├── src
    ├── react-app-env.d.ts
    ├── setupTests.ts
    ├── App.test.tsx
    ├── componens
    │   ├── Sidebar.tsx
    │   ├── Avatar.tsx
    │   ├── TodoList.tsx
    │   ├── AutoBatchEventHandler.tsx
    │   ├── TaskList.tsx
    │   ├── AlbumList.tsx
    │   ├── AutoBatchOther.tsx
    │   ├── ReactQuery.tsx
    │   └── Transition.tsx
    ├── index.css
    ├── reportWebVitals.ts
    ├── App.css
    ├── App.tsx
    ├── index.tsx
    └── logo.svg
├── public
    ├── robots.txt
    ├── favicon.ico
    ├── logo192.png
    ├── logo512.png
    ├── manifest.json
    └── index.html
├── .gitignore
├── tsconfig.json
├── README.md
└── package.json


/src/react-app-env.d.ts:
--------------------------------------------------------------------------------
1 | /// <reference types="react-scripts" />
2 | 


--------------------------------------------------------------------------------
/public/robots.txt:
--------------------------------------------------------------------------------
1 | # https://www.robotstxt.org/robotstxt.html
2 | User-agent: *
3 | Disallow:
4 | 


--------------------------------------------------------------------------------
/public/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reachscript-jak/react18-explanation-react18/HEAD/public/favicon.ico


--------------------------------------------------------------------------------
/public/logo192.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reachscript-jak/react18-explanation-react18/HEAD/public/logo192.png


--------------------------------------------------------------------------------
/public/logo512.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reachscript-jak/react18-explanation-react18/HEAD/public/logo512.png


--------------------------------------------------------------------------------
/src/setupTests.ts:
--------------------------------------------------------------------------------
1 | // jest-dom adds custom jest matchers for asserting on DOM nodes.
2 | // allows you to do things like:
3 | // expect(element).toHaveTextContent(/react/i)
4 | // learn more: https://github.com/testing-library/jest-dom
5 | import '@testing-library/jest-dom';
6 | 


--------------------------------------------------------------------------------
/src/App.test.tsx:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import { render, screen } from '@testing-library/react';
 3 | import App from './App';
 4 | 
 5 | test('renders learn react link', () => {
 6 |   render(<App />);
 7 |   const linkElement = screen.getByText(/learn react/i);
 8 |   expect(linkElement).toBeInTheDocument();
 9 | });
10 | 


--------------------------------------------------------------------------------
/src/componens/Sidebar.tsx:
--------------------------------------------------------------------------------
 1 | export const Sidebar = () => {
 2 |   return (
 3 |     <div style={{ width: '400px', border: '2px solid gray' }}>
 4 |       <a href="dummy">TOP</a>
 5 |       <br />
 6 |       <br />
 7 |       <a href="dummy">マイページ</a>
 8 |       <br />
 9 |       <br />
10 |       <a href="dummy">利用規約</a>
11 |     </div>
12 |   )
13 | }
14 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | /.pnp
 6 | .pnp.js
 7 | 
 8 | # testing
 9 | /coverage
10 | 
11 | # production
12 | /build
13 | 
14 | # misc
15 | .DS_Store
16 | .env.local
17 | .env.development.local
18 | .env.test.local
19 | .env.production.local
20 | 
21 | npm-debug.log*
22 | yarn-debug.log*
23 | yarn-error.log*
24 | 


--------------------------------------------------------------------------------
/src/index.css:
--------------------------------------------------------------------------------
 1 | body {
 2 |   margin: 0;
 3 |   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
 4 |     'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
 5 |     sans-serif;
 6 |   -webkit-font-smoothing: antialiased;
 7 |   -moz-osx-font-smoothing: grayscale;
 8 | }
 9 | 
10 | code {
11 |   font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
12 |     monospace;
13 | }
14 | 


--------------------------------------------------------------------------------
/src/reportWebVitals.ts:
--------------------------------------------------------------------------------
 1 | import { ReportHandler } from 'web-vitals';
 2 | 
 3 | const reportWebVitals = (onPerfEntry?: ReportHandler) => {
 4 |   if (onPerfEntry && onPerfEntry instanceof Function) {
 5 |     import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
 6 |       getCLS(onPerfEntry);
 7 |       getFID(onPerfEntry);
 8 |       getFCP(onPerfEntry);
 9 |       getLCP(onPerfEntry);
10 |       getTTFB(onPerfEntry);
11 |     });
12 |   }
13 | };
14 | 
15 | export default reportWebVitals;
16 | 


