From 0c46cf28db7b371ba3e5948659b30d42a59e385c Mon Sep 17 00:00:00 2001
From: miteruzo <miteruzo@naver.com>
Date: Sun, 13 Jul 2025 02:46:13 +0900
Subject: [PATCH] #49

---
 frontend/package-lock.json                    |  48 +++++-
 frontend/package.json                         |   2 +
 frontend/src/App.tsx                          |   2 +-
 frontend/src/components/NicoViewer.tsx        | 127 ++++++++-------
 frontend/src/components/PostEditForm.tsx      |   7 +-
 frontend/src/components/TagDetailSidebar.tsx  |  18 +--
 frontend/src/components/TagSearch.tsx         |  40 ++---
 frontend/src/components/TagSearchBox.tsx      |  16 +-
 frontend/src/components/TagSidebar.tsx        |   5 +-
 frontend/src/components/TopNav.tsx            | 150 +++++++++---------
 frontend/src/components/common/TabGroup.tsx   |   4 +-
 .../src/components/users/InheritDialogue.tsx  |  10 +-
 .../src/components/users/UserCodeDialogue.tsx |  14 +-
 frontend/src/config.sample.ts                 |   2 +-
 frontend/src/consts.ts                        |  18 +--
 frontend/src/pages/posts/PostDetailPage.tsx   | 137 ++++++++--------
 frontend/src/pages/posts/PostListPage.tsx     |  23 +--
 frontend/src/pages/posts/PostNewPage.tsx      |  22 +--
 frontend/src/pages/tags/NicoTagListPage.tsx   |   5 +-
 frontend/src/pages/users/SettingPage.tsx      |   9 +-
 frontend/src/pages/wiki/WikiDetailPage.tsx    |  74 +++++----
 frontend/src/pages/wiki/WikiDiffPage.tsx      |   8 +-
 frontend/src/pages/wiki/WikiEditPage.tsx      | 100 ++++++------
 frontend/src/pages/wiki/WikiHistoryPage.tsx   |   9 +-
 frontend/src/pages/wiki/WikiNewPage.tsx       |  91 +++++------
 frontend/src/pages/wiki/WikiSearchPage.tsx    |  13 +-
 frontend/src/router.tsx                       |  10 +-
 frontend/src/types.ts                         |   5 +-
 frontend/tsconfig.app.json                    |   4 +-
 29 files changed, 513 insertions(+), 460 deletions(-)

diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index c230e92..79ed7ca 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -30,6 +30,8 @@
       "devDependencies": {
         "@eslint/js": "^9.25.0",
         "@types/axios": "^0.9.36",
+        "@types/markdown-it": "^14.1.2",
+        "@types/node": "^24.0.13",
         "@types/react": "^19.1.2",
         "@types/react-dom": "^19.1.2",
         "@types/react-router-dom": "^5.3.3",
@@ -1993,6 +1995,24 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/linkify-it": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@types/linkify-it/-/linkify-it-5.0.0.tgz",
+      "integrity": "sha512-sVDA58zAw4eWAffKOaQH5/5j3XeayukzDk+ewSsnv3p4yJEZHCCzMDiZM8e0OUrRvmpGZ85jf4yDHkHsgBNr9Q==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/markdown-it": {
+      "version": "14.1.2",
+      "resolved": "https://registry.npmjs.org/@types/markdown-it/-/markdown-it-14.1.2.tgz",
+      "integrity": "sha512-promo4eFwuiW+TfGxhi+0x3czqTYJkG8qB17ZUJiVF10Xm7NLVRSLUsfRTU/6h1e24VvRnXCx+hG7li58lkzog==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/linkify-it": "^5",
+        "@types/mdurl": "^2"
+      }
+    },
     "node_modules/@types/mdast": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/@types/mdast/-/mdast-4.0.4.tgz",
@@ -2002,16 +2022,34 @@
         "@types/unist": "*"
       }
     },
+    "node_modules/@types/mdurl": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@types/mdurl/-/mdurl-2.0.0.tgz",
+      "integrity": "sha512-RGdgjQUZba5p6QEFAVx2OGb8rQDL/cPRG7GiedRzMcJ1tYnUANBncjbSB1NRGwbvjcPeikRABz2nshyPk1bhWg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/ms": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/@types/ms/-/ms-2.1.0.tgz",
       "integrity": "sha512-GsCCIZDE/p3i96vtEqx+7dBUGXrc7zeSK3wwPHIaRThS+9OhWIXRqzs4d6k1SVU8g91DrNRWxWUGhp5KXQb2VA==",
       "license": "MIT"
     },
+    "node_modules/@types/node": {
+      "version": "24.0.13",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.0.13.tgz",
+      "integrity": "sha512-Qm9OYVOFHFYg3wJoTSrz80hoec5Lia/dPp84do3X7dZvLikQvM1YpmvTBEdIr/e+U8HTkFjLHLnl78K/qjf+jQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.8.0"
+      }
+    },
     "node_modules/@types/react": {
       "version": "19.1.4",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.1.4.tgz",
       "integrity": "sha512-EB1yiiYdvySuIITtD5lhW4yPyJ31RkJkkDw794LaQYrxCSaQV/47y5o1FMC4zF9ZyjUjzJMZwbovEnT5yHTW6g==",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "csstype": "^3.0.2"
@@ -2021,7 +2059,7 @@
       "version": "19.1.5",
       "resolved": "https://registry.npmjs.org/@types/react-dom/-/react-dom-19.1.5.tgz",
       "integrity": "sha512-CMCjrWucUBZvohgZxkjd6S9h0nZxXjzus6yDfUb+xLxYM7VvjKNH1tQrE9GWLql1XoOP4/Ds3bwFqShHUYraGg==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT",
       "peerDependencies": {
         "@types/react": "^19.0.0"
@@ -2882,6 +2920,7 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
       "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/debug": {
@@ -6289,6 +6328,13 @@
       "integrity": "sha512-ARDJmphmdvUk6Glw7y9DQ2bFkKBHwQHLi2lsaH6PPmz/Ka9sFOBsBluozhDltWmnv9u/cF6Rt87znRTPV+yp/A==",
       "license": "MIT"
     },
+    "node_modules/undici-types": {
+      "version": "7.8.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.8.0.tgz",
+      "integrity": "sha512-9UJ2xGDvQ43tYyVMpuHlsgApydB8ZKfVYTsLDhXkFL/6gfkp+U8xTGdh8pMJv1SpZna0zxG1DwsKZsreLbXBxw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/unified": {
       "version": "11.0.5",
       "resolved": "https://registry.npmjs.org/unified/-/unified-11.0.5.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index f808241..02d1c79 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -31,6 +31,8 @@
   "devDependencies": {
     "@eslint/js": "^9.25.0",
     "@types/axios": "^0.9.36",
+    "@types/markdown-it": "^14.1.2",
+    "@types/node": "^24.0.13",
     "@types/react": "^19.1.2",
     "@types/react-dom": "^19.1.2",
     "@types/react-router-dom": "^5.3.3",
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index b195c44..691fc67 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -56,7 +56,7 @@ export default () => {
       <>
 	<Router>
 	  <div className="flex flex-col h-screen w-screen">
-	    <TopNav user={user} setUser={setUser} />
+	    <TopNav user={user} />
 	    <div className="flex flex-1">
 	      <Routes>
 		<Route path="/" element={<Navigate to="/posts" replace />} />
diff --git a/frontend/src/components/NicoViewer.tsx b/frontend/src/components/NicoViewer.tsx
index ac4caec..71314f5 100644
--- a/frontend/src/components/NicoViewer.tsx
+++ b/frontend/src/components/NicoViewer.tsx
@@ -1,15 +1,17 @@
-import React, { useRef, useLayoutEffect, useEffect, useState, CSSProperties } from 'react'
-import { Link, useNavigate, useLocation } from 'react-router-dom'
+import { useRef, useLayoutEffect, useEffect, useState } from 'react'
 type Props = { id:      string,
-               width:   number,
-               height:  number,
-               style?:  CSSProperties }
+	       width:   number,
+	       height:  number,
+	       style?:  CSSProperties }
 
+import type { CSSProperties } from 'react'
 
-const NicoViewer: React.FC = (props: Props) => {
+
+export default (props: Props) => {
   const { id, width, height, style = { } } = props
 
   const iframeRef = useRef<HTMLIFrameElement> (null)
+
   const [screenWidth, setScreenWidth] = useState<CSSProperties['width']> ()
   const [screenHeight, setScreenHeight] = useState<CSSProperties['height']> ()
   const [landscape, setLandscape] = useState<boolean> (false)
@@ -18,97 +20,92 @@ const NicoViewer: React.FC = (props: Props) => {
   const src = `https://embed.nicovideo.jp/watch/${id}?persistence=1&oldScript=1&referer=&from=0&allowProgrammaticFullScreen=1`;
 
   const styleFullScreen: CSSProperties = fullScreen ? {
-    top: 0,
-    left: landscape ? 0 : '100%',
-    position: 'fixed',
-    width: screenWidth,
-    height: screenHeight,
-    zIndex: 2147483647,
-    maxWidth: 'none',
-    transformOrigin: '0% 0%',
-    transform: landscape ? 'none' : 'rotate(90deg)',
-    WebkitTransformOrigin: '0% 0%',
-    WebkitTransform: landscape ? 'none' : 'rotate(90deg)',
-  } : {};
+      top:  0,
+      left: landscape ? 0 : '100%',
+      position: 'fixed',
+      width: screenWidth,
+      height: screenHeight,
+      zIndex: 2147483647,
+      maxWidth: 'none',
+      transformOrigin: '0% 0%',
+      transform: landscape ? 'none' : 'rotate(90deg)',
+      WebkitTransformOrigin: '0% 0%',
+      WebkitTransform: landscape ? 'none' : 'rotate(90deg)' } : {};
 
   const margedStyle = {
-    border: 'none',
-    maxWidth: '100%',
-    ...style,
-    ...styleFullScreen,
-  };
+      border:   'none',
+      maxWidth: '100%',
+      ...style,
+      ...styleFullScreen }
 
