create project

.eslintrc.js

+module.exports = {
+  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
+  parserOptions: {
+    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
+    sourceType: 'module', // Allows for the use of imports
+    ecmaFeatures: {
+      jsx: true, // Allows for the parsing of JSX
+    },
+  },
+  settings: {
+    react: {
+      version: 'detect', // Tells eslint-plugin-react to automatically detect the version of React to use
+    },
+  },
+  extends: [
+    'react-app',
+    'react-app/jest',
+    'plugin:react/recommended', // Uses the recommended rules from @eslint-plugin-react
+    'plugin:prettier/recommended', // Enables eslint-plugin-prettier and eslint-config-prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
+  ],
+  plugins: ['react', 'react-hooks'],
+  rules: {
+    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
+    // e.g. "@typescript-eslint/explicit-function-return-type": "off",
+  },
+}

.prettierignore

+node_modules
+dist
\ No newline at end of file

.prettierrc.js

+module.exports = {
+  printWidth: 100, // 指定代码长度，超出换行
+  tabWidth: 2, // tab 键的宽度
+  useTabs: false, // 不使用tab
+  semi: false, // 结尾加上分号
+  singleQuote: true, // 使用单引号
+  quoteProps: 'as-needed', // 要求对象字面量属性是否使用引号包裹,(‘as-needed’: 没有特殊要求，禁止使用，'consistent': 保持一致 , preserve: 不限制，想用就用)
+  jsxSingleQuote: false, // jsx 语法中使用单引号
+  trailingComma: 'es5', // 确保对象的最后一个属性后有逗号
+  bracketSpacing: true, // 大括号有空格 { name: 'rose' }
+  jsxBracketSameLine: false, // 在多行JSX元素的最后一行追加 >
+  arrowParens: 'always', // 箭头函数，单个参数添加括号
+  requirePragma: false, // 是否严格按照文件顶部的特殊注释格式化代码
+  insertPragma: false, // 是否在格式化的文件顶部插入Pragma标记，以表明该文件被prettier格式化过了
+  proseWrap: 'preserve', // 按照文件原样折行
+  htmlWhitespaceSensitivity: 'ignore', // html文件的空格敏感度，控制空格是否影响布局
+  endOfLine: 'auto', // 结尾是 \n \r \n\r auto
+}

config/env.js

+const fs = require('fs')
+const path = require('path')
+const paths = require('./paths')
+
+// Make sure that including paths.js after env.js will read .env variables.
+delete require.cache[require.resolve('./paths')]
+
+const NODE_ENV = process.env.NODE_ENV
+if (!NODE_ENV) {
+  throw new Error('The NODE_ENV environment variable is required but was not specified.')
+}
+
+// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
+const dotenvFiles = [
+  `${paths.dotenv}.${NODE_ENV}.local`,
+  // Don't include `.env.local` for `test` environment
+  // since normally you expect tests to produce the same
+  // results for everyone
+  NODE_ENV !== 'test' && `${paths.dotenv}.local`,
+  `${paths.dotenv}.${NODE_ENV}`,
+  paths.dotenv,
+].filter(Boolean)
+
+// Load environment variables from .env* files. Suppress warnings using silent
+// if this file is missing. dotenv will never modify any environment variables
+// that have already been set.  Variable expansion is supported in .env files.
+// https://github.com/motdotla/dotenv
+// https://github.com/motdotla/dotenv-expand
+dotenvFiles.forEach((dotenvFile) => {
+  if (fs.existsSync(dotenvFile)) {
+    require('dotenv-expand')(
+      require('dotenv').config({
+        path: dotenvFile,
+      })
+    )
+  }
+})
+
+// We support resolving modules according to `NODE_PATH`.
+// This lets you use absolute paths in imports inside large monorepos:
+// https://github.com/facebook/create-react-app/issues/253.
+// It works similar to `NODE_PATH` in Node itself:
+// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
+// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
+// Otherwise, we risk importing Node.js core modules into an app instead of webpack shims.
+// https://github.com/facebook/create-react-app/issues/1023#issuecomment-265344421
+// We also resolve them to make sure all tools using them work consistently.
+const appDirectory = fs.realpathSync(process.cwd())
+process.env.NODE_PATH = (process.env.NODE_PATH || '')
+  .split(path.delimiter)
+  .filter((folder) => folder && !path.isAbsolute(folder))
+  .map((folder) => path.resolve(appDirectory, folder))
+  .join(path.delimiter)
+
+// Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be
+// injected into the application via DefinePlugin in webpack configuration.
+const REACT_APP = /^REACT_APP_/i
+
+function getClientEnvironment(publicUrl) {
+  const raw = Object.keys(process.env)
+    .filter((key) => REACT_APP.test(key))
+    .reduce(
+      (env, key) => {
+        env[key] = process.env[key]
+        return env
+      },
+      {
+        // Useful for determining whether we’re running in production mode.
+        // Most importantly, it switches React into the correct mode.
+        NODE_ENV: process.env.NODE_ENV || 'development',
+        // Useful for resolving the correct path to static assets in `public`.
+        // For example, <img src={process.env.PUBLIC_URL + '/img/logo.png'} />.
+        // This should only be used as an escape hatch. Normally you would put
+        // images into the `src` and `import` them in code to get their paths.
+        PUBLIC_URL: publicUrl,
+        // We support configuring the sockjs pathname during development.
+        // These settings let a developer run multiple simultaneous projects.
+        // They are used as the connection `hostname`, `pathname` and `port`
+        // in webpackHotDevClient. They are used as the `sockHost`, `sockPath`
+        // and `sockPort` options in webpack-dev-server.
+        WDS_SOCKET_HOST: process.env.WDS_SOCKET_HOST,
+        WDS_SOCKET_PATH: process.env.WDS_SOCKET_PATH,
+        WDS_SOCKET_PORT: process.env.WDS_SOCKET_PORT,
+        // Whether or not react-refresh is enabled.
+        // It is defined here so it is available in the webpackHotDevClient.
+        FAST_REFRESH: process.env.FAST_REFRESH !== 'false',
+      }
+    )
+  // Stringify all values so we can feed into webpack DefinePlugin
+  const stringified = {
+    'process.env': Object.keys(raw).reduce((env, key) => {
+      env[key] = JSON.stringify(raw[key])
+      return env
+    }, {}),
+  }
+
+  return { raw, stringified }
+}
+
+module.exports = getClientEnvironment