--------------------------------------------------------------------------------
/public/manifest.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "64x64 32x32 24x24 16x16",
 8 |       "type": "image/x-icon"
 9 |     },
10 |     {
11 |       "src": "logo192.png",
12 |       "type": "image/png",
13 |       "sizes": "192x192"
14 |     },
15 |     {
16 |       "src": "logo512.png",
17 |       "type": "image/png",
18 |       "sizes": "512x512"
19 |     }
20 |   ],
21 |   "start_url": ".",
22 |   "display": "standalone",
23 |   "theme_color": "#000000",
24 |   "background_color": "#ffffff"
25 | }
26 | 


--------------------------------------------------------------------------------
/src/componens/Avatar.tsx:
--------------------------------------------------------------------------------
 1 | import { ReactNode } from "react"
 2 | 
 3 | type Props = {
 4 |   children: ReactNode;
 5 |   isSelected?: boolean;
 6 |   onClick: (assignee: string) => void;
 7 | }
 8 | 
 9 | export const Avatar = ({ children, isSelected = false, onClick }: Props) => {
10 |   const border = isSelected ? '3px solid orange': '1px solid gray';
11 |   return (
12 |     <div style={{
13 |       width: '30px',
14 |       height: '30px',
15 |       border,
16 |       borderRadius: '50%',
17 |       textAlign: 'center',
18 |       lineHeight: '30px',
19 |       userSelect: 'none',
20 |     }} onClick={() => onClick(`${children}`)}>{children}</div>
21 |   )
22 | }
23 | 


--------------------------------------------------------------------------------
/tsconfig.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "compilerOptions": {
 3 |     "target": "es5",
 4 |     "lib": [
 5 |       "dom",
 6 |       "dom.iterable",
 7 |       "esnext"
 8 |     ],
 9 |     "allowJs": true,
10 |     "skipLibCheck": true,
11 |     "esModuleInterop": true,
12 |     "allowSyntheticDefaultImports": true,
13 |     "strict": true,
14 |     "forceConsistentCasingInFileNames": true,
15 |     "noFallthroughCasesInSwitch": true,
16 |     "module": "esnext",
17 |     "moduleResolution": "node",
18 |     "resolveJsonModule": true,
19 |     "isolatedModules": true,
20 |     "noEmit": true,
21 |     "jsx": "react-jsx"
22 |   },
23 |   "include": [
24 |     "src"
25 |   ]
26 | }
27 | 


--------------------------------------------------------------------------------
/src/App.css:
--------------------------------------------------------------------------------
 1 | .App {
 2 |   text-align: center;
 3 | }
 4 | 
 5 | .App-logo {
 6 |   height: 40vmin;
 7 |   pointer-events: none;
 8 | }
 9 | 
10 | @media (prefers-reduced-motion: no-preference) {
11 |   .App-logo {
12 |     animation: App-logo-spin infinite 20s linear;
13 |   }
14 | }
15 | 
16 | .App-header {
17 |   background-color: #282c34;
18 |   min-height: 100vh;
19 |   display: flex;
20 |   flex-direction: column;
21 |   align-items: center;
22 |   justify-content: center;
23 |   font-size: calc(10px + 2vmin);
24 |   color: white;
25 | }
26 | 
27 | .App-link {
28 |   color: #61dafb;
29 | }
30 | 
31 | @keyframes App-logo-spin {
32 |   from {
33 |     transform: rotate(0deg);
34 |   }
35 |   to {
36 |     transform: rotate(360deg);
37 |   }
38 | }
39 | 


--------------------------------------------------------------------------------
/src/componens/TodoList.tsx:
--------------------------------------------------------------------------------
 1 | import { useQuery } from "@tanstack/react-query";
 2 | import axios from "axios";
 3 | 
 4 | type Todo = {
 5 |   userId: number;
 6 |   id: number;
 7 |   title: string;
 8 |   completed: boolean;
 9 | }
10 | 
11 | const fetchTodos = async () => {
12 |   const result = await axios.get<Todo[]>('https://jsonplaceholder.typicode.com/todos');
13 |   return result.data;
14 | }
15 | 
16 | export const TodoList = () => {
17 |   const { data } = useQuery<Todo[]>(['todos'], fetchTodos);
18 | 
19 |   return (
20 |     <div style={{ height: '300px', border: '2px solid gray', background: 'mistyrose', overflowY: 'scroll' }}>
21 |       <h2>TODO</h2>
22 |       {data?.map((todo) => <p key={todo.id}>{todo.title}</p>)}
23 |     </div>
24 |   )
25 | }
26 | 