-  useEffect(() => {
+  useEffect (() => {
     const onMessage = (event: MessageEvent<any>) => {
-      if (!iframeRef.current || event.source !== iframeRef.current.contentWindow) return;
-      if (event.data.eventName === 'enterProgrammaticFullScreen') {
-        setFullScreen(true);
-      } else if (event.data.eventName === 'exitProgrammaticFullScreen') {
-        setFullScreen(false);
-      }
-    };
+      if (!(iframeRef.current)
+	  || (event.source !== iframeRef.current.contentWindow))
+	return
+
+      if (event.data.eventName === 'enterProgrammaticFullScreen')
+	setFullScreen (true)
+      else if (event.data.eventName === 'exitProgrammaticFullScreen')
+	setFullScreen (false)
+    }
 
-    addEventListener('message', onMessage);
+    addEventListener ('message', onMessage)
 
-    return () => {
-      removeEventListener('message', onMessage);
-    };
-  }, []);
+    return () => removeEventListener ('message', onMessage)
+  }, [])
 
   useLayoutEffect(() => {
     if (!(fullScreen))
       return
 
-    const initialScrollX = window.scrollX
-    const initialScrollY = window.scrollY
+    const initialScrollX = scrollX
+    const initialScrollY = scrollY
     let timer: NodeJS.Timeout
     let ended = false
 
     const pollingResize = () => {
       if (ended)
-        return
+	return
 
-      const landscape = window.innerWidth >= window.innerHeight
-      const windowWidth = `${landscape ? window.innerWidth : window.innerHeight}px`
-      const windowHeight = `${landscape ? window.innerHeight : window.innerWidth}px`
+      const landscape = innerWidth >= innerHeight
+      const windowWidth = `${landscape ? innerWidth : innerHeight}px`
+      const windowHeight = `${landscape ? innerHeight : innerWidth}px`
 
-      setLandScape (Landscape)
+      setLandscape (landscape)
       setScreenWidth (windowWidth)
       setScreenHeight (windowHeight)
       timer = setTimeout (startPollingResize, 200)
     }
 
     const startPollingResize = () => {
-      if (window.requestAnimationFrame) {
-        window.requestAnimationFrame(pollingResize);
-      } else {
-        pollingResize();
-      }
+      if (requestAnimationFrame)
+	requestAnimationFrame (pollingResize)
+      else
+	pollingResize ()
     }
 
-    startPollingResize();
+    startPollingResize ()
 
     return () => {
-      clearTimeout(timer);
-      ended = true;
-      window.scrollTo(initialScrollX, initialScrollY);
-    };
-  }, [fullScreen]);
+      clearTimeout (timer)
+      ended = true
+      scrollTo (initialScrollX, initialScrollY)
+    }
+  }, [fullScreen])
 
-  useEffect(() => {
+  useEffect (() => {
     if (!(fullScreen))
       return
     scrollTo (0, 0)
   }, [screenWidth, screenHeight, fullScreen])
 
-  return <iframe ref={iframeRef}
-                 src={src}
-                 width={width}
-                 height={height}
-                 style={margedStyle}
-                 allowFullScreen
-                 allow="autoplay" />
+  return (
+      <iframe ref={iframeRef}
+	      src={src}
+	      width={width}
+	      height={height}
+	      style={margedStyle}
+	      allowFullScreen
+	      allow="autoplay" />)
 }
-
-
-export default NicoViewer
diff --git a/frontend/src/components/PostEditForm.tsx b/frontend/src/components/PostEditForm.tsx
index 2de0d7e..8d993ac 100644
--- a/frontend/src/components/PostEditForm.tsx
+++ b/frontend/src/components/PostEditForm.tsx
@@ -1,11 +1,11 @@
 import axios from 'axios'
-import React, { useEffect, useState } from 'react'
+import { useState } from 'react'
 
 import TextArea from '@/components/common/TextArea'
 import { Button } from '@/components/ui/button'
 import { API_BASE_URL } from '@/config'
 
-import type { Post, Tag } from '@/types'
+import type { Post } from '@/types'
 
 type Props = { post:	Post
 	       onSave:	(newPost: Post) => void }
@@ -19,9 +19,10 @@ export default ({ post, onSave }: Props) => {
 					    .join (' '))
 
   const handleSubmit = async () => {
-    const { data } = await axios.put (`${ API_BASE_URL }/posts/${ post.id }`, { title, tags },
+    const res = await axios.put (`${ API_BASE_URL }/posts/${ post.id }`, { title, tags },
 	{ headers: { 'Content-Type':     'multipart/form-data',
 		     'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } } )
+    const data = res.data as Post
     onSave ({ ...post,
 	      title:  data.title,
 	      tags:   data.tags } as Post)
diff --git a/frontend/src/components/TagDetailSidebar.tsx b/frontend/src/components/TagDetailSidebar.tsx
index a1d1222..31cdfb6 100644
--- a/frontend/src/components/TagDetailSidebar.tsx
+++ b/frontend/src/components/TagDetailSidebar.tsx
@@ -1,24 +1,22 @@
-import axios from 'axios'
-import React, { useEffect, useState } from 'react'
-import { Link, useParams } from 'react-router-dom'
+import { useEffect, useState } from 'react'
+import { Link } from 'react-router-dom'
 
 import TagSearch from '@/components/TagSearch'
 import SubsectionTitle from '@/components/common/SubsectionTitle'
 import SidebarComponent from '@/components/layout/SidebarComponent'
-import { API_BASE_URL } from '@/config'
 import { CATEGORIES } from '@/consts'
 
 import type { Category, Post, Tag } from '@/types'
 
-type TagByCategory = { [key: Category]: Tag[] }
+type TagByCategory = { [key in Category]: Tag[] }
 
 type Props = { post: Post | null }
 
 
 export default ({ post }: Props) => {
-  const [tags, setTags] = useState<TagByCategory> ({ })
+  const [tags, setTags] = useState({ } as TagByCategory)
 
-  const categoryNames: { [key: Category]: string } = {
+  const categoryNames: Partial<{ [key in Category]: string }> = {
       general:    '一般',
       deerjikist: 'ニジラー',
       nico:       'ニコニコタグ' }
@@ -28,15 +26,15 @@ export default ({ post }: Props) => {
       return
 
     const fetchTags = () => {
-      const tagsTmp: TagByCategory = { }
+      const tagsTmp = { } as TagByCategory
       for (const tag of post.tags)
         {
           if (!(tag.category in tagsTmp))
             tagsTmp[tag.category] = []
           tagsTmp[tag.category].push (tag)
         }
-      for (const cat of Object.keys (tagsTmp))
-        tagsTmp[cat].sort ((tagA, tagB) => tagA.name < tagB.name ? -1 : 1)
+      for (const cat of Object.keys (tagsTmp) as (keyof typeof tagsTmp)[])
+        tagsTmp[cat].sort ((tagA: Tag, tagB: Tag) => tagA.name < tagB.name ? -1 : 1)
       setTags (tagsTmp)
     }
 
diff --git a/frontend/src/components/TagSearch.tsx b/frontend/src/components/TagSearch.tsx
index fd5088e..31f100e 100644
--- a/frontend/src/components/TagSearch.tsx
+++ b/frontend/src/components/TagSearch.tsx
@@ -1,7 +1,9 @@
-import React, { useEffect, useState } from 'react'
 import axios from 'axios'
-import { Link, useNavigate, useLocation } from 'react-router-dom'
+import React, { useEffect, useState } from 'react'
+import { useNavigate, useLocation } from 'react-router-dom'
+
 import { API_BASE_URL } from '@/config'
+
 import TagSearchBox from './TagSearchBox'
 
 import type { Tag } from '@/types'
@@ -16,34 +18,34 @@ const TagSearch: React.FC = () => {
   const [activeIndex, setActiveIndex] = useState (-1)
   const [suggestionsVsbl, setSuggestionsVsbl] = useState (false)
 
-  const whenChanged = e => {
-    setSearch (e.target.value)
+  const whenChanged = async (ev: React.ChangeEvent<HTMLInputElement>) => {
+    setSearch (ev.target.value)
 