config/getHttpsConfig.js

+const fs = require('fs')
+const path = require('path')
+const crypto = require('crypto')
+const chalk = require('react-dev-utils/chalk')
+const paths = require('./paths')
+
+// Ensure the certificate and key provided are valid and if not
+// throw an easy to debug error
+function validateKeyAndCerts({ cert, key, keyFile, crtFile }) {
+  let encrypted
+  try {
+    // publicEncrypt will throw an error with an invalid cert
+    encrypted = crypto.publicEncrypt(cert, Buffer.from('test'))
+  } catch (err) {
+    throw new Error(`The certificate "${chalk.yellow(crtFile)}" is invalid.\n${err.message}`)
+  }
+
+  try {
+    // privateDecrypt will throw an error with an invalid key
+    crypto.privateDecrypt(key, encrypted)
+  } catch (err) {
+    throw new Error(`The certificate key "${chalk.yellow(keyFile)}" is invalid.\n${err.message}`)
+  }
+}
+
+// Read file and throw an error if it doesn't exist
+function readEnvFile(file, type) {
+  if (!fs.existsSync(file)) {
+    throw new Error(
+      `You specified ${chalk.cyan(type)} in your env, but the file "${chalk.yellow(
+        file
+      )}" can't be found.`
+    )
+  }
+  return fs.readFileSync(file)
+}
+
+// Get the https config
+// Return cert files if provided in env, otherwise just true or false
+function getHttpsConfig() {
+  const { SSL_CRT_FILE, SSL_KEY_FILE, HTTPS } = process.env
+  const isHttps = HTTPS === 'true'
+
+  if (isHttps && SSL_CRT_FILE && SSL_KEY_FILE) {
+    const crtFile = path.resolve(paths.appPath, SSL_CRT_FILE)
+    const keyFile = path.resolve(paths.appPath, SSL_KEY_FILE)
+    const config = {
+      cert: readEnvFile(crtFile, 'SSL_CRT_FILE'),
+      key: readEnvFile(keyFile, 'SSL_KEY_FILE'),
+    }
+
+    validateKeyAndCerts({ ...config, keyFile, crtFile })
+    return config
+  }
+  return isHttps
+}
+
+module.exports = getHttpsConfig

config/jest/babelTransform.js

+'use strict';
+
+const babelJest = require('babel-jest').default;
+
+const hasJsxRuntime = (() => {
+  if (process.env.DISABLE_NEW_JSX_TRANSFORM === 'true') {
+    return false;
+  }
+
+  try {
+    require.resolve('react/jsx-runtime');
+    return true;
+  } catch (e) {
+    return false;
+  }
+})();
+
+module.exports = babelJest.createTransformer({
+  presets: [
+    [
+      require.resolve('babel-preset-react-app'),
+      {
+        runtime: hasJsxRuntime ? 'automatic' : 'classic',
+      },
+    ],
+  ],
+  babelrc: false,
+  configFile: false,
+});

config/jest/cssTransform.js

+'use strict';
+
+// This is a custom Jest transformer turning style imports into empty objects.
+// http://facebook.github.io/jest/docs/en/webpack.html
+
+module.exports = {
+  process() {
+    return 'module.exports = {};';
+  },
+  getCacheKey() {
+    // The output is always the same.
+    return 'cssTransform';
+  },
+};

config/jest/fileTransform.js

+'use strict';
+
+const path = require('path');
+const camelcase = require('camelcase');
+
+// This is a custom Jest transformer turning file imports into filenames.
+// http://facebook.github.io/jest/docs/en/webpack.html
+
+module.exports = {
+  process(src, filename) {
+    const assetFilename = JSON.stringify(path.basename(filename));
+
+    if (filename.match(/\.svg$/)) {
+      // Based on how SVGR generates a component name:
+      // https://github.com/smooth-code/svgr/blob/01b194cf967347d43d4cbe6b434404731b87cf27/packages/core/src/state.js#L6
+      const pascalCaseFilename = camelcase(path.parse(filename).name, {
+        pascalCase: true,
+      });
+      const componentName = `Svg${pascalCaseFilename}`;
+      return `const React = require('react');
+      module.exports = {
+        __esModule: true,
+        default: ${assetFilename},
+        ReactComponent: React.forwardRef(function ${componentName}(props, ref) {
+          return {
+            $$typeof: Symbol.for('react.element'),
+            type: 'svg',
+            ref: ref,
+            key: null,
+            props: Object.assign({}, props, {
+              children: ${assetFilename}
+            })
+          };
+        }),
+      };`;
+    }
+
+    return `module.exports = ${assetFilename};`;
+  },
+};