--------------------------------------------------------------------------------
/src/componens/AutoBatchEventHandler.tsx:
--------------------------------------------------------------------------------
 1 | import { useState } from "react";
 2 | import { flushSync } from "react-dom";
 3 | 
 4 | export const AutoBatchEventHandler = () => {
 5 |   console.log('AutoBatchEventHandler!!');
 6 | 
 7 |   const [state1, setState1] = useState<number>(0);
 8 |   const [state2, setState2] = useState<number>(0);
 9 | 
10 |   const onClickUpdateButton = () => {
11 |     flushSync(() => {
12 |       setState1((state1) => state1 + 1)
13 |     });
14 |     setState2((state2) => state2 + 1);
15 |   }
16 | 
17 |   return (
18 |     <div>
19 |       <p>Automatic Batching確認用（イベントハンドラ）</p>
20 |       <button onClick={onClickUpdateButton}>State更新</button>
21 |       <p>State1: {state1}</p>
22 |       <p>State2: {state2}</p>
23 |     </div>
24 |   )
25 | }
26 | 


--------------------------------------------------------------------------------
/src/componens/TaskList.tsx:
--------------------------------------------------------------------------------
 1 | import { memo, useDeferredValue } from "react";
 2 | import type { Task } from "./Transition"
 3 | 
 4 | type Props = {
 5 |   taskList: Task[];
 6 | }
 7 | 
 8 | export const TaskList = memo(({ taskList }: Props) => {
 9 |   const deferredTaskList = useDeferredValue(taskList);
10 | 
11 |   return (
12 |     <>
13 |       {deferredTaskList.map((task) => (
14 |         <div
15 |           key={task.id}
16 |           style={{
17 |             width: '300px',
18 |             margin: 'auto',
19 |             background: 'lavender',
20 |             // opacity: isPending ? 0.5 : 1
21 |           }}
22 |         >
23 |           <p>タイトル：{task.title}</p>
24 |           <p>担当：{task.assignee}</p>
25 |         </div>
26 |       ))}
27 |     </>
28 |   )
29 | })
30 | 


--------------------------------------------------------------------------------
/src/App.tsx:
--------------------------------------------------------------------------------
 1 | import { Suspense } from 'react';
 2 | import { ErrorBoundary } from 'react-error-boundary';
 3 | import './App.css';
 4 | import { AutoBatchEventHandler } from './componens/AutoBatchEventHandler';
 5 | import { AutoBatchOther } from './componens/AutoBatchOther';
 6 | import { ReactQuery } from './componens/ReactQuery';
 7 | import { Transition } from './componens/Transition';
 8 | 
 9 | function App() {
10 |   return (
11 |     <div className="App">
12 |       <AutoBatchEventHandler />
13 |       <AutoBatchOther />
14 |       <hr />
15 |       <Transition />
16 |       <hr />
17 |       <ErrorBoundary fallback={<h1>全体エラーだよ〜</h1>}>
18 |         <Suspense fallback={<p>全体ローディング中だよ〜</p>}>
19 |           <ReactQuery />
20 |         </Suspense>
21 |       </ErrorBoundary>
22 |     </div>
23 |   );
24 | }
25 | 
26 | export default App;
27 | 


--------------------------------------------------------------------------------
/src/componens/AlbumList.tsx:
--------------------------------------------------------------------------------
 1 | import { useQuery } from "@tanstack/react-query";
 2 | import axios from "axios";
 3 | 
 4 | const sleep = (ms: number): Promise<any> => {
 5 |   return new Promise((resolve) => {
 6 |     setTimeout(resolve, ms);
 7 |   });
 8 | }
 9 | 
10 | type Album = {
11 |   userId: number;
12 |   id: number;
13 |   title: string;
14 | }
15 | 
16 | const fetchAlbums = async () => {
17 |   const result = await axios.get<Album[]>('https://jsonplaceholder.typicode.com/albums').then(await sleep(5000));
18 |   return result.data;
19 | }
20 | 
21 | export const AlbumList = () => {
22 |   const { data } = useQuery<Album[]>(['albums'], fetchAlbums);
23 | 
24 |   return (
25 |     <div style={{ height: '300px', border: '2px solid gray', background: 'cornsilk', overflowY: 'scroll' }}>
26 |       <h2>アルバム</h2>
27 |       {data?.map((album) => <p key={album.id}>{album.title}</p>)}
28 |     </div>
29 |   )
30 | }
31 | 