-    const q: string = e.target.value.split (' ').at (-1)
+    const q = ev.target.value.trim ().split (' ').at (-1)
     if (!(q))
       {
         setSuggestions ([])
         return
       }
-    void (axios.get (`${ API_BASE_URL }/tags/autocomplete`, { params: { q } })
-          .then (res => {
-        setSuggestions (res.data)
-        if (suggestions.length)
-          setSuggestionsVsbl (true)
-    }))
+
+    const res = await axios.get (`${ API_BASE_URL }/tags/autocomplete`, { params: { q } })
+    const data = res.data as Tag[]
+    setSuggestions (data)
+    if (suggestions.length)
+      setSuggestionsVsbl (true)
   }
 
-  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
-    switch (e.key)
+  const handleKeyDown = (ev: React.KeyboardEvent<HTMLInputElement>) => {
+    switch (ev.key)
     {
     case 'ArrowDown':
-      e.preventDefault ()
+      ev.preventDefault ()
       setActiveIndex (i => Math.min (i + 1, suggestions.length - 1))
       setSuggestionsVsbl (true)
       break
 
     case 'ArrowUp':
-      e.preventDefault ()
+      ev.preventDefault ()
       setActiveIndex (i => Math.max (i - 1, -1))
       setSuggestionsVsbl (true)
       break
@@ -51,17 +53,17 @@ const TagSearch: React.FC = () => {
     case 'Enter':
       if (activeIndex < 0)
         break
-      e.preventDefault ()
+      ev.preventDefault ()
       const selected = suggestions[activeIndex]
       selected && handleTagSelect (selected)
       break
 
     case 'Escape':
-      e.preventDefault ()
+      ev.preventDefault ()
       setSuggestionsVsbl (false)
       break
     }
-    if (e.key === 'Enter' && (!(suggestionsVsbl) || activeIndex < 0))
+    if (ev.key === 'Enter' && (!(suggestionsVsbl) || activeIndex < 0))
       {
         navigate (`/posts?${ (new URLSearchParams ({ tags: search })).toString () }`)
         setSuggestionsVsbl (false)
@@ -92,7 +94,7 @@ const TagSearch: React.FC = () => {
                onBlur={() => setSuggestionsVsbl (false)}
                onKeyDown={handleKeyDown}
                className="w-full px-3 py-2 border rounded border-gray-600 bg-gray-800 text-white" />
-        <TagSearchBox suggestions={suggestionsVsbl && suggestions.length && suggestions}
+        <TagSearchBox suggestions={suggestionsVsbl && suggestions.length ? suggestions : [] as Tag[]}
                       activeIndex={activeIndex}
                       onSelect={handleTagSelect} />
       </div>)
diff --git a/frontend/src/components/TagSearchBox.tsx b/frontend/src/components/TagSearchBox.tsx
index 0a20031..b57d002 100644
--- a/frontend/src/components/TagSearchBox.tsx
+++ b/frontend/src/components/TagSearchBox.tsx
@@ -1,7 +1,3 @@
-import React, { useEffect, useState } from 'react'
-import axios from 'axios'
-import { Link, useNavigate, useLocation } from 'react-router-dom'
-import { API_BASE_URL } from '@/config'
 import { cn } from '@/lib/utils'
 
 import type { Tag } from '@/types'
@@ -11,15 +7,10 @@ type Props = { suggestions: Tag[]
                onSelect:    (tag: Tag) => void }
 
 
-const TagSearchBox: React.FC = (props: Props) => {
-  const { suggestions, activeIndex, onSelect } = props
-
+export default ({ suggestions, activeIndex, onSelect }: Props) => {
   if (!(suggestions.length))
     return null
 
-  const navigate = useNavigate ()
-  const location = useLocation ()
-
   return (
       <ul className="absolute left-0 right-0 z-50 w-full bg-gray-800 border border-gray-600 rounded shadow">
         {suggestions.map ((tag, i) => (
@@ -31,10 +22,7 @@ const TagSearchBox: React.FC = (props: Props) => {
                 onMouseDown={() => onSelect (tag)}
             >
               {tag.name}
-              {<span className="ml-2 text-sm text-gray-400">{tag.count}</span>}
+              {<span className="ml-2 text-sm text-gray-400">{tag.postCount}</span>}
             </li>))}
       </ul>)
 }
-
-
-export default TagSearchBox
diff --git a/frontend/src/components/TagSidebar.tsx b/frontend/src/components/TagSidebar.tsx
index 2a6444e..3d4c470 100644
--- a/frontend/src/components/TagSidebar.tsx
+++ b/frontend/src/components/TagSidebar.tsx
@@ -1,7 +1,6 @@
 import axios from 'axios'
-import toCamel from 'camelcase-keys'
-import React, { useEffect, useState } from 'react'
-import { Link, useLocation, useNavigate, useParams } from 'react-router-dom'
+import { useEffect, useState } from 'react'
+import { Link, useLocation, useNavigate } from 'react-router-dom'
 
 import TagSearch from '@/components/TagSearch'
 import SectionTitle from '@/components/common/SectionTitle'
diff --git a/frontend/src/components/TopNav.tsx b/frontend/src/components/TopNav.tsx
index fde9bc1..bcd3ab2 100644
--- a/frontend/src/components/TopNav.tsx
+++ b/frontend/src/components/TopNav.tsx
@@ -1,7 +1,7 @@
 import axios from 'axios'
 import toCamel from 'camelcase-keys'
-import React, { useState, useEffect } from 'react'
-import { Link, useLocation, useNavigate, useParams } from 'react-router-dom'
+import { useState, useEffect } from 'react'
+import { Link, useLocation, useNavigate } from 'react-router-dom'
 
 import { Button } from '@/components/ui/button'
 import { API_BASE_URL } from '@/config'
@@ -10,34 +10,34 @@ import { cn } from '@/lib/utils'
 
 import type { Tag, User, WikiPage } from '@/types'
 
-type Props = { user:	User | null
-	       setUser: (user: User) => void }
+type Props = { user: User | null }
 
-const enum Menu { None,
-		  Post,
-		  User,
-		  Tag,
-		  Wiki }
+const Menu = { None:  'None',
+	       Post:  'Post',
+	       User:  'User',
+	       Tag:   'Tag',
+	       Wiki:  'Wiki' } as const
 
+type Menu = typeof Menu[keyof typeof Menu]
 
-export default ({ user, setUser }: Props) => {
+
+export default ({ user }: Props) => {
   const location = useLocation ()
   const navigate = useNavigate ()
 
   const [selectedMenu, setSelectedMenu] = useState<Menu> (Menu.None)
   const [wikiId, setWikiId] = useState<number | null> (WikiIdBus.get ())
-  const [wikiSearch, setWikiSearch] = useState ('')
-  const [activeIndex, setActiveIndex] = useState (-1)
-  const [suggestions, setSuggestions] = useState<WikiPage[]> ([])
-  const [suggestionsVsbl, setSuggestionsVsbl] = useState (false)
-  const [tagSearch, setTagSearch] = useState ('')
-  const [userSearch, setUserSearch] = useState ('')
+  // const [wikiSearch, setWikiSearch] = useState ('')
+  // const [activeIndex, setActiveIndex] = useState (-1)
+  // const [suggestions, setSuggestions] = useState<WikiPage[]> ([])
+  // const [suggestionsVsbl, setSuggestionsVsbl] = useState (false)
+  // const [tagSearch, setTagSearch] = useState ('')
+  // const [userSearch, setUserSearch] = useState ('')
   const [postCount, setPostCount] = useState<number | null> (null)
 
-  const MyLink = ({ to, title, menu, base }: { to:    string
-					       title: string
-					       menu?: Menu
-					       base?: string }) => (
+  const MyLink = ({ to, title, base }: { to:    string
+					 title: string
+					 base?: string }) => (
       <Link to={to} className={cn ('hover:text-orange-500 h-full flex items-center',
 				   (location.pathname.startsWith (base ?? to)
 				    ? 'bg-gray-700 px-4 font-bold'
@@ -45,55 +45,55 @@ export default ({ user, setUser }: Props) => {
 	{title}
       </Link>)
 