config/modules.js

+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const paths = require('./paths')
+const chalk = require('react-dev-utils/chalk')
+const resolve = require('resolve')
+
+/**
+ * Get additional module paths based on the baseUrl of a compilerOptions object.
+ *
+ * @param {Object} options
+ */
+function getAdditionalModulePaths(options = {}) {
+  const baseUrl = options.baseUrl
+
+  if (!baseUrl) {
+    return ''
+  }
+
+  const baseUrlResolved = path.resolve(paths.appPath, baseUrl)
+
+  // We don't need to do anything if `baseUrl` is set to `node_modules`. This is
+  // the default behavior.
+  if (path.relative(paths.appNodeModules, baseUrlResolved) === '') {
+    return null
+  }
+
+  // Allow the user set the `baseUrl` to `appSrc`.
+  if (path.relative(paths.appSrc, baseUrlResolved) === '') {
+    return [paths.appSrc]
+  }
+
+  // If the path is equal to the root directory we ignore it here.
+  // We don't want to allow importing from the root directly as source files are
+  // not transpiled outside of `src`. We do allow importing them with the
+  // absolute path (e.g. `src/Components/Button.js`) but we set that up with
+  // an alias.
+  if (path.relative(paths.appPath, baseUrlResolved) === '') {
+    return null
+  }
+
+  // Otherwise, throw an error.
+  throw new Error(
+    chalk.red.bold(
+      "Your project's `baseUrl` can only be set to `src` or `node_modules`." +
+        ' Create React App does not support other values at this time.'
+    )
+  )
+}
+
+/**
+ * Get webpack aliases based on the baseUrl of a compilerOptions object.
+ *
+ * @param {*} options
+ */
+function getWebpackAliases(options = {}) {
+  const baseUrl = options.baseUrl
+
+  if (!baseUrl) {
+    return {}
+  }
+
+  const baseUrlResolved = path.resolve(paths.appPath, baseUrl)
+
+  if (path.relative(paths.appPath, baseUrlResolved) === '') {
+    return {
+      src: paths.appSrc,
+    }
+  }
+}
+
+/**
+ * Get jest aliases based on the baseUrl of a compilerOptions object.
+ *
+ * @param {*} options
+ */
+function getJestAliases(options = {}) {
+  const baseUrl = options.baseUrl
+
+  if (!baseUrl) {
+    return {}
+  }
+
+  const baseUrlResolved = path.resolve(paths.appPath, baseUrl)
+
+  if (path.relative(paths.appPath, baseUrlResolved) === '') {
+    return {
+      '^src/(.*)$': '<rootDir>/src/$1',
+    }
+  }
+}
+
+function getModules() {
+  // Check if TypeScript is setup
+  const hasTsConfig = fs.existsSync(paths.appTsConfig)
+  const hasJsConfig = fs.existsSync(paths.appJsConfig)
+
+  if (hasTsConfig && hasJsConfig) {
+    throw new Error(
+      'You have both a tsconfig.json and a jsconfig.json. If you are using TypeScript please remove your jsconfig.json file.'
+    )
+  }
+
+  let config
+
+  // If there's a tsconfig.json we assume it's a
+  // TypeScript project and set up the config
+  // based on tsconfig.json
+  if (hasTsConfig) {
+    const ts = require(resolve.sync('typescript', {
+      basedir: paths.appNodeModules,
+    }))
+    config = ts.readConfigFile(paths.appTsConfig, ts.sys.readFile).config
+    // Otherwise we'll check if there is jsconfig.json
+    // for non TS projects.
+  } else if (hasJsConfig) {
+    config = require(paths.appJsConfig)
+  }
+
+  config = config || {}
+  const options = config.compilerOptions || {}
+
+  const additionalModulePaths = getAdditionalModulePaths(options)
+
+  return {
+    additionalModulePaths: additionalModulePaths,
+    webpackAliases: getWebpackAliases(options),
+    jestAliases: getJestAliases(options),
+    hasTsConfig,
+  }
+}
+
+module.exports = getModules()

config/paths.js

+const path = require('path')
+const fs = require('fs')
+const getPublicUrlOrPath = require('react-dev-utils/getPublicUrlOrPath')
+
+// Make sure any symlinks in the project folder are resolved:
+// https://github.com/facebook/create-react-app/issues/637
+const appDirectory = fs.realpathSync(process.cwd())
+const resolveApp = (relativePath) => path.resolve(appDirectory, relativePath)
+
+// We use `PUBLIC_URL` environment variable or "homepage" field to infer
+// "public path" at which the app is served.
+// webpack needs to know it to put the right <script> hrefs into HTML even in
+// single-page apps that may serve index.html for nested URLs like /todos/42.
+// We can't use a relative path in HTML because we don't want to load something
+// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
+const publicUrlOrPath = getPublicUrlOrPath(
+  process.env.NODE_ENV === 'development',
+  require(resolveApp('package.json')).homepage,
+  process.env.PUBLIC_URL
+)
+
+const buildPath = process.env.BUILD_PATH || 'build'
+
+const moduleFileExtensions = [
+  'web.mjs',
+  'mjs',
+  'web.js',
+  'js',
+  'web.ts',
+  'ts',
+  'web.tsx',
+  'tsx',
+  'json',
+  'web.jsx',
+  'jsx',
+]
+
+// Resolve file paths in the same order as webpack
+const resolveModule = (resolveFn, filePath) => {
+  const extension = moduleFileExtensions.find((extension) =>
+    fs.existsSync(resolveFn(`${filePath}.${extension}`))
+  )
+
+  if (extension) {
+    return resolveFn(`${filePath}.${extension}`)
+  }
+
+  return resolveFn(`${filePath}.js`)
+}
+
+// config after eject: we're in ./config/
+module.exports = {
+  dotenv: resolveApp('.env'),
+  appPath: resolveApp('.'),
+  appBuild: resolveApp(buildPath),
+  appPublic: resolveApp('public'),
+  appHtml: resolveApp('public/index.html'),
+  appIndexJs: resolveModule(resolveApp, 'src/index'),
+  appPackageJson: resolveApp('package.json'),
+  appSrc: resolveApp('src'),
+  appTsConfig: resolveApp('tsconfig.json'),
+  appJsConfig: resolveApp('jsconfig.json'),
+  yarnLockFile: resolveApp('yarn.lock'),
+  testsSetup: resolveModule(resolveApp, 'src/setupTests'),
+  proxySetup: resolveApp('src/setupProxy.js'),
+  appNodeModules: resolveApp('node_modules'),
+  appWebpackCache: resolveApp('node_modules/.cache'),
+  appTsBuildInfoFile: resolveApp('node_modules/.cache/tsconfig.tsbuildinfo'),
+  swSrc: resolveModule(resolveApp, 'src/service-worker'),
+  publicUrlOrPath,
+}
+
+module.exports.moduleFileExtensions = moduleFileExtensions