--------------------------------------------------------------------------------
/src/index.tsx:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import ReactDOM from 'react-dom/client';
 3 | import './index.css';
 4 | import App from './App';
 5 | import reportWebVitals from './reportWebVitals';
 6 | import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 7 | 
 8 | const queryClient = new QueryClient({
 9 |   defaultOptions: {
10 |     queries: {
11 |       suspense: true,
12 |     },
13 |   },
14 | });
15 | 
16 | const root = ReactDOM.createRoot(
17 |   document.getElementById('root') as HTMLElement
18 | );
19 | root.render(
20 |   <React.StrictMode>
21 |     <QueryClientProvider client={queryClient}>
22 |       <App />
23 |     </QueryClientProvider>
24 |   </React.StrictMode>
25 | );
26 | 
27 | // If you want to start measuring performance in your app, pass a function
28 | // to log results (for example: reportWebVitals(console.log))
29 | // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
30 | reportWebVitals();
31 | 


--------------------------------------------------------------------------------
/src/componens/AutoBatchOther.tsx:
--------------------------------------------------------------------------------
 1 | import { useState } from "react";
 2 | import { flushSync } from "react-dom";
 3 | 
 4 | type Todo = {
 5 |   userId: number;
 6 |   id: number;
 7 |   title: string;
 8 |   completed: boolean;
 9 | }
10 | 
11 | export const AutoBatchOther = () => {
12 |   console.log('AutoBatchOther!!');
13 | 
14 |   const [todos, setTodos] = useState<Todo[] | null>(null);
15 |   const [isFinishApi, setIsFinishApi] = useState<boolean>(false);
16 | 
17 |   // Promise内等イベントハンドラ以外の場所ではAitomatic Batchingされていなかった
18 |   const onClickExecuteApi = () => {
19 |     fetch('https://jsonplaceholder.typicode.com/todos')
20 |       .then((res) => res.json())
21 |       .then((data) => {
22 |         flushSync(() => {
23 |           setTodos(data);
24 |         });
25 |         setIsFinishApi(true);
26 |       })
27 |   }
28 | 
29 |   return (
30 |     <div>
31 |       <p>Automatic Batching確認用（その他）</p>
32 |       <button onClick={onClickExecuteApi}>API実行</button>
33 |       <p>isFinishApi: {isFinishApi ? 'true' : 'false'}</p>
34 |       {todos?.map((todo) => <p key={todo.id}>{todo.title}</p>)}
35 |     </div>
36 |   )
37 | }
38 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # react18-explanation-react18
 2 | 
 3 | ## コードと実装差分
 4 | 
 5 | コースのレクチャー毎に実装している内容を追いやすいように、その段階でのコードと実装差分を見れるようにしています。
 6 | 
 7 | 本リポジトリはコースを作成する前に実装したものなので多少の違いはあるかもしれませんが、ほとんど同様の内容となっています。
 8 | 
 9 | - 3.Automatic Batching
10 |   - [コード](https://github.com/reachscript-jak/react18-explanation-react18/tree/bda31e49a97a2c4f8dd9a4e387a329053aaa0406)
11 |   - [差分](https://github.com/reachscript-jak/react18-explanation-react18/commit/bda31e49a97a2c4f8dd9a4e387a329053aaa0406)
12 |   - [プルリク](https://github.com/reachscript-jak/react18-explanation-react18/pull/1)
13 | 
14 | - 4.Transition
15 |   - [コード](https://github.com/reachscript-jak/react18-explanation-react18/tree/4cd537cb78722b6cdc55c4f8861b2c45b75d3aa2)
16 |   - [差分](https://github.com/reachscript-jak/react18-explanation-react18/commit/4cd537cb78722b6cdc55c4f8861b2c45b75d3aa2)
17 |   - [プルリク](https://github.com/reachscript-jak/react18-explanation-react18/pull/2)
18 | 
19 | - 5.Suspense - その1（文法編）
20 |   - [コード](https://github.com/reachscript-jak/react18-explanation-react18/tree/db2905ce7514d11feb4e1e1431be27378096e4d8)
21 |   - [差分](https://github.com/reachscript-jak/react18-explanation-react18/commit/db2905ce7514d11feb4e1e1431be27378096e4d8)
22 |   - [プルリク](https://github.com/reachscript-jak/react18-explanation-react18/pull/3)
23 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "react18-explanation-react18",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "@tanstack/react-query": "^4.2.1",
 7 |     "@testing-library/jest-dom": "^5.14.1",
 8 |     "@testing-library/react": "^13.0.0",
 9 |     "@testing-library/user-event": "^13.2.1",
10 |     "@types/jest": "^27.0.1",
11 |     "@types/node": "^16.7.13",
12 |     "@types/react": "^18.0.0",
13 |     "@types/react-dom": "^18.0.0",
14 |     "axios": "^0.27.2",
15 |     "react": "^18.2.0",
16 |     "react-dom": "^18.2.0",
17 |     "react-error-boundary": "^3.1.4",
18 |     "react-scripts": "5.0.1",
19 |     "typescript": "^4.4.2",
20 |     "web-vitals": "^2.1.0"
21 |   },
22 |   "scripts": {
23 |     "start": "react-scripts start",
24 |     "build": "react-scripts build",
25 |     "test": "react-scripts test",
26 |     "eject": "react-scripts eject"
27 |   },
28 |   "eslintConfig": {
29 |     "extends": [
30 |       "react-app",
31 |       "react-app/jest"
32 |     ]
33 |   },
34 |   "browserslist": {
35 |     "production": [
36 |       ">0.2%",
37 |       "not dead",
38 |       "not op_mini all"
39 |     ],
40 |     "development": [
41 |       "last 1 chrome version",
42 |       "last 1 firefox version",
43 |       "last 1 safari version"
44 |     ]
45 |   }
46 | }
47 | 