-  const whenTagSearchChanged = ev => {
-    // TODO: 実装
-
-    setTagSearch (ev.target.value)
-
-    const q: string = ev.target.value.split (' ').at (-1)
-    if (!(q))
-      {
-	setSuggestions ([])
-	return
-      }
-  }
-
-  const whenWikiSearchChanged = ev => {
-    // TODO: 実装
-
-    setWikiSearch (ev.target.value)
-
-    const q: string = ev.target.value.split (' ').at (-1)
-    if (!(q))
-      {
-	setSuggestions ([])
-	return
-      }
-  }
-
-  const whenUserSearchChanged = ev => {
-    // TODO: 実装
-
-    setUserSearch (ev.target.value)
-
-    const q: string = ev.target.value.split (' ').at (-1)
-    if (!(q))
-      {
-	setSuggestions ([])
-	return
-      }
-  }
-
-  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
-    if (e.key === 'Enter' && wikiSearch.length && (!(suggestionsVsbl) || activeIndex < 0))
-      {
-	navigate (`/wiki/${ encodeURIComponent (wikiSearch) }`)
-	setSuggestionsVsbl (false)
-      }
-  }
-
-  const handleTagSelect = (tag: Tag) => {
-  }
+//  const whenTagSearchChanged = (ev: React.ChangeEvent<HTMLInputElement>) => {
+//    // TODO: 実装
+//
+//    setTagSearch (ev.target.value)
+//
+//    const q: string = ev.target.value.split (' ').at (-1)
+//    if (!(q))
+//      {
+//	// setSuggestions ([])
+//	return
+//      }
+//  }
+
+//  const whenWikiSearchChanged = (ev: React.ChangeEvent<HTMLInputElement>) => {
+//    // TODO: 実装
+//
+//    setWikiSearch (ev.target.value)
+//
+//    const q: string = ev.target.value.split (' ').at (-1)
+//    if (!(q))
+//      {
+//	// setSuggestions ([])
+//	return
+//      }
+//  }
+
+//  const whenUserSearchChanged = (ev: React.ChangeEvent<HTMLInputElement>) => {
+//    // TODO: 実装
+//
+//    setUserSearch (ev.target.value)
+//
+//    const q: string = ev.target.value.split (' ').at (-1)
+//    if (!(q))
+//      {
+//	// setSuggestions ([])
+//	return
+//      }
+//  }
+
+//  const handleKeyDown = (ev: React.KeyboardEvent<HTMLInputElement>) => {
+//     if (ev.key === 'Enter' && wikiSearch.length && (!(suggestionsVsbl) || activeIndex < 0))
+//       {
+//	navigate (`/wiki/${ encodeURIComponent (wikiSearch) }`)
+//	setSuggestionsVsbl (false)
+//       }
+//  }
+
+//  const handleTagSelect = (tag: Tag) => {
+//  }
 
   useEffect (() => {
     const unsubscribe = WikiIdBus.subscribe (setWikiId)
@@ -120,11 +120,13 @@ export default ({ user, setUser }: Props) => {
     void (async () => {
       try
       {
-	const { data: pageData } = await axios.get (`${ API_BASE_URL }/wiki/${ wikiId }`)
-	const wikiPage: WikiPage = toCamel (pageData, { deep: true })
+	const pageRes = await axios.get (`${ API_BASE_URL }/wiki/${ wikiId }`)
+	const pageData: any = pageRes.data
+	const wikiPage = toCamel (pageData, { deep: true }) as WikiPage
 
-	const { data: tagData } = await axios.get (`${ API_BASE_URL }/tags/name/${ wikiPage.title }`)
-	const tag: Tag = toCamel (tagData, { deep: true })
+	const tagRes = await axios.get (`${ API_BASE_URL }/tags/name/${ wikiPage.title }`)
+	const tagData: any = tagRes.data
+	const tag = toCamel (tagData, { deep: true }) as Tag
 
 	setPostCount (tag.postCount)
       }
@@ -156,7 +158,7 @@ export default ({ user, setUser }: Props) => {
 	{(() => {
 	  const className = 'bg-gray-700 text-white px-3 flex items-center w-full min-h-[40px]'
 	  const subClass = 'hover:text-orange-500 h-full flex items-center px-3'
-	  const inputBox = 'flex items-center px-3 mx-2'
+	  // const inputBox = 'flex items-center px-3 mx-2'
 	  const Separator = () => <span className="flex items-center px-2">|</span>
 	  switch (selectedMenu)
 	  {
diff --git a/frontend/src/components/common/TabGroup.tsx b/frontend/src/components/common/TabGroup.tsx
index 45f669a..4444b23 100644
--- a/frontend/src/components/common/TabGroup.tsx
+++ b/frontend/src/components/common/TabGroup.tsx
@@ -5,13 +5,13 @@ type TabProps = { name:     string
                   init?:    boolean
                   children: React.ReactNode }
 
-type Props = { children: React.ReactElement<TabProps>[] }
+type Props = { children: React.ReactNode }
 
 export const Tab = ({ children }: TabProps) => <>{children}</>
 
 
 export default ({ children }: Props) => {
-  const tabs = React.Children.toArray (children)
+  const tabs = React.Children.toArray (children) as React.ReactElement<TabProps>[]
 
   const [current, setCurrent] = useState<number> (() => {
     const i = tabs.findIndex (tab => tab.props.init)
diff --git a/frontend/src/components/users/InheritDialogue.tsx b/frontend/src/components/users/InheritDialogue.tsx
index 064123e..c266fb8 100644
--- a/frontend/src/components/users/InheritDialogue.tsx
+++ b/frontend/src/components/users/InheritDialogue.tsx
@@ -5,9 +5,7 @@ import { useState } from 'react'
 import { Button } from '@/components/ui/button'
 import { Dialog,
          DialogContent,
-         DialogDescription,
-         DialogTitle,
-         DialogTrigger } from '@/components/ui/dialog'
+         DialogTitle } from '@/components/ui/dialog'
 import { Input } from '@/components/ui/input'
 import { toast } from '@/components/ui/use-toast'
 import { API_BASE_URL } from '@/config'
@@ -16,11 +14,10 @@ import type { User } from '@/types'
 
 type Props = { visible:         boolean
 	       onVisibleChange: (visible: boolean) => void
-	       user:            User | null,
 	       setUser:         (user: User) => void }
 
 
-export default ({ visible, onVisibleChange, user, setUser }: Props) => {
+export default ({ visible, onVisibleChange, setUser }: Props) => {
   const [inputCode, setInputCode] = useState ('')
 
   const handleTransfer = async () => {
@@ -29,7 +26,8 @@ export default ({ visible, onVisibleChange, user, setUser }: Props) => {
 
     try
     {
-      const { data } = await axios.post (`${ API_BASE_URL }/users/verify`, { code: inputCode })
+      const res = await axios.post (`${ API_BASE_URL }/users/verify`, { code: inputCode })
+      const data = res.data as { valid: boolean; user: any }
       if (data.valid)
 	{
 	  localStorage.setItem ('user_code', inputCode)
diff --git a/frontend/src/components/users/UserCodeDialogue.tsx b/frontend/src/components/users/UserCodeDialogue.tsx
index 084366c..3dddf5a 100644
--- a/frontend/src/components/users/UserCodeDialogue.tsx
+++ b/frontend/src/components/users/UserCodeDialogue.tsx
@@ -3,9 +3,7 @@ import axios from 'axios'
 import { Button } from '@/components/ui/button'
 import { Dialog,
          DialogContent,
-         DialogDescription,
-         DialogTitle,
-         DialogTrigger } from '@/components/ui/dialog'
+         DialogTitle } from '@/components/ui/dialog'
 import { toast } from '@/components/ui/use-toast'
 import { API_BASE_URL } from '@/config'
 
@@ -14,21 +12,25 @@ import type { User } from '@/types'
 type Props = { visible:         boolean
 	       onVisibleChange: (visible: boolean) => void
 	       user:            User | null
-	       setUser:         (user: User) => void }
+	       setUser:         React.Dispatch<React.SetStateAction<User | null>> }
 
 
 export default ({ visible, onVisibleChange, user, setUser }: Props) => {
   const handleChange = async () => {
+    if (!(user))
+      return
+
     if (!(confirm ('引継ぎコードを再発行しますか?\n再発行するとほかのブラウザからはログアウトされます．')))
       return
 
-    const { data } = await axios.post (`${ API_BASE_URL }/users/code/renew`, { }, { headers: {
+    const res = await axios.post (`${ API_BASE_URL }/users/code/renew`, { }, { headers: {
 	'Content-Type':     'multipart/form-data',
 	'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } })
+    const data = res.data as { code: string }
     if (data.code)
       {
 	localStorage.setItem ('user_code', data.code)
-	setUser (user => ({ ...user, inheritanceCode: data.code }))
+	setUser (user => ({ ...user, inheritanceCode: data.code } as User))
 	toast ({ title: '再発行しました．' })
       }
   }
diff --git a/frontend/src/config.sample.ts b/frontend/src/config.sample.ts
index 91ac157..620811c 100644
--- a/frontend/src/config.sample.ts
+++ b/frontend/src/config.sample.ts
@@ -1,5 +1,5 @@
 // frontend/src/config.ts
-const ENV = 'development'
+const ENV: string = 'development'
 
 const config = {
   API_BASE_URL: ENV === 'production' ? 'https://hub.nizika.monster/api' : 'http://localhost:3002',
diff --git a/frontend/src/consts.ts b/frontend/src/consts.ts
index 4b06061..2016f73 100644
--- a/frontend/src/consts.ts
+++ b/frontend/src/consts.ts
@@ -1,13 +1,13 @@
 export const CATEGORIES = ['general',
-                           'character',
-                           'deerjikist',
-                           'meme',
-                           'material',
-                           'nico',
-                           'meta'] as const
+			   'character',
+			   'deerjikist',
+			   'meme',
+			   'material',
+			   'meta',
+			   'nico'] as const
 
 export const USER_ROLES = ['admin', 'member', 'guest'] as const
 
-export const enum ViewFlagBehavior { OnShowedDetail = 1,
-				     OnClickedLink  = 2,
-				     NotAuto        = 3 }
+export const ViewFlagBehavior = { OnShowedDetail: 1,
+				  OnClickedLink:  2,
+				  NotAuto:        3 } as const
diff --git a/frontend/src/pages/posts/PostDetailPage.tsx b/frontend/src/pages/posts/PostDetailPage.tsx
index f22d9a2..86293e5 100644
--- a/frontend/src/pages/posts/PostDetailPage.tsx
+++ b/frontend/src/pages/posts/PostDetailPage.tsx
@@ -1,8 +1,8 @@
 import axios from 'axios'
 import toCamel from 'camelcase-keys'
-import React, { useEffect, useState } from 'react'
+import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { Link, useLocation, useParams } from 'react-router-dom'
+import { useParams } from 'react-router-dom'
 
 import TagDetailSidebar from '@/components/TagDetailSidebar'
 import NicoViewer from '@/components/NicoViewer'
@@ -14,7 +14,7 @@ import { toast } from '@/components/ui/use-toast'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
 import { cn } from '@/lib/utils'
 
