeyEvent = function (event) {
+    const command = [];
+    if (event.altKey) {
+      command.push("alt");
+    }
+    if (event.shiftKey) {
+      command.push("shift");
+    }
+    command.push(event.key);
+    return command;
+  };
+  const pointFromEvent = event => ({
+    x: event.clientX,
+    y: event.clientY
+  });
+
+  const attributeButtonSelector = "[data-trix-attribute]";
+  const actionButtonSelector = "[data-trix-action]";
+  const toolbarButtonSelector = "".concat(attributeButtonSelector, ", ").concat(actionButtonSelector);
+  const dialogSelector = "[data-trix-dialog]";
+  const activeDialogSelector = "".concat(dialogSelector, "[data-trix-active]");
+  const dialogButtonSelector = "".concat(dialogSelector, " [data-trix-method]");
+  const dialogInputSelector = "".concat(dialogSelector, " [data-trix-input]");
+  const getInputForDialog = (element, attributeName) => {
+    if (!attributeName) {
+      attributeName = getAttributeName(element);
+    }
+    return element.querySelector("[data-trix-input][name='".concat(attributeName, "']"));
+  };
+  const getActionName = element => element.getAttribute("data-trix-action");
+  const getAttributeName = element => {
+    return element.getAttribute("data-trix-attribute") || element.getAttribute("data-trix-dialog-attribute");
+  };
+  const getDialogName = element => element.getAttribute("data-trix-dialog");
+  class ToolbarController extends BasicObject {
+    constructor(element) {
+      super(element);
+      this.didClickActionButton = this.didClickActionButton.bind(this);
+      this.didClickAttributeButton = this.didClickAttributeButton.bind(this);
+      this.didClickDialogButton = this.didClickDialogButton.bind(this);
+      this.didKeyDownDialogInput = this.didKeyDownDialogInput.bind(this);
+      this.element = element;
+      this.attributes = {};
+      this.actions = {};
+      this.resetDialogInputs();
+      handleEvent("mousedown", {
+        onElement: this.element,
+        matchingSelector: actionButtonSelector,
+        withCallback: this.didClickActionButton
+      });
+      handleEvent("mousedown", {
+        onElement: this.element,
+        matchingSelector: attributeButtonSelector,
+        withCallback: this.didClickAttributeButton
+      });
+      handleEvent("click", {
+        onElement: this.element,
+        matchingSelector: toolbarButtonSelector,
+        preventDefault: true
+      });
+      handleEvent("click", {
+        onElement: this.element,
+        matchingSelector: dialogButtonSelector,
+        withCallback: this.didClickDialogButton
+      });
+      handleEvent("keydown", {
+        onElement: this.element,
+        matchingSelector: dialogInputSelector,
+        withCallback: this.didKeyDownDialogInput
+      });
+    }
+
+    // Event handlers
+
+    didClickActionButton(event, element) {
+      var _this$delegate;
+      (_this$delegate = this.delegate) === null || _this$delegate === void 0 || _this$delegate.toolbarDidClickButton();
+      event.preventDefault();
+      const actionName = getActionName(element);
+      if (this.getDialog(actionName)) {
+        return this.toggleDialog(actionName);
+      } else {
+        var _this$delegate2;
+        return (_this$delegate2 = this.delegate) === null || _this$delegate2 === void 0 ? void 0 : _this$delegate2.toolbarDidInvokeAction(actionName, element);
+      }
+    }
+    didClickAttributeButton(event, element) {
+      var _this$delegate3;
+      (_this$delegate3 = this.delegate) === null || _this$delegate3 === void 0 || _this$delegate3.toolbarDidClickButton();
+      event.preventDefault();
+      const attributeName = getAttributeName(element);
+      if (this.getDialog(attributeName)) {
+        this.toggleDialog(attributeName);
+      } else {
+        var _this$delegate4;
+        (_this$delegate4 = this.delegate) === null || _this$delegate4 === void 0 || _this$delegate4.toolbarDidToggleAttribute(attributeName);
+      }
+      return this.refreshAttributeButtons();
+    }
+    didClickDialogButton(event, element) {
+      const dialogElement = findClosestElementFromNode(element, {
+        matchingSelector: dialogSelector
+      });
+      const method = element.getAttribute("data-trix-method");
+      return this[method].call(this, dialogElement);
+    }
+    didKeyDownDialogInput(event, element) {
+      if (event.keyCode === 13) {
+        // Enter key
+        event.preventDefault();
+        const attribute = element.getAttribute("name");
+        const dialog = this.getDialog(attribute);
+        this.setAttribute(dialog);
+      }
+      if (event.keyCode === 27) {
+        // Escape key
+        event.preventDefault();
+        return this.hideDialog();
+      }
+    }
+
+    // Action buttons
+
+    updateActions(actions) {
+      this.actions = actions;
+      return this.refreshActionButtons();
+    }
+    refreshActionButtons() {
+      return this.eachActionButton((element, actionName) => {
+        element.disabled = this.actions[actionName] === false;
+      });
+    }
+    eachActionButton(callback) {
+      return Array.from(this.element.querySelectorAll(actionButtonSelector)).map(element => callback(element, getActionName(element)));
+    }
+
+    // Attribute buttons
+
+    updateAttributes(attributes) {
+      this.attributes = attributes;
+      return this.refreshAttributeButtons();
+    }
+    refreshAttributeButtons() {
+      return this.eachAttributeButton((element, attributeName) => {
+        element.disabled = this.attributes[attributeName] === false;
+        if (this.attributes[attributeName] || this.dialogIsVisible(attributeName)) {
+          element.setAttribute("data-trix-active", "");
+          return element.classList.add("trix-active");
+        } else {
+          element.removeAttribute("data-trix-active");
+          return element.classList.remove("trix-active");
+        }
+      });
+    }
+    eachAttributeButton(callback) {
+      return Array.from(this.element.querySelectorAll(attributeButtonSelector)).map(element => callback(element, getAttributeName(element)));
+    }
+    applyKeyboardCommand(keys) {
+      const keyString = JSON.stringify(keys.sort());
+      for (const button of Array.from(this.element.querySelectorAll("[data-trix-key]"))) {
+        const buttonKeys = button.getAttribute("data-trix-key").split("+");
+        const buttonKeyString = JSON.stringify(buttonKeys.sort());
+        if (buttonKeyString === keyString) {
+          triggerEvent("mousedown", {
+            onElement: button
+          });
+          return true;
+        }
+      }
+      return false;
+    }
+
+    // Dialogs
+
+    dialogIsVisible(dialogName) {
+      const element = this.getDialog(dialogName);
+      if (element) {
+        return element.hasAttribute("data-trix-active");
+      }
+    }
+    toggleDialog(dialogName) {
+      if (this.dialogIsVisible(dialogName)) {
+        return this.hideDialog();
+      } else {
+        return this.showDialog(dialogName);
+      }
+    }
+    showDialog(dialogName) {
+      var _this$delegate5, _this$delegate6;
+      this.hideDialog();
+      (_this$delegate5 = this.delegate) === null || _this$delegate5 === void 0 || _this$delegate5.toolbarWillShowDialog();
+      const element = this.getDialog(dialogName);
+      element.setAttribute("data-trix-active", "");
+      element.classList.add("trix-active");
+      Array.from(element.querySelectorAll("input[disabled]")).forEach(disabledInput => {
+        disabledInput.removeAttribute("disabled");
+      });
+      const attributeName = getAttributeName(element);
+      if (attributeName) {
+        const input = getInputForDialog(element, dialogName);
+        if (input) {
+          input.value = this.attributes[attributeName] || "";
+          input.select();
+        }
+      }
+      return (_this$delegate6 = this.delegate) === null || _this$delegate6 === void 0 ? void 0 : _this$delegate6.toolbarDidShowDialog(dialogName);
+    }
+    setAttribute(dialogElement) {
+      const attributeName = getAttributeName(dialogElement);
+      const input = getInputForDialog(dialogElement, attributeName);
+      if (input.willValidate && !input.checkValidity()) {
+        input.setAttribute("data-trix-validate", "");
+        input.classList.add("trix-validate");
+        return input.focus();
+      } else {
+        var _this$delegate7;
+        (_this$delegate7 = this.delegate) === null || _this$delegate7 === void 0 || _this$delegate7.toolbarDidUpdateAttribute(attributeName, input.value);
+        return this.hideDialog();
+      }
+    }
+    removeAttribute(dialogElement) {
+      var _this$delegate8;
+      const attributeName = getAttributeName(dialogElement);
+      (_this$delegate8 = this.delegate) === null || _this$delegate8 === void 0 || _this$delegate8.toolbarDidRemoveAttribute(attributeName);
+      return this.hideDialog();
+    }
+    hideDialog() {
+      const element = this.element.querySelector(activeDialogSelector);
+      if (element) {
+        var _this$delegate9;