config/webpack/persistentCache/createEnvironmentHash.js

+const { createHash } = require('crypto')
+
+module.exports = (env) => {
+  const hash = createHash('md5')
+  hash.update(JSON.stringify(env))
+
+  return hash.digest('hex')
+}

config/webpackDevServer.config.js

+const fs = require('fs')
+const evalSourceMapMiddleware = require('react-dev-utils/evalSourceMapMiddleware')
+const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware')
+const ignoredFiles = require('react-dev-utils/ignoredFiles')
+const redirectServedPath = require('react-dev-utils/redirectServedPathMiddleware')
+const paths = require('./paths')
+const getHttpsConfig = require('./getHttpsConfig')
+
+const host = process.env.HOST || '0.0.0.0'
+const sockHost = process.env.WDS_SOCKET_HOST
+const sockPath = process.env.WDS_SOCKET_PATH // default: '/ws'
+const sockPort = process.env.WDS_SOCKET_PORT
+
+module.exports = function (proxy, allowedHost) {
+  const disableFirewall = !proxy || process.env.DANGEROUSLY_DISABLE_HOST_CHECK === 'true'
+  return {
+    // WebpackDevServer 2.4.3 introduced a security fix that prevents remote
+    // websites from potentially accessing local content through DNS rebinding:
+    // https://github.com/webpack/webpack-dev-server/issues/887
+    // https://medium.com/webpack/webpack-dev-server-middleware-security-issues-1489d950874a
+    // However, it made several existing use cases such as development in cloud
+    // environment or subdomains in development significantly more complicated:
+    // https://github.com/facebook/create-react-app/issues/2271
+    // https://github.com/facebook/create-react-app/issues/2233
+    // While we're investigating better solutions, for now we will take a
+    // compromise. Since our WDS configuration only serves files in the `public`
+    // folder we won't consider accessing them a vulnerability. However, if you
+    // use the `proxy` feature, it gets more dangerous because it can expose
+    // remote code execution vulnerabilities in backends like Django and Rails.
+    // So we will disable the host check normally, but enable it if you have
+    // specified the `proxy` setting. Finally, we let you override it if you
+    // really know what you're doing with a special environment variable.
+    // Note: ["localhost", ".localhost"] will support subdomains - but we might
+    // want to allow setting the allowedHosts manually for more complex setups
+    allowedHosts: disableFirewall ? 'all' : [allowedHost],
+    headers: {
+      'Access-Control-Allow-Origin': '*',
+      'Access-Control-Allow-Methods': '*',
+      'Access-Control-Allow-Headers': '*',
+    },
+    // Enable gzip compression of generated files.
+    compress: true,
+    static: {
+      // By default WebpackDevServer serves physical files from current directory
+      // in addition to all the virtual build products that it serves from memory.
+      // This is confusing because those files won’t automatically be available in
+      // production build folder unless we copy them. However, copying the whole
+      // project directory is dangerous because we may expose sensitive files.
+      // Instead, we establish a convention that only files in `public` directory
+      // get served. Our build script will copy `public` into the `build` folder.
+      // In `index.html`, you can get URL of `public` folder with %PUBLIC_URL%:
+      // <link rel="icon" href="%PUBLIC_URL%/favicon.ico">
+      // In JavaScript code, you can access it with `process.env.PUBLIC_URL`.
+      // Note that we only recommend to use `public` folder as an escape hatch
+      // for files like `favicon.ico`, `manifest.json`, and libraries that are
+      // for some reason broken when imported through webpack. If you just want to
+      // use an image, put it in `src` and `import` it from JavaScript instead.
+      directory: paths.appPublic,
+      publicPath: [paths.publicUrlOrPath],
+      // By default files from `contentBase` will not trigger a page reload.
+      watch: {
+        // Reportedly, this avoids CPU overload on some systems.
+        // https://github.com/facebook/create-react-app/issues/293
+        // src/node_modules is not ignored to support absolute imports
+        // https://github.com/facebook/create-react-app/issues/1065
+        ignored: ignoredFiles(paths.appSrc),
+      },
+    },
+    client: {
+      webSocketURL: {
+        // Enable custom sockjs pathname for websocket connection to hot reloading server.
+        // Enable custom sockjs hostname, pathname and port for websocket connection
+        // to hot reloading server.
+        hostname: sockHost,
+        pathname: sockPath,
+        port: sockPort,
+      },
+      overlay: {
+        errors: true,
+        warnings: false,
+      },
+    },
+    devMiddleware: {
+      // It is important to tell WebpackDevServer to use the same "publicPath" path as
+      // we specified in the webpack config. When homepage is '.', default to serving
+      // from the root.
+      // remove last slash so user can land on `/test` instead of `/test/`
+      publicPath: paths.publicUrlOrPath.slice(0, -1),
+    },
+
+    https: getHttpsConfig(),
+    host,
+    historyApiFallback: {
+      // Paths with dots should still use the history fallback.
+      // See https://github.com/facebook/create-react-app/issues/387.
+      disableDotRule: true,
+      index: paths.publicUrlOrPath,
+    },
+    // `proxy` is run between `before` and `after` `webpack-dev-server` hooks
+    proxy,
+    onBeforeSetupMiddleware(devServer) {
+      // Keep `evalSourceMapMiddleware`
+      // middlewares before `redirectServedPath` otherwise will not have any effect
+      // This lets us fetch source contents from webpack for the error overlay
+      devServer.app.use(evalSourceMapMiddleware(devServer))
+
+      if (fs.existsSync(paths.proxySetup)) {
+        // This registers user provided middleware for proxy reasons
+        require(paths.proxySetup)(devServer.app)
+      }
+    },
+    onAfterSetupMiddleware(devServer) {
+      // Redirect to `PUBLIC_URL` or `homepage` from `package.json` if url not match
+      devServer.app.use(redirectServedPath(paths.publicUrlOrPath))
+
+      // This service worker file is effectively a 'no-op' that will reset any
+      // previous service worker registered for the same host:port combination.
+      // We do this in development to avoid hitting the production cache if
+      // it used the same host and port.
+      // https://github.com/facebook/create-react-app/issues/2272#issuecomment-302832432
+      devServer.app.use(noopServiceWorkerMiddleware(paths.publicUrlOrPath))
+    },
+  }
+}