-import type { Post, Tag, User } from '@/types'
+import type { Post, User } from '@/types'
 
 type Props = { user: User | null }
 
@@ -22,40 +22,44 @@ type Props = { user: User | null }
 export default ({ user }: Props) => {
   const { id } = useParams ()
 
-  const location = useLocation ()
-
   const [post, setPost] = useState<Post | null> (null)
   const [editing, setEditing] = useState (true)
 
-  const changeViewedFlg = () => {
-    if (post?.viewed)
-      {
-        void (axios.delete (
-                  `${ API_BASE_URL }/posts/${ id }/viewed`,
-                  { headers: { 'X-Transfer-Code': localStorage.getItem ('user_code') || '' } })
-              .then (() => setPost (post => ({ ...post, viewed: false })))
-              .catch (() => toast ({ title:        '失敗……',
-                                     description:  '通信に失敗しました……' })))
-      }
-    else
-      {
-        void (axios.post (
-                  `${ API_BASE_URL }/posts/${ id }/viewed`,
-                  { },
-                  { headers: { 'X-Transfer-Code': localStorage.getItem ('user_code') || '' } })
-              .then (() => setPost (post => ({ ...post, viewed: true })))
-              .catch (() => toast ({ title:        '失敗……',
-                                     description:  '通信に失敗しました……' })))
-      }
+  const changeViewedFlg = async () => {
+    const url = `${ API_BASE_URL }/posts/${ id }/viewed`
+    const opt = { headers: { 'X-Transfer-Code': localStorage.getItem ('user_code') || '' } }
+    try
+    {
+      if (post!.viewed)
+	await axios.delete (url, opt)
+      else
+	await axios.post (url, { }, opt)
+
+      // 通信に成功したら “閲覧済” をトグル
+      setPost (post => ({ ...post!, viewed: !(post!.viewed) }))
+    }
+    catch
+    {
+      toast ({ title: '失敗……', description: '通信に失敗しました……' })
+    }
   }
 
   useEffect (() => {
     if (!(id))
       return
-    void (axios.get (`${ API_BASE_URL }/posts/${ id }`, { headers: {
-              'X-Transfer-Code': localStorage.getItem ('user_code') || '' } })
-          .then (res => setPost (toCamel (res.data, { deep: true })))
-          .catch (err => console.error ('うんち!', err)))
+
+    void (async () => {
+      try
+      {
+	const res = await axios.get (`${ API_BASE_URL }/posts/${ id }`, { headers: {
+	    'X-Transfer-Code': localStorage.getItem ('user_code') ?? '' } })
+	setPost (toCamel (res.data as any, { deep: true }) as Post)
+      }
+      catch (err)
+      {
+	console.error ('うんち!', err)
+      }
+    }) ()
   }, [id])
 
   useEffect (() => {
@@ -69,47 +73,46 @@ export default ({ user }: Props) => {
 
   const url = post ? new URL (post.url) : null
   const nicoFlg = url?.hostname.split ('.').slice (-2).join ('.') === 'nicovideo.jp'
-  const videoId = (nicoFlg
-                   ? url.pathname.match (/(?<=\/watch\/)[a-zA-Z0-9]+?(?=\/|$)/)[0]
-                   : '')
+  const match = nicoFlg ? url.pathname.match (/(?<=\/watch\/)[a-zA-Z0-9]+?(?=\/|$)/) : null
+  const videoId = match?.[0] ?? ''
   const viewedClass = (post?.viewed
-                       ? 'bg-blue-600 hover:bg-blue-700'
-                       : 'bg-gray-500 hover:bg-gray-600')
+		       ? 'bg-blue-600 hover:bg-blue-700'
+		       : 'bg-gray-500 hover:bg-gray-600')
 
   return (
       <>
-        <Helmet>
-          {(post?.thumbnail || post?.thumbnailBase) &&
-              <meta name="thumbnail" content={post.thumbnail || post.thumbnailBase} />}
-          {post && <title>{`${ post.title || post.url } | ${ SITE_TITLE }`}</title>}
-        </Helmet>
-        <TagDetailSidebar post={post} />
-        <MainArea>
-          {post
-           ? (
-              <>
-                {nicoFlg
-                 ? (
-                    <NicoViewer id={videoId}
-                                width="640"
-                                height="360" />)
-                 : <img src={post.thumbnail} alt={post.url} className="mb-4 w-full" />}
-                <Button onClick={changeViewedFlg}
-                        className={cn ('text-white', viewedClass)}>
-                  {post.viewed ? '閲覧済' : '未閲覧'}
-                </Button>
-                <TabGroup>
-                  {(['admin', 'member'].some (r => r === user?.role) && editing) && (
-                      <Tab name="編輯">
-                        <PostEditForm post={post}
-                                      onSave={newPost => {
-                                        setPost (newPost)
-                                        toast ({ description: '更新しました．' })
-                                      }} />
-                      </Tab>)}
-                </TabGroup>
-              </>)
-           : 'Loading...'}
-        </MainArea>
+	<Helmet>
+	  {(post?.thumbnail || post?.thumbnailBase) &&
+	      <meta name="thumbnail" content={post.thumbnail || post.thumbnailBase} />}
+	  {post && <title>{`${ post.title || post.url } | ${ SITE_TITLE }`}</title>}
+	</Helmet>
+	<TagDetailSidebar post={post} />
+	<MainArea>
+	  {post
+	   ? (
+	      <>
+		{nicoFlg
+		 ? (
+		    <NicoViewer id={videoId}
+				width={640}
+				height={360} />)
+		 : <img src={post.thumbnail} alt={post.url} className="mb-4 w-full" />}
+		<Button onClick={changeViewedFlg}
+			className={cn ('text-white', viewedClass)}>
+		  {post.viewed ? '閲覧済' : '未閲覧'}
+		</Button>
+		<TabGroup>
+		  {(['admin', 'member'].some (r => r === user?.role) && editing) && (
+		      <Tab name="編輯">
+			<PostEditForm post={post}
+				      onSave={newPost => {
+					setPost (newPost)
+					toast ({ description: '更新しました．' })
+				      }} />
+		      </Tab>)}
+		</TabGroup>
+	      </>)
+	   : 'Loading...'}
+	</MainArea>
       </>)
 }
diff --git a/frontend/src/pages/posts/PostListPage.tsx b/frontend/src/pages/posts/PostListPage.tsx
index fd4d184..c47d248 100644
--- a/frontend/src/pages/posts/PostListPage.tsx
+++ b/frontend/src/pages/posts/PostListPage.tsx
@@ -1,6 +1,6 @@
 import axios from 'axios'
 import toCamel from 'camelcase-keys'
-import React, { useEffect, useRef, useState } from 'react'
+import { useEffect, useRef, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
 import { Link, useLocation } from 'react-router-dom'
 
@@ -10,7 +10,7 @@ import TabGroup, { Tab } from '@/components/common/TabGroup'
 import MainArea from '@/components/layout/MainArea'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
 
-import type { Post, Tag, WikiPage } from '@/types'
+import type { Post, WikiPage } from '@/types'
 
 
 export default () => {
@@ -21,13 +21,14 @@ export default () => {
 
   const loaderRef = useRef<HTMLDivElement | null> (null)
 
-  const loadMore = async withCursor => {
+  const loadMore = async (withCursor: boolean) => {
     setLoading (true)
     const res = await axios.get (`${ API_BASE_URL }/posts`, {
 	params: { tags:   tags.join (' '),
 		  match:  (anyFlg ? 'any' : 'all'),
 		  ...(withCursor ? { cursor } : { }) } })
-    const data = toCamel (res.data, { deep: true })
+    const data = toCamel (res.data as any, { deep: true }) as { posts:      Post[]
+								nextCursor: string }
     setPosts (posts => [...(withCursor ? posts : []), ...data.posts])
     setCursor (data.nextCursor)
     setLoading (false)
@@ -48,7 +49,9 @@ export default () => {
     const target = loaderRef.current
     target && observer.observe (target)
 