+        element.removeAttribute("data-trix-active");
+        element.classList.remove("trix-active");
+        this.resetDialogInputs();
+        return (_this$delegate9 = this.delegate) === null || _this$delegate9 === void 0 ? void 0 : _this$delegate9.toolbarDidHideDialog(getDialogName(element));
+      }
+    }
+    resetDialogInputs() {
+      Array.from(this.element.querySelectorAll(dialogInputSelector)).forEach(input => {
+        input.setAttribute("disabled", "disabled");
+        input.removeAttribute("data-trix-validate");
+        input.classList.remove("trix-validate");
+      });
+    }
+    getDialog(dialogName) {
+      return this.element.querySelector("[data-trix-dialog=".concat(dialogName, "]"));
+    }
+  }
+
+  const snapshotsAreEqual = (a, b) => rangesAreEqual(a.selectedRange, b.selectedRange) && a.document.isEqualTo(b.document);
+  class EditorController extends Controller {
+    constructor(_ref) {
+      let {
+        editorElement,
+        document,
+        html
+      } = _ref;
+      super(...arguments);
+      this.editorElement = editorElement;
+      this.selectionManager = new SelectionManager(this.editorElement);
+      this.selectionManager.delegate = this;
+      this.composition = new Composition();
+      this.composition.delegate = this;
+      this.attachmentManager = new AttachmentManager(this.composition.getAttachments());
+      this.attachmentManager.delegate = this;
+      this.inputController = input.getLevel() === 2 ? new Level2InputController(this.editorElement) : new Level0InputController(this.editorElement);
+      this.inputController.delegate = this;
+      this.inputController.responder = this.composition;
+      this.compositionController = new CompositionController(this.editorElement, this.composition);
+      this.compositionController.delegate = this;
+      this.toolbarController = new ToolbarController(this.editorElement.toolbarElement);
+      this.toolbarController.delegate = this;
+      this.editor = new Editor(this.composition, this.selectionManager, this.editorElement);
+      if (document) {
+        this.editor.loadDocument(document);
+      } else {
+        this.editor.loadHTML(html);
+      }
+    }
+    registerSelectionManager() {
+      return selectionChangeObserver.registerSelectionManager(this.selectionManager);
+    }
+    unregisterSelectionManager() {
+      return selectionChangeObserver.unregisterSelectionManager(this.selectionManager);
+    }
+    render() {
+      return this.compositionController.render();
+    }
+    reparse() {
+      return this.composition.replaceHTML(this.editorElement.innerHTML);
+    }
+
+    // Composition delegate
+
+    compositionDidChangeDocument(document) {
+      this.notifyEditorElement("document-change");
+      if (!this.handlingInput) {
+        return this.render();
+      }
+    }
+    compositionDidChangeCurrentAttributes(currentAttributes) {
+      this.currentAttributes = currentAttributes;
+      this.toolbarController.updateAttributes(this.currentAttributes);
+      this.updateCurrentActions();
+      return this.notifyEditorElement("attributes-change", {
+        attributes: this.currentAttributes
+      });
+    }
+    compositionDidPerformInsertionAtRange(range) {
+      if (this.pasting) {
+        this.pastedRange = range;
+      }
+    }
+    compositionShouldAcceptFile(file) {
+      return this.notifyEditorElement("file-accept", {
+        file
+      });
+    }
+    compositionDidAddAttachment(attachment) {
+      const managedAttachment = this.attachmentManager.manageAttachment(attachment);
+      return this.notifyEditorElement("attachment-add", {
+        attachment: managedAttachment
+      });
+    }
+    compositionDidEditAttachment(attachment) {
+      this.compositionController.rerenderViewForObject(attachment);
+      const managedAttachment = this.attachmentManager.manageAttachment(attachment);
+      this.notifyEditorElement("attachment-edit", {
+        attachment: managedAttachment
+      });
+      return this.notifyEditorElement("change");
+    }
+    compositionDidChangeAttachmentPreviewURL(attachment) {
+      this.compositionController.invalidateViewForObject(attachment);
+      return this.notifyEditorElement("change");
+    }
+    compositionDidRemoveAttachment(attachment) {
+      const managedAttachment = this.attachmentManager.unmanageAttachment(attachment);
+      return this.notifyEditorElement("attachment-remove", {
+        attachment: managedAttachment
+      });
+    }
+    compositionDidStartEditingAttachment(attachment, options) {
+      this.attachmentLocationRange = this.composition.document.getLocationRangeOfAttachment(attachment);
+      this.compositionController.installAttachmentEditorForAttachment(attachment, options);
+      return this.selectionManager.setLocationRange(this.attachmentLocationRange);
+    }
+    compositionDidStopEditingAttachment(attachment) {
+      this.compositionController.uninstallAttachmentEditor();
+      this.attachmentLocationRange = null;
+    }
+    compositionDidRequestChangingSelectionToLocationRange(locationRange) {
+      if (this.loadingSnapshot && !this.isFocused()) return;
+      this.requestedLocationRange = locationRange;
+      this.compositionRevisionWhenLocationRangeRequested = this.composition.revision;
+      if (!this.handlingInput) {
+        return this.render();
+      }
+    }
+    compositionWillLoadSnapshot() {
+      this.loadingSnapshot = true;
+    }
+    compositionDidLoadSnapshot() {
+      this.compositionController.refreshViewCache();
+      this.render();
+      this.loadingSnapshot = false;
+    }
+    getSelectionManager() {
+      return this.selectionManager;
+    }
+
+    // Attachment manager delegate
+
+    attachmentManagerDidRequestRemovalOfAttachment(attachment) {
+      return this.removeAttachment(attachment);
+    }
+
+    // Document controller delegate
+
+    compositionControllerWillSyncDocumentView() {
+      this.inputController.editorWillSyncDocumentView();
+      this.selectionManager.lock();
+      return this.selectionManager.clearSelection();
+    }
+    compositionControllerDidSyncDocumentView() {
+      this.inputController.editorDidSyncDocumentView();
+      this.selectionManager.unlock();
+      this.updateCurrentActions();
+      return this.notifyEditorElement("sync");
+    }
+    compositionControllerDidRender() {
+      if (this.requestedLocationRange) {
+        if (this.compositionRevisionWhenLocationRangeRequested === this.composition.revision) {
+          this.selectionManager.setLocationRange(this.requestedLocationRange);
+        }
+        this.requestedLocationRange = null;
+        this.compositionRevisionWhenLocationRangeRequested = null;
+      }
+      if (this.renderedCompositionRevision !== this.composition.revision) {
+        this.runEditorFilters();
+        this.composition.updateCurrentAttributes();
+        this.notifyEditorElement("render");
+      }
+      this.renderedCompositionRevision = this.composition.revision;
+    }
+    compositionControllerDidFocus() {
+      if (this.isFocusedInvisibly()) {
+        this.setLocationRange({
+          index: 0,
+          offset: 0
+        });
+      }
+      this.toolbarController.hideDialog();
+      return this.notifyEditorElement("focus");
+    }
+    compositionControllerDidBlur() {
+      return this.notifyEditorElement("blur");
+    }
+    compositionControllerDidSelectAttachment(attachment, options) {
+      this.toolbarController.hideDialog();
+      return this.composition.editAttachment(attachment, options);
+    }
+    compositionControllerDidRequestDeselectingAttachment(attachment) {
+      const locationRange = this.attachmentLocationRange || this.composition.document.getLocationRangeOfAttachment(attachment);
+      return this.selectionManager.setLocationRange(locationRange[1]);
+    }
+    compositionControllerWillUpdateAttachment(attachment) {
+      return this.editor.recordUndoEntry("Edit Attachment", {
+        context: attachment.id,
+        consolidatable: true
+      });
+    }
+    compositionControllerDidRequestRemovalOfAttachment(attachment) {
+      return this.removeAttachment(attachment);
+    }
+
+    // Input controller delegate
+
+    inputControllerWillHandleInput() {
+      this.handlingInput = true;
+      this.requestedRender = false;
+    }
+    inputControllerDidRequestRender() {
+      this.requestedRender = true;
+    }
+    inputControllerDidHandleInput() {
+      this.handlingInput = false;
+      if (this.requestedRender) {
+        this.requestedRender = false;
+        return this.render();
+      }
+    }
+    inputControllerDidAllowUnhandledInput() {
+      return this.notifyEditorElement("change");
+    }
+    inputControllerDidRequestReparse() {
+      return this.reparse();
+    }
+    inputControllerWillPerformTyping() {
+      return this.recordTypingUndoEntry();
+    }
+    inputControllerWillPerformFormatting(attributeName) {
+      return this.recordFormattingUndoEntry(attributeName);