package.json

@@ -3,6 +3,9 @@
   "version": "0.1.0",
   "version": "0.1.0",
   "private": true,
   "private": true,
   "dependencies": {
   "dependencies": {
+    "@babel/core": "^7.16.0",
+    "@pmmmwh/react-refresh-webpack-plugin": "^0.5.3",
+    "@svgr/webpack": "^5.5.0",
     "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/react": "^13.0.0",
     "@testing-library/react": "^13.0.0",
     "@testing-library/user-event": "^13.2.1",
     "@testing-library/user-event": "^13.2.1",
@@ -10,17 +13,63 @@
     "@types/node": "^16.7.13",
     "@types/node": "^16.7.13",
     "@types/react": "^18.0.0",
     "@types/react": "^18.0.0",
     "@types/react-dom": "^18.0.0",
     "@types/react-dom": "^18.0.0",
+    "babel-jest": "^27.4.2",
+    "babel-loader": "^8.2.3",
+    "babel-plugin-named-asset-import": "^0.3.8",
+    "babel-preset-react-app": "^10.0.1",
+    "bfj": "^7.0.2",
+    "browserslist": "^4.18.1",
+    "camelcase": "^6.2.1",
+    "case-sensitive-paths-webpack-plugin": "^2.4.0",
+    "css-loader": "^6.5.1",
+    "css-minimizer-webpack-plugin": "^3.2.0",
+    "dotenv": "^10.0.0",
+    "dotenv-expand": "^5.1.0",
+    "eslint": "^8.33.0",
+    "eslint-config-react-app": "^7.0.1",
+    "eslint-webpack-plugin": "^3.1.1",
+    "file-loader": "^6.2.0",
+    "fs-extra": "^10.0.0",
+    "html-webpack-plugin": "^5.5.0",
+    "identity-obj-proxy": "^3.0.0",
+    "jest": "^27.4.3",
+    "jest-resolve": "^27.4.2",
+    "jest-watch-typeahead": "^1.0.0",
+    "mini-css-extract-plugin": "^2.4.5",
+    "postcss": "^8.4.4",
+    "postcss-flexbugs-fixes": "^5.0.2",
+    "postcss-loader": "^6.2.1",
+    "postcss-normalize": "^10.0.1",
+    "postcss-preset-env": "^7.0.1",
+    "prompts": "^2.4.2",
     "react": "^18.2.0",
     "react": "^18.2.0",
+    "react-app-polyfill": "^3.0.0",
+    "react-dev-utils": "^12.0.1",
     "react-dom": "^18.2.0",
     "react-dom": "^18.2.0",
-    "react-scripts": "5.0.1",
+    "react-refresh": "^0.11.0",
+    "resolve": "^1.20.0",
+    "resolve-url-loader": "^4.0.0",
+    "sass-loader": "^12.3.0",
+    "semver": "^7.3.5",
+    "source-map-loader": "^3.0.0",
+    "style-loader": "^3.3.1",
+    "tailwindcss": "^3.0.2",
+    "terser-webpack-plugin": "^5.2.5",
     "typescript": "^4.4.2",
     "typescript": "^4.4.2",
-    "web-vitals": "^2.1.0"
+    "web-vitals": "^2.1.0",
+    "webpack": "^5.64.4",
+    "webpack-dev-server": "^4.6.0",
+    "webpack-manifest-plugin": "^4.0.2",
+    "workbox-webpack-plugin": "^6.4.1"
   },
   },
   "scripts": {
   "scripts": {
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "start": "node scripts/start.js",
+    "build": "node scripts/build.js",
+    "test": "node scripts/test.js",
+    "lint": "eslint --ext .js --ext .jsx src",
+    "lint:fix": "eslint -c ./.eslintrc.js --ext .js,.jsx,.ts,.tsx src/ --fix",
+    "prettier": "npx prettier src test --check",
+    "prettier:fix": "npm run prettier --write"
   },
   },
   "eslintConfig": {
   "eslintConfig": {
     "extends": [
     "extends": [
@@ -39,5 +88,69 @@
       "last 1 firefox version",
       "last 1 firefox version",
       "last 1 safari version"
       "last 1 safari version"
     ]
     ]
+  },
+  "jest": {
+    "roots": [
+      "<rootDir>/src"
+    ],
+    "collectCoverageFrom": [
+      "src/**/*.{js,jsx,ts,tsx}",
+      "!src/**/*.d.ts"
+    ],
+    "setupFiles": [
+      "react-app-polyfill/jsdom"
+    ],
+    "setupFilesAfterEnv": [
+      "<rootDir>/src/setupTests.ts"
+    ],
+    "testMatch": [
+      "<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}",
+      "<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}"
+    ],
+    "testEnvironment": "jsdom",
+    "transform": {
+      "^.+\\.(js|jsx|mjs|cjs|ts|tsx)$": "<rootDir>/config/jest/babelTransform.js",
+      "^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
+      "^(?!.*\\.(js|jsx|mjs|cjs|ts|tsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
+    },
+    "transformIgnorePatterns": [
+      "[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|cjs|ts|tsx)$",
+      "^.+\\.module\\.(css|sass|scss)$"
+    ],
+    "modulePaths": [],
+    "moduleNameMapper": {
+      "^react-native$": "react-native-web",
+      "^.+\\.module\\.(css|sass|scss)$": "identity-obj-proxy"
+    },
+    "moduleFileExtensions": [
+      "web.js",
+      "js",
+      "web.ts",
+      "ts",
+      "web.tsx",
+      "tsx",
+      "json",
+      "web.jsx",
+      "jsx",
+      "node"
+    ],
+    "watchPlugins": [
+      "jest-watch-typeahead/filename",
+      "jest-watch-typeahead/testname"
+    ],
+    "resetMocks": true
+  },
+  "babel": {
+    "presets": [
+      "react-app"
+    ]
+  },
+  "devDependencies": {
+    "eslint-config-prettier": "^8.6.0",
+    "eslint-plugin-prettier": "^4.2.1",
+    "eslint-plugin-react": "^7.32.2",
+    "prettier": "^2.8.3",
+    "prettier-eslint": "^15.0.1",
+    "sass": "^1.57.1"
   }
   }
 }
 }