--------------------------------------------------------------------------------
/src/componens/ReactQuery.tsx:
--------------------------------------------------------------------------------
 1 | import { Suspense, useState, useTransition } from "react"
 2 | import { ErrorBoundary } from "react-error-boundary"
 3 | import { AlbumList } from "./AlbumList"
 4 | import { Sidebar } from "./Sidebar"
 5 | import { TodoList } from "./TodoList"
 6 | 
 7 | type Tabs = 'todo' | 'album';
 8 | 
 9 | export const ReactQuery = () => {
10 |   const [selectedTab, setSelectedTab] = useState<Tabs>('todo');
11 |   const [isPending, startTransition] = useTransition();
12 | 
13 |   const buttonStyle = {
14 |     padding: '12px',
15 |     fontSize: '16px',
16 |     border: 'none',
17 |     opacity: isPending ? 0.5 : 1,
18 |   }
19 |   const albumButtonStyle = {
20 |     ...buttonStyle,
21 |     backgroundColor: selectedTab === 'album' ? 'royalblue' : 'white',
22 |     color: selectedTab === 'album' ? 'white' : 'black',
23 |   }
24 |   const todoButtonStyle = {
25 |     ...buttonStyle,
26 |     backgroundColor: selectedTab === 'todo' ? 'royalblue' : 'white',
27 |     color: selectedTab === 'todo' ? 'white' : 'black',
28 |   }
29 | 
30 |   const onClickTabButton = (tab: Tabs) => {
31 |     startTransition(() => {
32 |       setSelectedTab(tab);
33 |     });
34 |   }
35 | 
36 |   return (
37 |     <div style={{ display: 'flex', padding: '16px' }}>
38 |       <Sidebar />
39 |       <div style={{ flexGrow: 1 }}>
40 |         <ErrorBoundary fallback={<h1>Todo or AlbumListエラーだよ〜</h1>}>
41 |           <Suspense fallback={<p>Todo or AlbumListローディング中だよ〜</p>}>
42 |             <button style={todoButtonStyle} onClick={() => onClickTabButton('todo')}>Todo</button>
43 |             <button style={albumButtonStyle} onClick={() => onClickTabButton('album')}>Album</button>
44 |             {selectedTab === 'todo' ? <TodoList /> : <AlbumList />}
45 |           </Suspense>
46 |         </ErrorBoundary>
47 |       </div>
48 |     </div>
49 |   )
50 | }
51 | 