+    }
+    inputControllerWillCutText() {
+      return this.editor.recordUndoEntry("Cut");
+    }
+    inputControllerWillPaste(paste) {
+      this.editor.recordUndoEntry("Paste");
+      this.pasting = true;
+      return this.notifyEditorElement("before-paste", {
+        paste
+      });
+    }
+    inputControllerDidPaste(paste) {
+      paste.range = this.pastedRange;
+      this.pastedRange = null;
+      this.pasting = null;
+      return this.notifyEditorElement("paste", {
+        paste
+      });
+    }
+    inputControllerWillMoveText() {
+      return this.editor.recordUndoEntry("Move");
+    }
+    inputControllerWillAttachFiles() {
+      return this.editor.recordUndoEntry("Drop Files");
+    }
+    inputControllerWillPerformUndo() {
+      return this.editor.undo();
+    }
+    inputControllerWillPerformRedo() {
+      return this.editor.redo();
+    }
+    inputControllerDidReceiveKeyboardCommand(keys) {
+      return this.toolbarController.applyKeyboardCommand(keys);
+    }
+    inputControllerDidStartDrag() {
+      this.locationRangeBeforeDrag = this.selectionManager.getLocationRange();
+    }
+    inputControllerDidReceiveDragOverPoint(point) {
+      return this.selectionManager.setLocationRangeFromPointRange(point);
+    }
+    inputControllerDidCancelDrag() {
+      this.selectionManager.setLocationRange(this.locationRangeBeforeDrag);
+      this.locationRangeBeforeDrag = null;
+    }
+
+    // Selection manager delegate
+
+    locationRangeDidChange(locationRange) {
+      this.composition.updateCurrentAttributes();
+      this.updateCurrentActions();
+      if (this.attachmentLocationRange && !rangesAreEqual(this.attachmentLocationRange, locationRange)) {
+        this.composition.stopEditingAttachment();
+      }
+      return this.notifyEditorElement("selection-change");
+    }
+
+    // Toolbar controller delegate
+
+    toolbarDidClickButton() {
+      if (!this.getLocationRange()) {
+        return this.setLocationRange({
+          index: 0,
+          offset: 0
+        });
+      }
+    }
+    toolbarDidInvokeAction(actionName, invokingElement) {
+      return this.invokeAction(actionName, invokingElement);
+    }
+    toolbarDidToggleAttribute(attributeName) {
+      this.recordFormattingUndoEntry(attributeName);
+      this.composition.toggleCurrentAttribute(attributeName);
+      this.render();
+      if (!this.selectionFrozen) {
+        return this.editorElement.focus();
+      }
+    }
+    toolbarDidUpdateAttribute(attributeName, value) {
+      this.recordFormattingUndoEntry(attributeName);
+      this.composition.setCurrentAttribute(attributeName, value);
+      this.render();
+      if (!this.selectionFrozen) {
+        return this.editorElement.focus();
+      }
+    }
+    toolbarDidRemoveAttribute(attributeName) {
+      this.recordFormattingUndoEntry(attributeName);
+      this.composition.removeCurrentAttribute(attributeName);
+      this.render();
+      if (!this.selectionFrozen) {
+        return this.editorElement.focus();
+      }
+    }
+    toolbarWillShowDialog(dialogElement) {
+      this.composition.expandSelectionForEditing();
+      return this.freezeSelection();
+    }
+    toolbarDidShowDialog(dialogName) {
+      return this.notifyEditorElement("toolbar-dialog-show", {
+        dialogName
+      });
+    }
+    toolbarDidHideDialog(dialogName) {
+      this.thawSelection();
+      this.editorElement.focus();
+      return this.notifyEditorElement("toolbar-dialog-hide", {
+        dialogName
+      });
+    }
+
+    // Selection
+
+    freezeSelection() {
+      if (!this.selectionFrozen) {
+        this.selectionManager.lock();
+        this.composition.freezeSelection();
+        this.selectionFrozen = true;
+        return this.render();
+      }
+    }
+    thawSelection() {
+      if (this.selectionFrozen) {
+        this.composition.thawSelection();
+        this.selectionManager.unlock();
+        this.selectionFrozen = false;
+        return this.render();
+      }
+    }
+    canInvokeAction(actionName) {
+      if (this.actionIsExternal(actionName)) {
+        return true;
+      } else {
+        var _this$actions$actionN;
+        return !!((_this$actions$actionN = this.actions[actionName]) !== null && _this$actions$actionN !== void 0 && (_this$actions$actionN = _this$actions$actionN.test) !== null && _this$actions$actionN !== void 0 && _this$actions$actionN.call(this));
+      }
+    }
+    invokeAction(actionName, invokingElement) {
+      if (this.actionIsExternal(actionName)) {
+        return this.notifyEditorElement("action-invoke", {
+          actionName,
+          invokingElement
+        });
+      } else {
+        var _this$actions$actionN2;
+        return (_this$actions$actionN2 = this.actions[actionName]) === null || _this$actions$actionN2 === void 0 || (_this$actions$actionN2 = _this$actions$actionN2.perform) === null || _this$actions$actionN2 === void 0 ? void 0 : _this$actions$actionN2.call(this);
+      }
+    }
+    actionIsExternal(actionName) {
+      return /^x-./.test(actionName);
+    }
+    getCurrentActions() {
+      const result = {};
+      for (const actionName in this.actions) {
+        result[actionName] = this.canInvokeAction(actionName);
+      }
+      return result;
+    }
+    updateCurrentActions() {
+      const currentActions = this.getCurrentActions();
+      if (!objectsAreEqual(currentActions, this.currentActions)) {
+        this.currentActions = currentActions;
+        this.toolbarController.updateActions(this.currentActions);
+        return this.notifyEditorElement("actions-change", {
+          actions: this.currentActions
+        });
+      }
+    }
+
+    // Editor filters
+
+    runEditorFilters() {
+      let snapshot = this.composition.getSnapshot();
+      Array.from(this.editor.filters).forEach(filter => {
+        const {
+          document,
+          selectedRange
+        } = snapshot;
+        snapshot = filter.call(this.editor, snapshot) || {};
+        if (!snapshot.document) {
+          snapshot.document = document;
+        }
+        if (!snapshot.selectedRange) {
+          snapshot.selectedRange = selectedRange;
+        }
+      });
+      if (!snapshotsAreEqual(snapshot, this.composition.getSnapshot())) {
+        return this.composition.loadSnapshot(snapshot);
+      }
+    }
+
+    // Private
+
+    updateInputElement() {
+      const element = this.compositionController.getSerializableElement();
+      const value = serializeToContentType(element, "text/html");
+      return this.editorElement.setFormValue(value);
+    }
+    notifyEditorElement(message, data) {
+      switch (message) {
+        case "document-change":
+          this.documentChangedSinceLastRender = true;
+          break;
+        case "render":
+          if (this.documentChangedSinceLastRender) {
+            this.documentChangedSinceLastRender = false;
+            this.notifyEditorElement("change");
+          }
+          break;
+        case "change":
+        case "attachment-add":
+        case "attachment-edit":
+        case "attachment-remove":
+          this.updateInputElement();
+          break;
+      }
+      return this.editorElement.notify(message, data);
+    }
+    removeAttachment(attachment) {
+      this.editor.recordUndoEntry("Delete Attachment");
+      this.composition.removeAttachment(attachment);
+      return this.render();
+    }
+    recordFormattingUndoEntry(attributeName) {
+      const blockConfig = getBlockConfig(attributeName);
+      const locationRange = this.selectionManager.getLocationRange();
+      if (blockConfig || !rangeIsCollapsed(locationRange)) {
+        return this.editor.recordUndoEntry("Formatting", {
+          context: this.getUndoContext(),
+          consolidatable: true
+        });
+      }
+    }
+    recordTypingUndoEntry() {
+      return this.editor.recordUndoEntry("Typing", {
+        context: this.getUndoContext(this.currentAttributes),
+        consolidatable: true
+      });
+    }
+    getUndoContext() {
+      for (var _len = arguments.length, context = new Array(_len), _key = 0; _key < _len; _key++) {
+        context[_key] = arguments[_key];
+      }
+      return [this.getLocationContext(), this.getTimeContext(), ...Array.from(context)];
+    }
+    getLocationContext() {
+      const locationRange = this.selectionManager.getLocationRange();
+      if (rangeIsCollapsed(locationRange)) {
+        return locationRange[0].index;
+      } else {
+        return locationRange;
+      }
+    }
+    getTimeContext() {
+      if (undo.interval > 0) {
+        return Math.floor(new Date().getTime() / undo.interval);
+      } else {
+        return 0;
+      }
+    }
+    isFocused() {
+      var _this$editorElement$o;
+      return this.editorElement === ((_this$editorElement$o = this.editorElement.ownerDocument) === null || _this$editorElement$o === void 0 ? void 0 : _this$editorElement$o.activeElement);
+    }
+
+    // Detect "Cursor disappears sporadically" Firefox bug.