scripts/build.js

+// Do this as the first thing so that any code reading it knows the right env.
+process.env.BABEL_ENV = 'production'
+process.env.NODE_ENV = 'production'
+
+// Makes the script crash on unhandled rejections instead of silently
+// ignoring them. In the future, promise rejections that are not handled will
+// terminate the Node.js process with a non-zero exit code.
+process.on('unhandledRejection', (err) => {
+  throw err
+})
+
+// Ensure environment variables are read.
+require('../config/env')
+
+const path = require('path')
+const chalk = require('react-dev-utils/chalk')
+const fs = require('fs-extra')
+const bfj = require('bfj')
+const webpack = require('webpack')
+const configFactory = require('../config/webpack.config')
+const paths = require('../config/paths')
+const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles')
+const formatWebpackMessages = require('react-dev-utils/formatWebpackMessages')
+const printHostingInstructions = require('react-dev-utils/printHostingInstructions')
+const FileSizeReporter = require('react-dev-utils/FileSizeReporter')
+const printBuildError = require('react-dev-utils/printBuildError')
+
+const measureFileSizesBeforeBuild = FileSizeReporter.measureFileSizesBeforeBuild
+const printFileSizesAfterBuild = FileSizeReporter.printFileSizesAfterBuild
+const useYarn = fs.existsSync(paths.yarnLockFile)
+
+// These sizes are pretty large. We'll warn for bundles exceeding them.
+const WARN_AFTER_BUNDLE_GZIP_SIZE = 512 * 1024
+const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024
+
+const isInteractive = process.stdout.isTTY
+
+// Warn and crash if required files are missing
+if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
+  process.exit(1)
+}
+
+const argv = process.argv.slice(2)
+const writeStatsJson = argv.indexOf('--stats') !== -1
+
+// Generate configuration
+const config = configFactory('production')
+
+// We require that you explicitly set browsers and do not fall back to
+// browserslist defaults.
+const { checkBrowsers } = require('react-dev-utils/browsersHelper')
+checkBrowsers(paths.appPath, isInteractive)
+  .then(() => {
+    // First, read the current file sizes in build directory.
+    // This lets us display how much they changed later.
+    return measureFileSizesBeforeBuild(paths.appBuild)
+  })
+  .then((previousFileSizes) => {
+    // Remove all content but keep the directory so that
+    // if you're in it, you don't end up in Trash
+    fs.emptyDirSync(paths.appBuild)
+    // Merge with the public folder
+    copyPublicFolder()
+    // Start the webpack build
+    return build(previousFileSizes)
+  })
+  .then(
+    ({ stats, previousFileSizes, warnings }) => {
+      if (warnings.length) {
+        console.log(chalk.yellow('Compiled with warnings.\n'))
+        console.log(warnings.join('\n\n'))
+        console.log(
+          '\nSearch for the ' +
+            chalk.underline(chalk.yellow('keywords')) +
+            ' to learn more about each warning.'
+        )
+        console.log(
+          'To ignore, add ' + chalk.cyan('// eslint-disable-next-line') + ' to the line before.\n'
+        )
+      } else {
+        console.log(chalk.green('Compiled successfully.\n'))
+      }
+
+      console.log('File sizes after gzip:\n')
+      printFileSizesAfterBuild(
+        stats,
+        previousFileSizes,
+        paths.appBuild,
+        WARN_AFTER_BUNDLE_GZIP_SIZE,
+        WARN_AFTER_CHUNK_GZIP_SIZE
+      )
+      console.log()
+
+      const appPackage = require(paths.appPackageJson)
+      const publicUrl = paths.publicUrlOrPath
+      const publicPath = config.output.publicPath
+      const buildFolder = path.relative(process.cwd(), paths.appBuild)
+      printHostingInstructions(appPackage, publicUrl, publicPath, buildFolder, useYarn)
+    },
+    (err) => {
+      const tscCompileOnError = process.env.TSC_COMPILE_ON_ERROR === 'true'
+      if (tscCompileOnError) {
+        console.log(
+          chalk.yellow(
+            'Compiled with the following type errors (you may want to check these before deploying your app):\n'
+          )
+        )
+        printBuildError(err)
+      } else {
+        console.log(chalk.red('Failed to compile.\n'))
+        printBuildError(err)
+        process.exit(1)
+      }
+    }
+  )
+  .catch((err) => {
+    if (err && err.message) {
+      console.log(err.message)
+    }
+    process.exit(1)
+  })
+
+// Create the production build and print the deployment instructions.
+function build(previousFileSizes) {
+  console.log('Creating an optimized production build...')
+
+  const compiler = webpack(config)
+  return new Promise((resolve, reject) => {
+    compiler.run((err, stats) => {
+      let messages
+      if (err) {
+        if (!err.message) {
+          return reject(err)
+        }
+
+        let errMessage = err.message
+
+        // Add additional information for postcss errors
+        if (Object.prototype.hasOwnProperty.call(err, 'postcssNode')) {
+          errMessage += '\nCompileError: Begins at CSS selector ' + err['postcssNode'].selector
+        }
+
+        messages = formatWebpackMessages({
+          errors: [errMessage],
+          warnings: [],
+        })
+      } else {
+        messages = formatWebpackMessages(stats.toJson({ all: false, warnings: true, errors: true }))
+      }
+      if (messages.errors.length) {
+        // Only keep the first error. Others are often indicative
+        // of the same problem, but confuse the reader with noise.
+        if (messages.errors.length > 1) {
+          messages.errors.length = 1
+        }
+        return reject(new Error(messages.errors.join('\n\n')))
+      }
+      if (
+        process.env.CI &&
+        (typeof process.env.CI !== 'string' || process.env.CI.toLowerCase() !== 'false') &&
+        messages.warnings.length
+      ) {
+        // Ignore sourcemap warnings in CI builds. See #8227 for more info.
+        const filteredWarnings = messages.warnings.filter(
+          (w) => !/Failed to parse source map/.test(w)
+        )
+        if (filteredWarnings.length) {
+          console.log(
+            chalk.yellow(
+              '\nTreating warnings as errors because process.env.CI = true.\n' +
+                'Most CI servers set it automatically.\n'
+            )
+          )
+          return reject(new Error(filteredWarnings.join('\n\n')))
+        }
+      }
+
+      const resolveArgs = {
+        stats,
+        previousFileSizes,
+        warnings: messages.warnings,
+      }
+
+      if (writeStatsJson) {
+        return bfj
+          .write(paths.appBuild + '/bundle-stats.json', stats.toJson())
+          .then(() => resolve(resolveArgs))
+          .catch((error) => reject(new Error(error)))
+      }
+
+      return resolve(resolveArgs)
+    })
+  })
+}
+
+function copyPublicFolder() {
+  fs.copySync(paths.appPublic, paths.appBuild, {
+    dereference: true,
+    filter: (file) => file !== paths.appHtml,
+  })
+}