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8" />
 5 |     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
 6 |     <meta name="viewport" content="width=device-width, initial-scale=1" />
 7 |     <meta name="theme-color" content="#000000" />
 8 |     <meta
 9 |       name="description"
10 |       content="Web site created using create-react-app"
11 |     />
12 |     <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
13 |     <!--
14 |       manifest.json provides metadata used when your web app is installed on a
15 |       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
16 |     -->
17 |     <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
18 |     <!--
19 |       Notice the use of %PUBLIC_URL% in the tags above.
20 |       It will be replaced with the URL of the `public` folder during the build.
21 |       Only files inside the `public` folder can be referenced from the HTML.
22 | 
23 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
24 |       work correctly both with client-side routing and a non-root public URL.
25 |       Learn how to configure a non-root public URL by running `npm run build`.
26 |     -->
27 |     <title>React App</title>
28 |   </head>
29 |   <body>
30 |     <noscript>You need to enable JavaScript to run this app.</noscript>
31 |     <div id="root"></div>
32 |     <!--
33 |       This HTML file is a template.
34 |       If you open it directly in the browser, you will see an empty page.
35 | 
36 |       You can add webfonts, meta tags, or analytics to this file.
37 |       The build step will place the bundled scripts into the <body> tag.
38 | 
39 |       To begin the development, run `npm start` or `yarn start`.
40 |       To create a production bundle, use `npm run build` or `yarn build`.
41 |     -->
42 |   </body>
43 | </html>
44 | 


--------------------------------------------------------------------------------
/src/componens/Transition.tsx:
--------------------------------------------------------------------------------
 1 | import { useState } from "react";
 2 | import { Avatar } from "./Avatar";
 3 | import { ReactQuery } from "./ReactQuery";
 4 | import { TaskList } from "./TaskList";
 5 | 
 6 | export type Task = {
 7 |   id: number;
 8 |   title: string;
 9 |   assignee: string;
10 | }
11 | 
12 | const member = {
13 |   a: 'A',
14 |   b: 'B',
15 |   c: 'C',
16 | }
17 | 
18 | const generateDummyTasks = (): Task[] => {
19 |   return Array(10000).fill('').map((_, index) => {
20 |     const addedIndex = index + 1;
21 |     return {
22 |       id: addedIndex,
23 |       title: `タスク${addedIndex}`,
24 |       assignee: addedIndex % 3 === 0 ? member.a : addedIndex % 2 === 0 ? member.b : member.c,
25 |     }
26 |   })
27 | }
28 | const tasks = generateDummyTasks();
29 | 
30 | const filteringAssignee = (assignee: string) => {
31 |   if (assignee === '') return tasks;
32 |   return tasks.filter((task) => task.assignee === assignee);
33 | }
34 | 
35 | export const Transition = () => {
36 |   const [selectedAssignee, setSelectedAssignee] = useState<string>('');
37 |   const [taskList, setTaskList] = useState<Task[]>(tasks);
38 |   const [isShowList, setIsShowList] = useState<boolean>(false);
39 | 
40 |   const onClickAssignee = (assignee: string) => {
41 |     setSelectedAssignee(assignee);
42 |     setTaskList(filteringAssignee(assignee));
43 |   }
44 | 
45 |   return (
46 |     <div>
47 |       <p>transition</p>
48 |       <div style={{ display: 'flex', justifyContent: 'center' }}>
49 |         <Avatar isSelected={selectedAssignee === member.a} onClick={onClickAssignee}>{member.a}</Avatar>
50 |         <Avatar isSelected={selectedAssignee === member.b} onClick={onClickAssignee}>{member.b}</Avatar>
51 |         <Avatar isSelected={selectedAssignee === member.c} onClick={onClickAssignee}>{member.c}</Avatar>
52 |       </div>
53 |       <br />
54 |       <button onClick={() => onClickAssignee('')}>リセット</button>
55 |       <br />
56 |       <br />
57 |       <button onClick={() => setIsShowList(!isShowList)}>表示/非表示</button>
58 |       {isShowList && <TaskList taskList={taskList} />}
59 |     </div>
60 |   )
61 | }
62 | 


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