+    // - https://bugzilla.mozilla.org/show_bug.cgi?id=226301
+    isFocusedInvisibly() {
+      return this.isFocused() && !this.getLocationRange();
+    }
+    get actions() {
+      return this.constructor.actions;
+    }
+  }
+  _defineProperty(EditorController, "actions", {
+    undo: {
+      test() {
+        return this.editor.canUndo();
+      },
+      perform() {
+        return this.editor.undo();
+      }
+    },
+    redo: {
+      test() {
+        return this.editor.canRedo();
+      },
+      perform() {
+        return this.editor.redo();
+      }
+    },
+    link: {
+      test() {
+        return this.editor.canActivateAttribute("href");
+      }
+    },
+    increaseNestingLevel: {
+      test() {
+        return this.editor.canIncreaseNestingLevel();
+      },
+      perform() {
+        return this.editor.increaseNestingLevel() && this.render();
+      }
+    },
+    decreaseNestingLevel: {
+      test() {
+        return this.editor.canDecreaseNestingLevel();
+      },
+      perform() {
+        return this.editor.decreaseNestingLevel() && this.render();
+      }
+    },
+    attachFiles: {
+      test() {
+        return true;
+      },
+      perform() {
+        return input.pickFiles(this.editor.insertFiles);
+      }
+    }
+  });
+  EditorController.proxyMethod("getSelectionManager().setLocationRange");
+  EditorController.proxyMethod("getSelectionManager().getLocationRange");
+
+  var controllers = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    AttachmentEditorController: AttachmentEditorController,
+    CompositionController: CompositionController,
+    Controller: Controller,
+    EditorController: EditorController,
+    InputController: InputController,
+    Level0InputController: Level0InputController,
+    Level2InputController: Level2InputController,
+    ToolbarController: ToolbarController
+  });
+
+  var observers = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    MutationObserver: MutationObserver,
+    SelectionChangeObserver: SelectionChangeObserver
+  });
+
+  var operations = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    FileVerificationOperation: FileVerificationOperation,
+    ImagePreloadOperation: ImagePreloadOperation
+  });
+
+  installDefaultCSSForTagName("trix-toolbar", "%t {\n  display: block;\n}\n\n%t {\n  white-space: nowrap;\n}\n\n%t [data-trix-dialog] {\n  display: none;\n}\n\n%t [data-trix-dialog][data-trix-active] {\n  display: block;\n}\n\n%t [data-trix-dialog] [data-trix-validate]:invalid {\n  background-color: #ffdddd;\n}");
+  class TrixToolbarElement extends HTMLElement {
+    // Element lifecycle
+
+    connectedCallback() {
+      if (this.innerHTML === "") {
+        this.innerHTML = toolbar.getDefaultHTML();
+      }
+    }
+  }
+
+  let id = 0;
+
+  // Contenteditable support helpers
+
+  const autofocus = function (element) {
+    if (!document.querySelector(":focus")) {
+      if (element.hasAttribute("autofocus") && document.querySelector("[autofocus]") === element) {
+        return element.focus();
+      }
+    }
+  };
+  const makeEditable = function (element) {
+    if (element.hasAttribute("contenteditable")) {
+      return;
+    }
+    element.setAttribute("contenteditable", "");
+    return handleEventOnce("focus", {
+      onElement: element,
+      withCallback() {
+        return configureContentEditable(element);
+      }
+    });
+  };
+  const configureContentEditable = function (element) {
+    disableObjectResizing(element);
+    return setDefaultParagraphSeparator(element);
+  };
+  const disableObjectResizing = function (element) {
+    var _document$queryComman, _document;
+    if ((_document$queryComman = (_document = document).queryCommandSupported) !== null && _document$queryComman !== void 0 && _document$queryComman.call(_document, "enableObjectResizing")) {
+      document.execCommand("enableObjectResizing", false, false);
+      return handleEvent("mscontrolselect", {
+        onElement: element,
+        preventDefault: true
+      });
+    }
+  };
+  const setDefaultParagraphSeparator = function (element) {
+    var _document$queryComman2, _document2;
+    if ((_document$queryComman2 = (_document2 = document).queryCommandSupported) !== null && _document$queryComman2 !== void 0 && _document$queryComman2.call(_document2, "DefaultParagraphSeparator")) {
+      const {
+        tagName
+      } = attributes.default;
+      if (["div", "p"].includes(tagName)) {
+        return document.execCommand("DefaultParagraphSeparator", false, tagName);
+      }
+    }
+  };
+
+  // Accessibility helpers
+
+  const addAccessibilityRole = function (element) {
+    if (element.hasAttribute("role")) {
+      return;
+    }
+    return element.setAttribute("role", "textbox");
+  };
+  const ensureAriaLabel = function (element) {
+    if (element.hasAttribute("aria-label") || element.hasAttribute("aria-labelledby")) {
+      return;
+    }
+    const update = function () {
+      const texts = Array.from(element.labels).map(label => {
+        if (!label.contains(element)) return label.textContent;
+      }).filter(text => text);
+      const text = texts.join(" ");
+      if (text) {
+        return element.setAttribute("aria-label", text);
+      } else {
+        return element.removeAttribute("aria-label");
+      }
+    };
+    update();
+    return handleEvent("focus", {
+      onElement: element,
+      withCallback: update
+    });
+  };
+
+  // Style
+
+  const cursorTargetStyles = function () {
+    if (browser$1.forcesObjectResizing) {
+      return {
+        display: "inline",
+        width: "auto"
+      };
+    } else {
+      return {
+        display: "inline-block",
+        width: "1px"
+      };
+    }
+  }();
+  installDefaultCSSForTagName("trix-editor", "%t {\n    display: block;\n}\n\n%t:empty::before {\n    content: attr(placeholder);\n    color: graytext;\n    cursor: text;\n    pointer-events: none;\n    white-space: pre-line;\n}\n\n%t a[contenteditable=false] {\n    cursor: text;\n}\n\n%t img {\n    max-width: 100%;\n    height: auto;\n}\n\n%t ".concat(attachmentSelector, " figcaption textarea {\n    resize: none;\n}\n\n%t ").concat(attachmentSelector, " figcaption textarea.trix-autoresize-clone {\n    position: absolute;\n    left: -9999px;\n    max-height: 0px;\n}\n\n%t ").concat(attachmentSelector, " figcaption[data-trix-placeholder]:empty::before {\n    content: attr(data-trix-placeholder);\n    color: graytext;\n}\n\n%t [data-trix-cursor-target] {\n    display: ").concat(cursorTargetStyles.display, " !important;\n    width: ").concat(cursorTargetStyles.width, " !important;\n    padding: 0 !important;\n    margin: 0 !important;\n    border: none !important;\n}\n\n%t [data-trix-cursor-target=left] {\n    vertical-align: top !important;\n    margin-left: -1px !important;\n}\n\n%t [data-trix-cursor-target=right] {\n    vertical-align: bottom !important;\n    margin-right: -1px !important;\n}"));
+  var _internals = /*#__PURE__*/new WeakMap();
+  var _validate = /*#__PURE__*/new WeakSet();
+  class ElementInternalsDelegate {
+    constructor(element) {
+      _classPrivateMethodInitSpec(this, _validate);
+      _classPrivateFieldInitSpec(this, _internals, {
+        writable: true,
+        value: void 0
+      });
+      this.element = element;
+      _classPrivateFieldSet(this, _internals, element.attachInternals());
+    }
+    connectedCallback() {
+      _classPrivateMethodGet(this, _validate, _validate2).call(this);
+    }
+    disconnectedCallback() {}
+    get labels() {
+      return _classPrivateFieldGet(this, _internals).labels;
+    }
+    get disabled() {
+      var _this$element$inputEl;