-    return () => target && observer.unobserve (target)
+    return () => {
+      target && observer.unobserve (target)
+    }
   }, [loaderRef, loading])
 
   useEffect (() => {
@@ -62,8 +65,8 @@ export default () => {
 	  try
 	  {
 	    const tagName = tags[0]
-	    const { data } = await axios.get (`${ API_BASE_URL }/wiki/title/${ tagName }`)
-	    setWikiPage (toCamel (data, { deep: true }))
+	    const res = await axios.get (`${ API_BASE_URL }/wiki/title/${ tagName }`)
+	    setWikiPage (toCamel (res.data as any, { deep: true }) as WikiPage)
 	  }
 	  catch
 	  {
@@ -84,7 +87,7 @@ export default () => {
 	</Helmet>
 	<TagSidebar posts={posts.slice (0, 20)} />
 	<MainArea>
-	  <TabGroup key={wikiPage}>
+	  <TabGroup>
 	    <Tab name="広場">
 	      {posts.length
 	       ? (
@@ -93,9 +96,9 @@ export default () => {
 		      <Link to={`/posts/${ post.id }`}
 			    key={post.id}
 			    className="w-40 h-40 overflow-hidden rounded-lg shadow-md hover:shadow-lg">
-			<img src={post.thumbnail || post.thumbnailBase || null}
+			<img src={post.thumbnail || post.thumbnailBase || undefined}
 			     alt={post.title || post.url}
-			     title={post.title || post.url || null}
+			     title={post.title || post.url || undefined}
 			     className="object-none w-full h-full" />
 		      </Link>))}
 		  </div>)
diff --git a/frontend/src/pages/posts/PostNewPage.tsx b/frontend/src/pages/posts/PostNewPage.tsx
index 0b2ba1e..a6e67dc 100644
--- a/frontend/src/pages/posts/PostNewPage.tsx
+++ b/frontend/src/pages/posts/PostNewPage.tsx
@@ -1,9 +1,8 @@
 import axios from 'axios'
-import React, { useEffect, useState, useRef } from 'react'
+import { useEffect, useState, useRef } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { Link, useLocation, useParams, useNavigate } from 'react-router-dom'
+import { useNavigate } from 'react-router-dom'
 
-import NicoViewer from '@/components/NicoViewer'
 import Form from '@/components/common/Form'
 import Label from '@/components/common/Label'
 import PageTitle from '@/components/common/PageTitle'
@@ -12,16 +11,8 @@ import MainArea from '@/components/layout/MainArea'
 import { Button } from '@/components/ui/button'
 import { toast } from '@/components/ui/use-toast'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
-import { cn } from '@/lib/utils'
-
-import type { Post, Tag } from '@/types'
-
-type Props = { posts:	  Post[]
-	       setPosts:  (posts: Post[]) => void }
-
 
 export default () => {
-  const location = useLocation ()
   const navigate = useNavigate ()
 
   const [title, setTitle] = useState ('')
@@ -41,7 +32,8 @@ export default () => {
     formData.append ('title', title)
     formData.append ('url', url)
     formData.append ('tags', tags)
-    formData.append ('thumbnail', thumbnailFile)
+    if (thumbnailFile)
+      formData.append ('thumbnail', thumbnailFile)
 
     void (axios.post (`${ API_BASE_URL }/posts`, formData, { headers: {
 	      'Content-Type':	  'multipart/form-data',
@@ -78,9 +70,10 @@ export default () => {
   const fetchTitle = async () => {
     setTitle ('')
     setTitleLoading (true)
-    const { data } = await axios.get (`${ API_BASE_URL }/preview/title`, {
+    const res = await axios.get (`${ API_BASE_URL }/preview/title`, {
 	params:   { url },
 	headers:  { 'X-Transfer-Code': localStorage.getItem ('user_code') || '' } })
+    const data = res.data as { title: string }
     setTitle (data.title || '')
     setTitleLoading (false)
   }
@@ -91,10 +84,11 @@ export default () => {
     setThumbnailLoading (true)
     if (thumbnailPreview)
       URL.revokeObjectURL (thumbnailPreview)
-    const { data } = await axios.get (`${ API_BASE_URL }/preview/thumbnail`, {
+    const res = await axios.get (`${ API_BASE_URL }/preview/thumbnail`, {
 	params:       { url },
 	headers:      { 'X-Transfer-Code': localStorage.getItem ('user_code') || '' },
 	responseType: 'blob' })
+    const data = res.data as Blob
     const imageURL = URL.createObjectURL (data)
     setThumbnailPreview (imageURL)
     setThumbnailFile (new File ([data],
diff --git a/frontend/src/pages/tags/NicoTagListPage.tsx b/frontend/src/pages/tags/NicoTagListPage.tsx
index 44f2e46..72ac3dc 100644
--- a/frontend/src/pages/tags/NicoTagListPage.tsx
+++ b/frontend/src/pages/tags/NicoTagListPage.tsx
@@ -2,7 +2,6 @@ import axios from 'axios'
 import toCamel from 'camelcase-keys'
 import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { Link } from 'react-router-dom'
 
 import SectionTitle from '@/components/common/SectionTitle'
 import TextArea from '@/components/common/TextArea'
@@ -20,7 +19,7 @@ export default () => {
   useEffect (() => {
     void (async () => {
       const res = await axios.get (`${ API_BASE_URL }/tags/nico`)
-      const data = toCamel (res.data, { deep: true })
+      const data = toCamel (res.data as any, { deep: true }) as { tags: NicoTag[] }
 
       setNicoTags (data.tags)
 
@@ -67,7 +66,7 @@ export default () => {
 		       : rawTags[tag.id]}
 		    </td>
 		    <td>
-		      <a href="#" onClick={ev => {
+		      <a href="#" onClick={() => {
 			setEditing (editing => ({ ...editing, [tag.id]: !(editing[tag.id]) }))
 		      }}>
 			{editing[tag.id] ? <span className="text-red-400">更新</span> : '編輯'}
diff --git a/frontend/src/pages/users/SettingPage.tsx b/frontend/src/pages/users/SettingPage.tsx
index 7774694..5883113 100644
--- a/frontend/src/pages/users/SettingPage.tsx
+++ b/frontend/src/pages/users/SettingPage.tsx
@@ -1,5 +1,4 @@
 import axios from 'axios'
-import toCamel from 'camelcase-keys'
 import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
 
@@ -16,7 +15,7 @@ import { API_BASE_URL, SITE_TITLE } from '@/config'
 import type { User } from '@/types'
 
 type Props = { user:    User | null
-	       setUser: (user: User) => void }
+	       setUser: React.Dispatch<React.SetStateAction<User | null>> }
 
 
 export default ({ user, setUser }: Props) => {
@@ -33,9 +32,10 @@ export default ({ user, setUser }: Props) => {
 
     try
     {
-      const { data } = await axios.put (`${ API_BASE_URL }/users/${ user.id }`, formData, {
+      const res = await axios.put (`${ API_BASE_URL }/users/${ user.id }`, formData, {
 	  headers: { 'Content-Type':     'multipart/form-data',
 		     'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } })
+      const data = res.data as User
       setUser (user => ({ ...user, ...data }))
       toast ({ title: '設定を更新しました．' })
     }
@@ -49,7 +49,7 @@ export default ({ user, setUser }: Props) => {
     if (!user)
       return
 
-    setName (user.name)
+    setName (user.name ?? '')
   }, [user])
 
   return (
@@ -108,7 +108,6 @@ export default ({ user, setUser }: Props) => {
 
 	<InheritDialogue visible={inheritVsbl}
 			 onVisibleChange={setInheritVsbl}
-			 user={user}
 			 setUser={setUser} />
       </MainArea>)
 }
diff --git a/frontend/src/pages/wiki/WikiDetailPage.tsx b/frontend/src/pages/wiki/WikiDetailPage.tsx
index ae29823..8f0c261 100644
--- a/frontend/src/pages/wiki/WikiDetailPage.tsx
+++ b/frontend/src/pages/wiki/WikiDetailPage.tsx
@@ -14,7 +14,8 @@ import type { WikiPage } from '@/types'
 
 
 export default () => {
-  const { title } = useParams ()
+  const params = useParams ()
+  const title = params.title ?? ''
 
   const location = useLocation ()
   const navigate = useNavigate ()
@@ -27,45 +28,56 @@ export default () => {
   useEffect (() => {
     if (/^\d+$/.test (title))
       {
-        void (axios.get (`${ API_BASE_URL }/wiki/${ title }`)
-              .then (res => navigate (`/wiki/${ res.data.title }`, { replace: true })))
-        return
+	void (async () => {
+	  const res = await axios.get (`${ API_BASE_URL }/wiki/${ title }`)
+	  const data = res.data as WikiPage
+	  navigate (`/wiki/${ data.title }`, { replace: true })
+	}) ()
+	return
       }
 