scripts/start.js

+// Do this as the first thing so that any code reading it knows the right env.
+process.env.BABEL_ENV = 'development'
+process.env.NODE_ENV = 'development'
+
+// Makes the script crash on unhandled rejections instead of silently
+// ignoring them. In the future, promise rejections that are not handled will
+// terminate the Node.js process with a non-zero exit code.
+process.on('unhandledRejection', (err) => {
+  throw err
+})
+
+// Ensure environment variables are read.
+require('../config/env')
+
+const fs = require('fs')
+const chalk = require('react-dev-utils/chalk')
+const webpack = require('webpack')
+const WebpackDevServer = require('webpack-dev-server')
+const clearConsole = require('react-dev-utils/clearConsole')
+const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles')
+const {
+  choosePort,
+  createCompiler,
+  prepareProxy,
+  prepareUrls,
+} = require('react-dev-utils/WebpackDevServerUtils')
+const openBrowser = require('react-dev-utils/openBrowser')
+const semver = require('semver')
+const paths = require('../config/paths')
+const configFactory = require('../config/webpack.config')
+const createDevServerConfig = require('../config/webpackDevServer.config')
+const getClientEnvironment = require('../config/env')
+const react = require(require.resolve('react', { paths: [paths.appPath] }))
+
+const env = getClientEnvironment(paths.publicUrlOrPath.slice(0, -1))
+const useYarn = fs.existsSync(paths.yarnLockFile)
+const isInteractive = process.stdout.isTTY
+
+// Warn and crash if required files are missing
+if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
+  process.exit(1)
+}
+
+// Tools like Cloud9 rely on this.
+const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000
+const HOST = process.env.HOST || '0.0.0.0'
+
+if (process.env.HOST) {
+  console.log(
+    chalk.cyan(
+      `Attempting to bind to HOST environment variable: ${chalk.yellow(
+        chalk.bold(process.env.HOST)
+      )}`
+    )
+  )
+  console.log(`If this was unintentional, check that you haven't mistakenly set it in your shell.`)
+  console.log(`Learn more here: ${chalk.yellow('https://cra.link/advanced-config')}`)
+  console.log()
+}
+
+// We require that you explicitly set browsers and do not fall back to
+// browserslist defaults.
+const { checkBrowsers } = require('react-dev-utils/browsersHelper')
+checkBrowsers(paths.appPath, isInteractive)
+  .then(() => {
+    // We attempt to use the default port but if it is busy, we offer the user to
+    // run on a different port. `choosePort()` Promise resolves to the next free port.
+    return choosePort(HOST, DEFAULT_PORT)
+  })
+  .then((port) => {
+    if (port == null) {
+      // We have not found a port.
+      return
+    }
+
+    const config = configFactory('development')
+    const protocol = process.env.HTTPS === 'true' ? 'https' : 'http'
+    const appName = require(paths.appPackageJson).name
+
+    const useTypeScript = fs.existsSync(paths.appTsConfig)
+    const urls = prepareUrls(protocol, HOST, port, paths.publicUrlOrPath.slice(0, -1))
+    // Create a webpack compiler that is configured with custom messages.
+    const compiler = createCompiler({
+      appName,
+      config,
+      urls,
+      useYarn,
+      useTypeScript,
+      webpack,
+    })
+    // Load proxy config
+    const proxySetting = require(paths.appPackageJson).proxy
+    const proxyConfig = prepareProxy(proxySetting, paths.appPublic, paths.publicUrlOrPath)
+    // Serve webpack assets generated by the compiler over a web server.