+      return (_this$element$inputEl = this.element.inputElement) === null || _this$element$inputEl === void 0 ? void 0 : _this$element$inputEl.disabled;
+    }
+    set disabled(value) {
+      this.element.toggleAttribute("disabled", value);
+    }
+    get required() {
+      return this.element.hasAttribute("required");
+    }
+    set required(value) {
+      this.element.toggleAttribute("required", value);
+      _classPrivateMethodGet(this, _validate, _validate2).call(this);
+    }
+    get validity() {
+      return _classPrivateFieldGet(this, _internals).validity;
+    }
+    get validationMessage() {
+      return _classPrivateFieldGet(this, _internals).validationMessage;
+    }
+    get willValidate() {
+      return _classPrivateFieldGet(this, _internals).willValidate;
+    }
+    setFormValue(value) {
+      _classPrivateMethodGet(this, _validate, _validate2).call(this);
+    }
+    checkValidity() {
+      return _classPrivateFieldGet(this, _internals).checkValidity();
+    }
+    reportValidity() {
+      return _classPrivateFieldGet(this, _internals).reportValidity();
+    }
+    setCustomValidity(validationMessage) {
+      _classPrivateMethodGet(this, _validate, _validate2).call(this, validationMessage);
+    }
+  }
+  function _validate2() {
+    let customValidationMessage = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "";
+    const {
+      required,
+      value
+    } = this.element;
+    const valueMissing = required && !value;
+    const customError = !!customValidationMessage;
+    const input = makeElement("input", {
+      required
+    });
+    const validationMessage = customValidationMessage || input.validationMessage;
+    _classPrivateFieldGet(this, _internals).setValidity({
+      valueMissing,
+      customError
+    }, validationMessage);
+  }
+  var _focusHandler = /*#__PURE__*/new WeakMap();
+  var _resetBubbled = /*#__PURE__*/new WeakMap();
+  var _clickBubbled = /*#__PURE__*/new WeakMap();
+  class LegacyDelegate {
+    constructor(element) {
+      _classPrivateFieldInitSpec(this, _focusHandler, {
+        writable: true,
+        value: void 0
+      });
+      _classPrivateFieldInitSpec(this, _resetBubbled, {
+        writable: true,
+        value: event => {
+          if (event.defaultPrevented) return;
+          if (event.target !== this.element.form) return;
+          this.element.reset();
+        }
+      });
+      _classPrivateFieldInitSpec(this, _clickBubbled, {
+        writable: true,
+        value: event => {
+          if (event.defaultPrevented) return;
+          if (this.element.contains(event.target)) return;
+          const label = findClosestElementFromNode(event.target, {
+            matchingSelector: "label"
+          });
+          if (!label) return;
+          if (!Array.from(this.labels).includes(label)) return;
+          this.element.focus();
+        }
+      });
+      this.element = element;
+    }
+    connectedCallback() {
+      _classPrivateFieldSet(this, _focusHandler, ensureAriaLabel(this.element));
+      window.addEventListener("reset", _classPrivateFieldGet(this, _resetBubbled), false);
+      window.addEventListener("click", _classPrivateFieldGet(this, _clickBubbled), false);
+    }
+    disconnectedCallback() {
+      var _classPrivateFieldGet2;
+      (_classPrivateFieldGet2 = _classPrivateFieldGet(this, _focusHandler)) === null || _classPrivateFieldGet2 === void 0 || _classPrivateFieldGet2.destroy();
+      window.removeEventListener("reset", _classPrivateFieldGet(this, _resetBubbled), false);
+      window.removeEventListener("click", _classPrivateFieldGet(this, _clickBubbled), false);
+    }
+    get labels() {
+      const labels = [];
+      if (this.element.id && this.element.ownerDocument) {
+        labels.push(...Array.from(this.element.ownerDocument.querySelectorAll("label[for='".concat(this.element.id, "']")) || []));
+      }
+      const label = findClosestElementFromNode(this.element, {
+        matchingSelector: "label"
+      });
+      if (label) {
+        if ([this.element, null].includes(label.control)) {
+          labels.push(label);
+        }
+      }
+      return labels;
+    }
+    get disabled() {
+      console.warn("This browser does not support the [disabled] attribute for trix-editor elements.");
+      return false;
+    }
+    set disabled(value) {
+      console.warn("This browser does not support the [disabled] attribute for trix-editor elements.");
+    }
+    get required() {
+      console.warn("This browser does not support the [required] attribute for trix-editor elements.");
+      return false;
+    }
+    set required(value) {
+      console.warn("This browser does not support the [required] attribute for trix-editor elements.");
+    }
+    get validity() {
+      console.warn("This browser does not support the validity property for trix-editor elements.");
+      return null;
+    }
+    get validationMessage() {
+      console.warn("This browser does not support the validationMessage property for trix-editor elements.");
+      return "";
+    }
+    get willValidate() {
+      console.warn("This browser does not support the willValidate property for trix-editor elements.");
+      return false;
+    }
+    setFormValue(value) {}
+    checkValidity() {
+      console.warn("This browser does not support checkValidity() for trix-editor elements.");
+      return true;
+    }
+    reportValidity() {
+      console.warn("This browser does not support reportValidity() for trix-editor elements.");
+      return true;
+    }
+    setCustomValidity(validationMessage) {
+      console.warn("This browser does not support setCustomValidity(validationMessage) for trix-editor elements.");
+    }
+  }
+  var _delegate = /*#__PURE__*/new WeakMap();
+  class TrixEditorElement extends HTMLElement {
+    constructor() {
+      super();
+      _classPrivateFieldInitSpec(this, _delegate, {
+        writable: true,
+        value: void 0
+      });
+      _classPrivateFieldSet(this, _delegate, this.constructor.formAssociated ? new ElementInternalsDelegate(this) : new LegacyDelegate(this));
+    }
+
+    // Properties
+
+    get trixId() {
+      if (this.hasAttribute("trix-id")) {
+        return this.getAttribute("trix-id");
+      } else {
+        this.setAttribute("trix-id", ++id);
+        return this.trixId;
+      }
+    }
+    get labels() {
+      return _classPrivateFieldGet(this, _delegate).labels;
+    }
+    get disabled() {
+      return _classPrivateFieldGet(this, _delegate).disabled;
+    }
+    set disabled(value) {
+      _classPrivateFieldGet(this, _delegate).disabled = value;
+    }
+    get required() {
+      return _classPrivateFieldGet(this, _delegate).required;
+    }
+    set required(value) {
+      _classPrivateFieldGet(this, _delegate).required = value;
+    }
+    get validity() {
+      return _classPrivateFieldGet(this, _delegate).validity;
+    }
+    get validationMessage() {
+      return _classPrivateFieldGet(this, _delegate).validationMessage;
+    }
+    get willValidate() {
+      return _classPrivateFieldGet(this, _delegate).willValidate;
+    }
+    get type() {
+      return this.localName;
+    }
+    get toolbarElement() {
+      if (this.hasAttribute("toolbar")) {
+        var _this$ownerDocument;
+        return (_this$ownerDocument = this.ownerDocument) === null || _this$ownerDocument === void 0 ? void 0 : _this$ownerDocument.getElementById(this.getAttribute("toolbar"));
+      } else if (this.parentNode) {
+        const toolbarId = "trix-toolbar-".concat(this.trixId);
+        this.setAttribute("toolbar", toolbarId);
+        const element = makeElement("trix-toolbar", {
+          id: toolbarId
+        });
+        this.parentNode.insertBefore(element, this);
+        return element;
+      } else {