-    void (axios.get (`${ API_BASE_URL }/wiki/title/${ encodeURIComponent (title) }`, version && { params: { version } })
-          .then (res => {
-            setWikiPage (toCamel (res.data, { deep: true }))
-            WikiIdBus.set (res.data.id)
-          })
-          .catch (() => setWikiPage (null)))
+    void (async () => {
+      try
+      {
+	const res = await axios.get (`${ API_BASE_URL }/wiki/title/${ encodeURIComponent (title) }`,
+				     { params: { ...(version ? { version } : { }) } })
+	const data = toCamel (res.data as any, { deep: true }) as WikiPage
+	setWikiPage (data)
+	WikiIdBus.set (data.id)
+      }
+      catch
+      {
+	setWikiPage (null)
+      }
+    }) ()
 
     return () => WikiIdBus.set (null)
   }, [title, location.search])
 
   return (
       <MainArea>
-        <Helmet>
-          <title>{`${ title } Wiki | ${ SITE_TITLE }`}</title>
-        </Helmet>
-        {(wikiPage && version) && (
-            <div className="text-sm flex gap-3 items-center justify-center border border-gray-700 rounded px-2 py-1 mb-4">
-              {wikiPage.pred ? (
-                  <Link to={`/wiki/${ title }?version=${ wikiPage.pred }`}>
-                    &lt; 古
-                  </Link>) : <>(最古)</>}
+	<Helmet>
+	  <title>{`${ title } Wiki | ${ SITE_TITLE }`}</title>
+	</Helmet>
+	{(wikiPage && version) && (
+	    <div className="text-sm flex gap-3 items-center justify-center border border-gray-700 rounded px-2 py-1 mb-4">
+	      {wikiPage.pred ? (
+		  <Link to={`/wiki/${ title }?version=${ wikiPage.pred }`}>
+		    &lt; 古
+		  </Link>) : <>(最古)</>}
 
-              <span>{wikiPage.updatedAt}</span>
+	      <span>{wikiPage.updatedAt}</span>
 
-              {wikiPage.succ ? (
-                  <Link to={`/wiki/${ title }?version=${ wikiPage.succ }`}>
-                    新 &gt;
-                  </Link>) : <>(最新)</>}
-            </div>)}
-        <PageTitle>{title}</PageTitle>
-        <div className="prose mx-auto p-4">
-          {wikiPage === undefined
-           ? 'Loading...'
-           : <WikiBody body={wikiPage?.body || `このページは存在しません。[新規作成してください](/wiki/new?title=${ title })。`} />}
-        </div>
+	      {wikiPage.succ ? (
+		  <Link to={`/wiki/${ title }?version=${ wikiPage.succ }`}>
+		    新 &gt;
+		  </Link>) : <>(最新)</>}
+	    </div>)}
+	<PageTitle>{title}</PageTitle>
+	<div className="prose mx-auto p-4">
+	  {wikiPage === undefined
+	   ? 'Loading...'
+	   : <WikiBody body={wikiPage?.body || `このページは存在しません。[新規作成してください](/wiki/new?title=${ title })。`} />}
+	</div>
       </MainArea>)
 }
diff --git a/frontend/src/pages/wiki/WikiDiffPage.tsx b/frontend/src/pages/wiki/WikiDiffPage.tsx
index 2099433..24bf9aa 100644
--- a/frontend/src/pages/wiki/WikiDiffPage.tsx
+++ b/frontend/src/pages/wiki/WikiDiffPage.tsx
@@ -2,7 +2,7 @@ import axios from 'axios'
 import toCamel from 'camelcase-keys'
 import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { Link, useLocation, useParams } from 'react-router-dom'
+import { useLocation, useParams } from 'react-router-dom'
 
 import PageTitle from '@/components/common/PageTitle'
 import MainArea from '@/components/layout/MainArea'
@@ -23,8 +23,10 @@ export default () => {
   const to = query.get ('to')
 
   useEffect (() => {
-    void (axios.get (`${ API_BASE_URL }/wiki/${ id }/diff`, { params: { from, to } })
-          .then (res => setDiff (toCamel (res.data, { deep: true }))))
+    void (async () => {
+      const res = await axios.get (`${ API_BASE_URL }/wiki/${ id }/diff`, { params: { from, to } })
+      setDiff (toCamel (res.data as any, { deep: true }) as WikiPageDiff)
+    }) ()
   }, [])
 
   return (
diff --git a/frontend/src/pages/wiki/WikiEditPage.tsx b/frontend/src/pages/wiki/WikiEditPage.tsx
index 6b5a9b8..01dd0ea 100644
--- a/frontend/src/pages/wiki/WikiEditPage.tsx
+++ b/frontend/src/pages/wiki/WikiEditPage.tsx
@@ -1,20 +1,17 @@
 import axios from 'axios'
 import MarkdownIt from 'markdown-it'
-import React, { useEffect, useState, useRef } from 'react'
+import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
 import MdEditor from 'react-markdown-editor-lite'
-import { Link, useLocation, useParams, useNavigate } from 'react-router-dom'
+import { useParams, useNavigate } from 'react-router-dom'
 
-import NicoViewer from '@/components/NicoViewer'
 import MainArea from '@/components/layout/MainArea'
-import { Button } from '@/components/ui/button'
 import { toast } from '@/components/ui/use-toast'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
-import { cn } from '@/lib/utils'
 
 import 'react-markdown-editor-lite/lib/index.css'
 
-import type { Tag } from '@/types'
+import type { WikiPage } from '@/types'
 
 const mdParser = new MarkdownIt
 
@@ -22,68 +19,71 @@ const mdParser = new MarkdownIt
 export default () => {
   const { id } = useParams ()
 
-  const location = useLocation ()
   const navigate = useNavigate ()
 
   const [title, setTitle] = useState ('')
   const [body, setBody] = useState ('')
 
-  const handleSubmit = () => {
+  const handleSubmit = async () => {
     const formData = new FormData ()
     formData.append ('title', title)
     formData.append ('body', body)
 
-    void (axios.put (`${ API_BASE_URL }/wiki/${ id }`, formData, { headers: {
-              'Content-Type':     'multipart/form-data',
-              'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } })
-          .then (res => {
-            toast ({ title: '投稿成功!' })
-            navigate (`/wiki/${ title }`)
-          })
-          .catch (e => toast ({ title:        '投稿失敗',
-                                description:  '入力を確認してください。' })))
+    try
+    {
+      await axios.put (`${ API_BASE_URL }/wiki/${ id }`, formData, { headers: {
+	  'Content-Type':     'multipart/form-data',
+	  'X-Transfer-Code':  localStorage.getItem ('user_code') ?? '' } })
+      toast ({ title: '投稿成功!' })
+      navigate (`/wiki/${ title }`)
+    }
+    catch
+    {
+      toast ({ title: '投稿失敗', description: '入力を確認してください。' })
+    }
   }
 
   useEffect (() => {
-    void (axios.get (`${ API_BASE_URL }/wiki/${ id }`)
-          .then (res => {
-            setTitle (res.data.title)
-            setBody (res.data.body)
-          }))
+    void (async () => {
+      const res = await axios.get (`${ API_BASE_URL }/wiki/${ id }`)
+      const data = res.data as WikiPage
+      setTitle (data.title)
+      setBody (data.body)
+    }) ()
   }, [id])
 
   return (
       <MainArea>
-        <Helmet>
-          <title>{`Wiki ページを編輯 | ${ SITE_TITLE }`}</title>
-        </Helmet>
-        <div className="max-w-xl mx-auto p-4 space-y-4">
-          <h1 className="text-2xl font-bold mb-2">Wiki ページを編輯</h1>
+	<Helmet>
+	  <title>{`Wiki ページを編輯 | ${ SITE_TITLE }`}</title>
+	</Helmet>
+	<div className="max-w-xl mx-auto p-4 space-y-4">
+	  <h1 className="text-2xl font-bold mb-2">Wiki ページを編輯</h1>
 
-          {/* タイトル */}
-          {/* TODO: タグ補完 */}
-          <div>
-            <label className="block font-semibold mb-1">タイトル</label>
-            <input type="text"
-                   value={title}
-                   onChange={e => setTitle (e.target.value)}
-                   className="w-full border p-2 rounded" />
-          </div>
+	  {/* タイトル */}
+	  {/* TODO: タグ補完 */}
+	  <div>
+	    <label className="block font-semibold mb-1">タイトル</label>
+	    <input type="text"
+		   value={title}
+		   onChange={e => setTitle (e.target.value)}
+		   className="w-full border p-2 rounded" />
+	  </div>
 
-          {/* 本文 */}
-          <div>
-            <label className="block font-semibold mb-1">本文</label>
-            <MdEditor value={body}
-                      style={{ height: '500px' }}
-                      renderHTML={text => mdParser.render (text)}
-                      onChange={({ text }) => setBody (text)} />
-          </div>
+	  {/* 本文 */}
+	  <div>
+	    <label className="block font-semibold mb-1">本文</label>
+	    <MdEditor value={body}
+		      style={{ height: '500px' }}
+		      renderHTML={text => mdParser.render (text)}
+		      onChange={({ text }) => setBody (text)} />
+	  </div>
 