+        return undefined;
+      }
+    }
+    get form() {
+      var _this$inputElement;
+      return (_this$inputElement = this.inputElement) === null || _this$inputElement === void 0 ? void 0 : _this$inputElement.form;
+    }
+    get inputElement() {
+      if (this.hasAttribute("input")) {
+        var _this$ownerDocument2;
+        return (_this$ownerDocument2 = this.ownerDocument) === null || _this$ownerDocument2 === void 0 ? void 0 : _this$ownerDocument2.getElementById(this.getAttribute("input"));
+      } else if (this.parentNode) {
+        const inputId = "trix-input-".concat(this.trixId);
+        this.setAttribute("input", inputId);
+        const element = makeElement("input", {
+          type: "hidden",
+          id: inputId
+        });
+        this.parentNode.insertBefore(element, this.nextElementSibling);
+        return element;
+      } else {
+        return undefined;
+      }
+    }
+    get editor() {
+      var _this$editorControlle;
+      return (_this$editorControlle = this.editorController) === null || _this$editorControlle === void 0 ? void 0 : _this$editorControlle.editor;
+    }
+    get name() {
+      var _this$inputElement2;
+      return (_this$inputElement2 = this.inputElement) === null || _this$inputElement2 === void 0 ? void 0 : _this$inputElement2.name;
+    }
+    get value() {
+      var _this$inputElement3;
+      return (_this$inputElement3 = this.inputElement) === null || _this$inputElement3 === void 0 ? void 0 : _this$inputElement3.value;
+    }
+    set value(defaultValue) {
+      var _this$editor;
+      this.defaultValue = defaultValue;
+      (_this$editor = this.editor) === null || _this$editor === void 0 || _this$editor.loadHTML(this.defaultValue);
+    }
+
+    // Controller delegate methods
+
+    notify(message, data) {
+      if (this.editorController) {
+        return triggerEvent("trix-".concat(message), {
+          onElement: this,
+          attributes: data
+        });
+      }
+    }
+    setFormValue(value) {
+      if (this.inputElement) {
+        this.inputElement.value = value;
+        _classPrivateFieldGet(this, _delegate).setFormValue(value);
+      }
+    }
+
+    // Element lifecycle
+
+    connectedCallback() {
+      if (!this.hasAttribute("data-trix-internal")) {
+        makeEditable(this);
+        addAccessibilityRole(this);
+        if (!this.editorController) {
+          triggerEvent("trix-before-initialize", {
+            onElement: this
+          });
+          this.editorController = new EditorController({
+            editorElement: this,
+            html: this.defaultValue = this.value
+          });
+          requestAnimationFrame(() => triggerEvent("trix-initialize", {
+            onElement: this
+          }));
+        }
+        this.editorController.registerSelectionManager();
+        _classPrivateFieldGet(this, _delegate).connectedCallback();
+        autofocus(this);
+      }
+    }
+    disconnectedCallback() {
+      var _this$editorControlle2;
+      (_this$editorControlle2 = this.editorController) === null || _this$editorControlle2 === void 0 || _this$editorControlle2.unregisterSelectionManager();
+      _classPrivateFieldGet(this, _delegate).disconnectedCallback();
+    }
+
+    // Form support
+
+    checkValidity() {
+      return _classPrivateFieldGet(this, _delegate).checkValidity();
+    }
+    reportValidity() {
+      return _classPrivateFieldGet(this, _delegate).reportValidity();
+    }
+    setCustomValidity(validationMessage) {
+      _classPrivateFieldGet(this, _delegate).setCustomValidity(validationMessage);
+    }
+    formDisabledCallback(disabled) {
+      if (this.inputElement) {
+        this.inputElement.disabled = disabled;
+      }
+      this.toggleAttribute("contenteditable", !disabled);
+    }
+    formResetCallback() {
+      this.reset();
+    }
+    reset() {
+      this.value = this.defaultValue;
+    }
+  }
+  _defineProperty(TrixEditorElement, "formAssociated", "ElementInternals" in window);
+
+  var elements = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    TrixEditorElement: TrixEditorElement,
+    TrixToolbarElement: TrixToolbarElement
+  });
+
+  var filters = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    Filter: Filter,
+    attachmentGalleryFilter: attachmentGalleryFilter
+  });
+
+  const Trix = {
+    VERSION: version,
+    config,
+    core,
+    models,
+    views,
+    controllers,
+    observers,
+    operations,
+    elements,
+    filters
+  };
+
+  // Expose models under the Trix constant for compatibility with v1
+  Object.assign(Trix, models);
+  function start() {
+    if (!customElements.get("trix-toolbar")) {
+      customElements.define("trix-toolbar", TrixToolbarElement);
+    }
+    if (!customElements.get("trix-editor")) {
+      customElements.define("trix-editor", TrixEditorElement);
+    }
+  }
+  window.Trix = Trix;
+  setTimeout(start, 0);
+
+  return Trix;
+
+}));
diff --git a/backend/public/assets/trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js.gz b/backend/public/assets/trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js.gz
new file mode 100644
index 0000000..5784aa8
Binary files /dev/null and b/backend/public/assets/trix-488ac88b50edee8aab73dd826e9967075eed9000a13fd13cbcc17745f86650cc.js.gz differ
diff --git a/backend/public/assets/trix-4c7f56767699ae6c08f21004c9dc23a1b76b0734b0fca61d4534900ee0fef211.css b/backend/public/assets/trix-4c7f56767699ae6c08f21004c9dc23a1b76b0734b0fca61d4534900ee0fef211.css
new file mode 100644
index 0000000..b07d206
--- /dev/null
+++ b/backend/public/assets/trix-4c7f56767699ae6c08f21004c9dc23a1b76b0734b0fca61d4534900ee0fef211.css
@@ -0,0 +1,412 @@
+trix-editor {
+  border: 1px solid #bbb;
+  border-radius: 3px;
+  margin: 0;
+  padding: 0.4em 0.6em;
+  min-height: 5em;
+  outline: none; }
+
+trix-toolbar * {
+  box-sizing: border-box; }
+
+trix-toolbar .trix-button-row {
+  display: flex;
+  flex-wrap: nowrap;
+  justify-content: space-between;
+  overflow-x: auto; }
+
+trix-toolbar .trix-button-group {
+  display: flex;
+  margin-bottom: 10px;
+  border: 1px solid #bbb;
+  border-top-color: #ccc;
+  border-bottom-color: #888;
+  border-radius: 3px; }
+  trix-toolbar .trix-button-group:not(:first-child) {
+    margin-left: 1.5vw; }
+    @media (max-width: 768px) {
+      trix-toolbar .trix-button-group:not(:first-child) {
+        margin-left: 0; } }
+
+trix-toolbar .trix-button-group-spacer {
+  flex-grow: 1; }
+  @media (max-width: 768px) {
+    trix-toolbar .trix-button-group-spacer {
+      display: none; } }
+
+trix-toolbar .trix-button {
+  position: relative;
+  float: left;
+  color: rgba(0, 0, 0, 0.6);
+  font-size: 0.75em;
+  font-weight: 600;
+  white-space: nowrap;
+  padding: 0 0.5em;
+  margin: 0;
+  outline: none;
+  border: none;
+  border-bottom: 1px solid #ddd;
+  border-radius: 0;
+  background: transparent; }
+  trix-toolbar .trix-button:not(:first-child) {
+    border-left: 1px solid #ccc; }
+  trix-toolbar .trix-button.trix-active {
+    background: #cbeefa;
+    color: black; }
+  trix-toolbar .trix-button:not(:disabled) {
+    cursor: pointer; }
+  trix-toolbar .trix-button:disabled {
+    color: rgba(0, 0, 0, 0.125); }
+  @media (max-width: 768px) {
+    trix-toolbar .trix-button {
+      letter-spacing: -0.01em;
+      padding: 0 0.3em; } }
+
+trix-toolbar .trix-button--icon {
+  font-size: inherit;
+  width: 2.6em;
+  height: 1.6em;
+  max-width: calc(0.8em + 4vw);
+  text-indent: -9999px; }
+  @media (max-width: 768px) {
+    trix-toolbar .trix-button--icon {
+      height: 2em;
+      max-width: calc(0.8em + 3.5vw); } }
+  trix-toolbar .trix-button--icon::before {
+    display: inline-block;
+    position: absolute;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    opacity: 0.6;