-          {/* 送信 */}
-          <button onClick={handleSubmit}
-                  className="px-4 py-2 bg-blue-600 text-white rounded disabled:bg-gray-400">
-            追加
-          </button>
-        </div>
+	  {/* 送信 */}
+	  <button onClick={handleSubmit}
+		  className="px-4 py-2 bg-blue-600 text-white rounded disabled:bg-gray-400">
+	    追加
+	  </button>
+	</div>
       </MainArea>)
 }
diff --git a/frontend/src/pages/wiki/WikiHistoryPage.tsx b/frontend/src/pages/wiki/WikiHistoryPage.tsx
index fe9fac8..c90ad20 100644
--- a/frontend/src/pages/wiki/WikiHistoryPage.tsx
+++ b/frontend/src/pages/wiki/WikiHistoryPage.tsx
@@ -2,7 +2,7 @@ import axios from 'axios'
 import toCamel from 'camelcase-keys'
 import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { Link, useLocation, useParams } from 'react-router-dom'
+import { Link, useLocation } from 'react-router-dom'
 
 import MainArea from '@/components/layout/MainArea'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
@@ -18,8 +18,11 @@ export default () => {
   const id = query.get ('id')
 
   useEffect (() => {
-    void (axios.get (`${ API_BASE_URL }/wiki/changes`, id && { params: { id } })
-          .then (res => setChanges (toCamel (res.data, { deep: true }))))
+    void (async () => {
+      const res = await axios.get (`${ API_BASE_URL }/wiki/changes`,
+				   { params: { ...(id ? { id } : { }) } })
+      setChanges (toCamel (res.data as any, { deep: true }) as WikiPageChange[])
+    }) ()
   }, [location.search])
 
   return (
diff --git a/frontend/src/pages/wiki/WikiNewPage.tsx b/frontend/src/pages/wiki/WikiNewPage.tsx
index ffd3b0e..798beb4 100644
--- a/frontend/src/pages/wiki/WikiNewPage.tsx
+++ b/frontend/src/pages/wiki/WikiNewPage.tsx
@@ -1,20 +1,17 @@
 import axios from 'axios'
 import MarkdownIt from 'markdown-it'
-import React, { useEffect, useState, useRef } from 'react'
+import { useState } from 'react'
 import { Helmet } from 'react-helmet-async'
 import MdEditor from 'react-markdown-editor-lite'
-import { Link, useLocation, useParams, useNavigate } from 'react-router-dom'
+import { useLocation, useNavigate } from 'react-router-dom'
 
-import NicoViewer from '@/components/NicoViewer'
 import MainArea from '@/components/layout/MainArea'
-import { Button } from '@/components/ui/button'
 import { toast } from '@/components/ui/use-toast'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
-import { cn } from '@/lib/utils'
 
 import 'react-markdown-editor-lite/lib/index.css'
 
-import type { Tag } from '@/types'
+import type { WikiPage } from '@/types'
 
 const mdParser = new MarkdownIt
 
@@ -29,54 +26,58 @@ export default () => {
   const [title, setTitle] = useState (titleQuery)
   const [body, setBody] = useState ('')
 
-  const handleSubmit = () => {
-    const formData = new FormData ()
+  const handleSubmit = async () => {
+    const formData = new FormData
     formData.append ('title', title)
     formData.append ('body', body)
 
-    void (axios.post (`${ API_BASE_URL }/wiki`, formData, { headers: {
-              'Content-Type':     'multipart/form-data',
-              'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } })
-          .then (res => {
-            toast ({ title: '投稿成功!' })
-            navigate (`/wiki/${ res.data.title }`)
-          })
-          .catch (e => toast ({ title:        '投稿失敗',
-                                description:  '入力を確認してください。' })))
+    try
+    {
+      const res = await axios.post (`${ API_BASE_URL }/wiki`, formData, { headers: {
+	  'Content-Type':     'multipart/form-data',
+	  'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } })
+      const data = res.data as WikiPage
+      toast ({ title: '投稿成功!' })
+      navigate (`/wiki/${ data.title }`)
+    }
+    catch
+    {
+      toast ({ title: '投稿失敗', description: '入力を確認してください。' })
+    }
   }
 
   return (
       <MainArea>
-        <Helmet>
-          <title>{`新規 Wiki ページ | ${ SITE_TITLE }`}</title>
-        </Helmet>
-        <div className="max-w-xl mx-auto p-4 space-y-4">
-          <h1 className="text-2xl font-bold mb-2">新規 Wiki ページ</h1>
+	<Helmet>
+	  <title>{`新規 Wiki ページ | ${ SITE_TITLE }`}</title>
+	</Helmet>
+	<div className="max-w-xl mx-auto p-4 space-y-4">
+	  <h1 className="text-2xl font-bold mb-2">新規 Wiki ページ</h1>
 
-          {/* タイトル */}
-          {/* TODO: タグ補完 */}
-          <div>
-            <label className="block font-semibold mb-1">タイトル</label>
-            <input type="text"
-                   value={title}
-                   onChange={e => setTitle (e.target.value)}
-                   className="w-full border p-2 rounded" />
-          </div>
+	  {/* タイトル */}
+	  {/* TODO: タグ補完 */}
+	  <div>
+	    <label className="block font-semibold mb-1">タイトル</label>
+	    <input type="text"
+		   value={title}
+		   onChange={e => setTitle (e.target.value)}
+		   className="w-full border p-2 rounded" />
+	  </div>
 
-          {/* 本文 */}
-          <div>
-            <label className="block font-semibold mb-1">本文</label>
-            <MdEditor value={body}
-                      style={{ height: '500px' }}
-                      renderHTML={text => mdParser.render (text)}
-                      onChange={({ text }) => setBody (text)} />
-          </div>
+	  {/* 本文 */}
+	  <div>
+	    <label className="block font-semibold mb-1">本文</label>
+	    <MdEditor value={body}
+		      style={{ height: '500px' }}
+		      renderHTML={text => mdParser.render (text)}
+		      onChange={({ text }) => setBody (text)} />
+	  </div>
 
-          {/* 送信 */}
-          <button onClick={handleSubmit}
-                  className="px-4 py-2 bg-blue-600 text-white rounded disabled:bg-gray-400">
-            追加
-          </button>
-        </div>
+	  {/* 送信 */}
+	  <button onClick={handleSubmit}
+		  className="px-4 py-2 bg-blue-600 text-white rounded disabled:bg-gray-400">
+	    追加
+	  </button>
+	</div>
       </MainArea>)
 }
diff --git a/frontend/src/pages/wiki/WikiSearchPage.tsx b/frontend/src/pages/wiki/WikiSearchPage.tsx
index a529471..225815e 100644
--- a/frontend/src/pages/wiki/WikiSearchPage.tsx
+++ b/frontend/src/pages/wiki/WikiSearchPage.tsx
@@ -8,22 +8,21 @@ import SectionTitle from '@/components/common/SectionTitle'
 import MainArea from '@/components/layout/MainArea'
 import { API_BASE_URL, SITE_TITLE } from '@/config'
 
-import type { Category, WikiPage } from '@/types'
+import type { WikiPage } from '@/types'
 
 
 export default () => {
   const [title, setTitle] = useState ('')
   const [text, setText] = useState ('')
-  const [category, setCategory] = useState<Category | null> (null)
   const [results, setResults] = useState<WikiPage[]> ([])
 
-  const search = () => {
-    void (axios.get (`${ API_BASE_URL }/wiki/search`, { params: { title } })
-	  .then (res => setResults (toCamel (res.data, { deep: true }))))
+  const search = async () => {
+    const res = await axios.get (`${ API_BASE_URL }/wiki/search`, { params: { title } })
+    setResults (toCamel (res.data as any, { deep: true }) as WikiPage[])
   }
 
-  const handleSearch = (e: React.FormEvent) => {
-    e.preventDefault ()
+  const handleSearch = (ev: React.FormEvent) => {
+    ev.preventDefault ()
     search ()
   }
 
diff --git a/frontend/src/router.tsx b/frontend/src/router.tsx
index 5cec375..5f01ba1 100644
--- a/frontend/src/router.tsx
+++ b/frontend/src/router.tsx
@@ -1,5 +1,5 @@
-import { Route,
-	 createBrowserRouter,
-	 createRoutesFromElements } from 'react-router-dom'
-
-import App from '@/App'
+// import { Route,
+// 	 createBrowserRouter,
+// 	 createRoutesFromElements } from 'react-router-dom'
+// 
+// import App from '@/App'
diff --git a/frontend/src/types.ts b/frontend/src/types.ts
index 4f95c9f..9dd4cdd 100644
--- a/frontend/src/types.ts
+++ b/frontend/src/types.ts
@@ -1,4 +1,4 @@
-import { CATEGORIES, USER_ROLES } from '@/consts'
+import { CATEGORIES, USER_ROLES, ViewFlagBehavior } from '@/consts'
 
 export type Category = typeof CATEGORIES[number]
 
@@ -28,9 +28,12 @@ export type User = {
     inheritanceCode:  string
     role:             UserRole }
 
+export type ViewFlagBehavior = typeof ViewFlagBehavior[keyof typeof ViewFlagBehavior]
+
 export type WikiPage = {
     id:         number
     title:      string
+    body:       string
     sha:        string
     pred?:      string
     succ?:      string
diff --git a/frontend/tsconfig.app.json b/frontend/tsconfig.app.json
index 726680b..17e49c8 100644
--- a/frontend/tsconfig.app.json
+++ b/frontend/tsconfig.app.json
@@ -1,9 +1,9 @@
 {
   "compilerOptions": {
     "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
-    "target": "ES2020",
+    "target": "ES2022",
     "useDefineForClassFields": true,
-    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
     "module": "ESNext",
     "skipLibCheck": true,