+    content: "";
+    background-position: center;
+    background-repeat: no-repeat;
+    background-size: contain; }
+    @media (max-width: 768px) {
+      trix-toolbar .trix-button--icon::before {
+        right: 6%;
+        left: 6%; } }
+  trix-toolbar .trix-button--icon.trix-active::before {
+    opacity: 1; }
+  trix-toolbar .trix-button--icon:disabled::before {
+    opacity: 0.125; }
+
+trix-toolbar .trix-button--icon-attach::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20d%3D%22M10.5%2018V7.5c0-2.25%203-2.25%203%200V18c0%204.125-6%204.125-6%200V7.5c0-6.375%209-6.375%209%200V18%22%20stroke%3D%22%23000%22%20stroke-width%3D%222%22%20stroke-miterlimit%3D%2210%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%2F%3E%3C%2Fsvg%3E");
+  top: 8%;
+  bottom: 4%; }
+
+trix-toolbar .trix-button--icon-bold::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M6.522%2019.242a.5.5%200%200%201-.5-.5V5.35a.5.5%200%200%201%20.5-.5h5.783c1.347%200%202.46.345%203.24.982.783.64%201.216%201.562%201.216%202.683%200%201.13-.587%202.129-1.476%202.71a.35.35%200%200%200%20.049.613c1.259.56%202.101%201.742%202.101%203.22%200%201.282-.483%202.334-1.363%203.063-.876.726-2.132%201.12-3.66%201.12h-5.89ZM9.27%207.347v3.362h1.97c.766%200%201.347-.17%201.733-.464.38-.291.587-.716.587-1.27%200-.53-.183-.928-.513-1.198-.334-.273-.838-.43-1.505-.43H9.27Zm0%205.606v3.791h2.389c.832%200%201.448-.177%201.853-.497.399-.315.614-.786.614-1.423%200-.62-.22-1.077-.63-1.385-.418-.313-1.053-.486-1.905-.486H9.27Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-italic::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M9%205h6.5v2h-2.23l-2.31%2010H13v2H6v-2h2.461l2.306-10H9V5Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-link::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M18.948%205.258a4.337%204.337%200%200%200-6.108%200L11.217%206.87a.993.993%200%200%200%200%201.41c.392.39%201.027.39%201.418%200l1.623-1.613a2.323%202.323%200%200%201%203.271%200%202.29%202.29%200%200%201%200%203.251l-2.393%202.38a3.021%203.021%200%200%201-4.255%200l-.05-.049a1.007%201.007%200%200%200-1.418%200%20.993.993%200%200%200%200%201.41l.05.049a5.036%205.036%200%200%200%207.091%200l2.394-2.38a4.275%204.275%200%200%200%200-6.072Zm-13.683%2013.6a4.337%204.337%200%200%200%206.108%200l1.262-1.255a.993.993%200%200%200%200-1.41%201.007%201.007%200%200%200-1.418%200L9.954%2017.45a2.323%202.323%200%200%201-3.27%200%202.29%202.29%200%200%201%200-3.251l2.344-2.331a2.579%202.579%200%200%201%203.631%200c.392.39%201.027.39%201.419%200a.993.993%200%200%200%200-1.41%204.593%204.593%200%200%200-6.468%200l-2.345%202.33a4.275%204.275%200%200%200%200%206.072Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-strike::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M6%2014.986c.088%202.647%202.246%204.258%205.635%204.258%203.496%200%205.713-1.728%205.713-4.463%200-.275-.02-.536-.062-.781h-3.461c.398.293.573.654.573%201.123%200%201.035-1.074%201.787-2.646%201.787-1.563%200-2.773-.762-2.91-1.924H6ZM6.432%2010h3.763c-.632-.314-.914-.715-.914-1.273%200-1.045.977-1.739%202.432-1.739%201.475%200%202.52.723%202.617%201.914h2.764c-.05-2.548-2.11-4.238-5.39-4.238-3.145%200-5.392%201.719-5.392%204.316%200%20.363.04.703.12%201.02ZM4%2011a1%201%200%201%200%200%202h15a1%201%200%201%200%200-2H4Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-quote::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20d%3D%22M4.581%208.471c.44-.5%201.056-.834%201.758-.995C8.074%207.17%209.201%207.822%2010%208.752c1.354%201.578%201.33%203.555.394%205.277-.941%201.731-2.788%203.163-4.988%203.56a.622.622%200%200%201-.653-.317c-.113-.205-.121-.49.16-.764.294-.286.567-.566.791-.835.222-.266.413-.54.524-.815.113-.28.156-.597.026-.908-.128-.303-.39-.524-.72-.69a3.02%203.02%200%200%201-1.674-2.7c0-.905.283-1.59.72-2.088Zm9.419%200c.44-.5%201.055-.834%201.758-.995%201.734-.306%202.862.346%203.66%201.276%201.355%201.578%201.33%203.555.395%205.277-.941%201.731-2.789%203.163-4.988%203.56a.622.622%200%200%201-.653-.317c-.113-.205-.122-.49.16-.764.294-.286.567-.566.791-.835.222-.266.412-.54.523-.815.114-.28.157-.597.026-.908-.127-.303-.39-.524-.72-.69a3.02%203.02%200%200%201-1.672-2.701c0-.905.283-1.59.72-2.088Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-heading-1::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M21.5%207.5v-3h-12v3H14v13h3v-13h4.5ZM9%2013.5h3.5v-3h-10v3H6v7h3v-7Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-code::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M3.293%2011.293a1%201%200%200%200%200%201.414l4%204a1%201%200%201%200%201.414-1.414L5.414%2012l3.293-3.293a1%201%200%200%200-1.414-1.414l-4%204Zm13.414%205.414%204-4a1%201%200%200%200%200-1.414l-4-4a1%201%200%201%200-1.414%201.414L18.586%2012l-3.293%203.293a1%201%200%200%200%201.414%201.414Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-bullet-list::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M5%207.5a1.5%201.5%200%201%200%200-3%201.5%201.5%200%200%200%200%203ZM8%206a1%201%200%200%201%201-1h11a1%201%200%201%201%200%202H9a1%201%200%200%201-1-1Zm1%205a1%201%200%201%200%200%202h11a1%201%200%201%200%200-2H9Zm0%206a1%201%200%201%200%200%202h11a1%201%200%201%200%200-2H9Zm-2.5-5a1.5%201.5%200%201%201-3%200%201.5%201.5%200%200%201%203%200ZM5%2019.5a1.5%201.5%200%201%200%200-3%201.5%201.5%200%200%200%200%203Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-number-list::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M3%204h2v4H4V5H3V4Zm5%202a1%201%200%200%201%201-1h11a1%201%200%201%201%200%202H9a1%201%200%200%201-1-1Zm1%205a1%201%200%201%200%200%202h11a1%201%200%201%200%200-2H9Zm0%206a1%201%200%201%200%200%202h11a1%201%200%201%200%200-2H9Zm-3.5-7H6v1l-1.5%202H6v1H3v-1l1.667-2H3v-1h2.5ZM3%2017v-1h3v4H3v-1h2v-.5H4v-1h1V17H3Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-undo::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M3%2014a1%201%200%200%200%201%201h6a1%201%200%201%200%200-2H6.257c2.247-2.764%205.151-3.668%207.579-3.264%202.589.432%204.739%202.356%205.174%205.405a1%201%200%200%200%201.98-.283c-.564-3.95-3.415-6.526-6.825-7.095C11.084%207.25%207.63%208.377%205%2011.39V8a1%201%200%200%200-2%200v6Zm2-1Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-redo::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M21%2014a1%201%200%200%201-1%201h-6a1%201%200%201%201%200-2h3.743c-2.247-2.764-5.151-3.668-7.579-3.264-2.589.432-4.739%202.356-5.174%205.405a1%201%200%200%201-1.98-.283c.564-3.95%203.415-6.526%206.826-7.095%203.08-.513%206.534.614%209.164%203.626V8a1%201%200%201%201%202%200v6Zm-2-1Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-decrease-nesting-level::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M5%206a1%201%200%200%201%201-1h12a1%201%200%201%201%200%202H6a1%201%200%200%201-1-1Zm4%205a1%201%200%201%200%200%202h9a1%201%200%201%200%200-2H9Zm-3%206a1%201%200%201%200%200%202h12a1%201%200%201%200%200-2H6Zm-3.707-5.707a1%201%200%200%200%200%201.414l2%202a1%201%200%201%200%201.414-1.414L4.414%2012l1.293-1.293a1%201%200%200%200-1.414-1.414l-2%202Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-button--icon-increase-nesting-level::before {
+  background-image: url("data:image/svg+xml,%3Csvg%20width%3D%2224%22%20height%3D%2224%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20fill-rule%3D%22evenodd%22%20clip-rule%3D%22evenodd%22%20d%3D%22M5%206a1%201%200%200%201%201-1h12a1%201%200%201%201%200%202H6a1%201%200%200%201-1-1Zm4%205a1%201%200%201%200%200%202h9a1%201%200%201%200%200-2H9Zm-3%206a1%201%200%201%200%200%202h12a1%201%200%201%200%200-2H6Zm-2.293-2.293%202-2a1%201%200%200%200%200-1.414l-2-2a1%201%200%201%200-1.414%201.414L3.586%2012l-1.293%201.293a1%201%200%201%200%201.414%201.414Z%22%20fill%3D%22%23000%22%2F%3E%3C%2Fsvg%3E"); }
+
+trix-toolbar .trix-dialogs {
+  position: relative; }
+
+trix-toolbar .trix-dialog {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  font-size: 0.75em;
+  padding: 15px 10px;
+  background: #fff;
+  box-shadow: 0 0.3em 1em #ccc;
+  border-top: 2px solid #888;
+  border-radius: 5px;
+  z-index: 5; }
+
+trix-toolbar .trix-input--dialog {
+  font-size: inherit;
+  font-weight: normal;
+  padding: 0.5em 0.8em;
+  margin: 0 10px 0 0;
+  border-radius: 3px;
+  border: 1px solid #bbb;
+  background-color: #fff;
+  box-shadow: none;
+  outline: none;
+  -webkit-appearance: none;
+  -moz-appearance: none; }
+  trix-toolbar .trix-input--dialog.validate:invalid {
+    box-shadow: #F00 0px 0px 1.5px 1px; }
+
+trix-toolbar .trix-button--dialog {
+  font-size: inherit;
+  padding: 0.5em;
+  border-bottom: none; }
+
+trix-toolbar .trix-dialog--link {
+  max-width: 600px; }
+
+trix-toolbar .trix-dialog__link-fields {
+  display: flex;
+  align-items: baseline; }
+  trix-toolbar .trix-dialog__link-fields .trix-input {
+    flex: 1; }
+  trix-toolbar .trix-dialog__link-fields .trix-button-group {
+    flex: 0 0 content;
+    margin: 0; }
+
+trix-editor [data-trix-mutable]:not(.attachment__caption-editor) {
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none; }
+
+trix-editor [data-trix-mutable]::-moz-selection,
+trix-editor [data-trix-cursor-target]::-moz-selection, trix-editor [data-trix-mutable] ::-moz-selection {
+  background: none; }
+
+trix-editor [data-trix-mutable]::selection,
+trix-editor [data-trix-cursor-target]::selection, trix-editor [data-trix-mutable] ::selection {
+  background: none; }
+
+trix-editor .attachment__caption-editor:focus[data-trix-mutable]::-moz-selection {
+  background: highlight; }
+
+trix-editor .attachment__caption-editor:focus[data-trix-mutable]::selection {
+  background: highlight; }
+
+trix-editor [data-trix-mutable].attachment.attachment--file {
+  box-shadow: 0 0 0 2px highlight;
+  border-color: transparent; }
+
+trix-editor [data-trix-mutable].attachment img {
+  box-shadow: 0 0 0 2px highlight; }
+
+trix-editor .attachment {
+  position: relative; }
+  trix-editor .attachment:hover {
+    cursor: default; }
+
+trix-editor .attachment--preview .attachment__caption:hover {
+  cursor: text; }
+
+trix-editor .attachment__progress {
+  position: absolute;
+  z-index: 1;
+  height: 20px;
+  top: calc(50% - 10px);
+  left: 5%;
+  width: 90%;
+  opacity: 0.9;
+  transition: opacity 200ms ease-in; }
+  trix-editor .attachment__progress[value="100"] {
+    opacity: 0; }
+
+trix-editor .attachment__caption-editor {
+  display: inline-block;
+  width: 100%;
+  margin: 0;
+  padding: 0;
+  font-size: inherit;
+  font-family: inherit;
+  line-height: inherit;
+  color: inherit;
+  text-align: center;
+  vertical-align: top;
+  border: none;
+  outline: none;
+  -webkit-appearance: none;
+  -moz-appearance: none; }
+
+trix-editor .attachment__toolbar {
+  position: absolute;
+  z-index: 1;
+  top: -0.9em;
+  left: 0;
+  width: 100%;
+  text-align: center; }
+
+trix-editor .trix-button-group {
+  display: inline-flex; }
+
+trix-editor .trix-button {
+  position: relative;
+  float: left;
+  color: #666;
+  white-space: nowrap;
+  font-size: 80%;
+  padding: 0 0.8em;
+  margin: 0;
+  outline: none;
+  border: none;
+  border-radius: 0;
+  background: transparent; }
+  trix-editor .trix-button:not(:first-child) {
+    border-left: 1px solid #ccc; }
+  trix-editor .trix-button.trix-active {
+    background: #cbeefa; }
+  trix-editor .trix-button:not(:disabled) {
+    cursor: pointer; }
+
+trix-editor .trix-button--remove {
+  text-indent: -9999px;
+  display: inline-block;
+  padding: 0;
+  outline: none;
+  width: 1.8em;
+  height: 1.8em;
+  line-height: 1.8em;
+  border-radius: 50%;
+  background-color: #fff;
+  border: 2px solid highlight;
+  box-shadow: 1px 1px 6px rgba(0, 0, 0, 0.25); }
+  trix-editor .trix-button--remove::before {
+    display: inline-block;
+    position: absolute;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    opacity: 0.7;
+    content: "";
+    background-image: url("data:image/svg+xml,%3Csvg%20height%3D%2224%22%20width%3D%2224%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20d%3D%22M19%206.41%2017.59%205%2012%2010.59%206.41%205%205%206.41%2010.59%2012%205%2017.59%206.41%2019%2012%2013.41%2017.59%2019%2019%2017.59%2013.41%2012z%22%2F%3E%3Cpath%20d%3D%22M0%200h24v24H0z%22%20fill%3D%22none%22%2F%3E%3C%2Fsvg%3E");
+    background-position: center;
+    background-repeat: no-repeat;
+    background-size: 90%; }
+  trix-editor .trix-button--remove:hover {
+    border-color: #333; }
+    trix-editor .trix-button--remove:hover::before {
+      opacity: 1; }
+
+trix-editor .attachment__metadata-container {
+  position: relative; }
+
+trix-editor .attachment__metadata {
+  position: absolute;
+  left: 50%;
+  top: 2em;
+  transform: translate(-50%, 0);
+  max-width: 90%;
+  padding: 0.1em 0.6em;
+  font-size: 0.8em;
+  color: #fff;
+  background-color: rgba(0, 0, 0, 0.7);
+  border-radius: 3px; }
+  trix-editor .attachment__metadata .attachment__name {
+    display: inline-block;
+    max-width: 100%;
+    vertical-align: bottom;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap; }
+  trix-editor .attachment__metadata .attachment__size {
+    margin-left: 0.2em;
+    white-space: nowrap; }
+
+.trix-content {
+  line-height: 1.5;
+  overflow-wrap: break-word;
+  word-break: break-word; }
+  .trix-content * {
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0; }
+  .trix-content h1 {
+    font-size: 1.2em;
+    line-height: 1.2; }
+  .trix-content blockquote {
+    border: 0 solid #ccc;
+    border-left-width: 0.3em;
+    margin-left: 0.3em;
+    padding-left: 0.6em; }
+  .trix-content [dir=rtl] blockquote,
+  .trix-content blockquote[dir=rtl] {
+    border-width: 0;
+    border-right-width: 0.3em;
+    margin-right: 0.3em;
+    padding-right: 0.6em; }
+  .trix-content li {
+    margin-left: 1em; }
+  .trix-content [dir=rtl] li {
+    margin-right: 1em; }
+  .trix-content pre {
+    display: inline-block;
+    width: 100%;
+    vertical-align: top;
+    font-family: monospace;
+    font-size: 0.9em;
+    padding: 0.5em;
+    white-space: pre;
+    background-color: #eee;
+    overflow-x: auto; }
+  .trix-content img {
+    max-width: 100%;
+    height: auto; }
+  .trix-content .attachment {
+    display: inline-block;
+    position: relative;
+    max-width: 100%; }
+    .trix-content .attachment a {
+      color: inherit;
+      text-decoration: none; }
+      .trix-content .attachment a:hover, .trix-content .attachment a:visited:hover {
+        color: inherit; }
+  .trix-content .attachment__caption {
+    text-align: center; }
+    .trix-content .attachment__caption .attachment__name + .attachment__size::before {
+      content: ' \2022 '; }
+  .trix-content .attachment--preview {
+    width: 100%;
+    text-align: center; }
+    .trix-content .attachment--preview .attachment__caption {
+      color: #666;
+      font-size: 0.9em;
+      line-height: 1.2; }
+  .trix-content .attachment--file {
+    color: #333;
+    line-height: 1;
+    margin: 0 2px 2px 2px;
+    padding: 0.4em 1em;
+    border: 1px solid #bbb;
+    border-radius: 5px; }
+  .trix-content .attachment-gallery {
+    display: flex;
+    flex-wrap: wrap;
+    position: relative; }
+    .trix-content .attachment-gallery .attachment {
+      flex: 1 0 33%;
+      padding: 0 0.5em;
+      max-width: 33%; }
+    .trix-content .attachment-gallery.attachment-gallery--2 .attachment, .trix-content .attachment-gallery.attachment-gallery--4 .attachment {
+      flex-basis: 50%;
+      max-width: 50%; }
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