+    const serverConfig = {
+      ...createDevServerConfig(proxyConfig, urls.lanUrlForConfig),
+      host: HOST,
+      port,
+    }
+    const devServer = new WebpackDevServer(serverConfig, compiler)
+    // Launch WebpackDevServer.
+    devServer.startCallback(() => {
+      if (isInteractive) {
+        clearConsole()
+      }
+
+      if (env.raw.FAST_REFRESH && semver.lt(react.version, '16.10.0')) {
+        console.log(
+          chalk.yellow(
+            `Fast Refresh requires React 16.10 or higher. You are using React ${react.version}.`
+          )
+        )
+      }
+
+      console.log(chalk.cyan('Starting the development server...\n'))
+      openBrowser(urls.localUrlForBrowser)
+    })
+    ;['SIGINT', 'SIGTERM'].forEach(function (sig) {
+      process.on(sig, function () {
+        devServer.close()
+        process.exit()
+      })
+    })
+
+    if (process.env.CI !== 'true') {
+      // Gracefully exit when stdin ends
+      process.stdin.on('end', function () {
+        devServer.close()
+        process.exit()
+      })
+    }
+  })
+  .catch((err) => {
+    if (err && err.message) {
+      console.log(err.message)
+    }
+    process.exit(1)
+  })

scripts/test.js

+// Do this as the first thing so that any code reading it knows the right env.
+process.env.BABEL_ENV = 'test'
+process.env.NODE_ENV = 'test'
+process.env.PUBLIC_URL = ''
+
+// Makes the script crash on unhandled rejections instead of silently
+// ignoring them. In the future, promise rejections that are not handled will
+// terminate the Node.js process with a non-zero exit code.
+process.on('unhandledRejection', (err) => {
+  throw err
+})
+
+// Ensure environment variables are read.
+require('../config/env')
+
+const jest = require('jest')
+const execSync = require('child_process').execSync
+let argv = process.argv.slice(2)
+
+function isInGitRepository() {
+  try {
+    execSync('git rev-parse --is-inside-work-tree', { stdio: 'ignore' })
+    return true
+  } catch (e) {
+    return false
+  }
+}
+
+function isInMercurialRepository() {
+  try {
+    execSync('hg --cwd . root', { stdio: 'ignore' })
+    return true
+  } catch (e) {
+    return false
+  }
+}
+
+// Watch unless on CI or explicitly running all tests
+if (
+  !process.env.CI &&
+  argv.indexOf('--watchAll') === -1 &&
+  argv.indexOf('--watchAll=false') === -1
+) {
+  // https://github.com/facebook/create-react-app/issues/5210
+  const hasSourceControl = isInGitRepository() || isInMercurialRepository()
+  argv.push(hasSourceControl ? '--watch' : '--watchAll')
+}
+
+jest.run(argv)

src/App.css → src/App.scss

@@ -22,6 +22,9 @@
   justify-content: center;
   justify-content: center;
   font-size: calc(10px + 2vmin);
   font-size: calc(10px + 2vmin);
   color: white;
   color: white;
+  .add {
+    
+  }
 }
 }
 
 
 .App-link {
 .App-link {

src/App.test.tsx

-import React from 'react';
-import { render, screen } from '@testing-library/react';
-import App from './App';
+import React from 'react'
+import { render, screen } from '@testing-library/react'
+import App from './App'
 
 
 test('renders learn react link', () => {
 test('renders learn react link', () => {
-  render(<App />);
-  const linkElement = screen.getByText(/learn react/i);
-  expect(linkElement).toBeInTheDocument();
-});
+  render(<App />)
+  const linkElement = screen.getByText(/learn react/i)
+  expect(linkElement).toBeInTheDocument()
+})

src/App.tsx

-import React from 'react';
-import logo from './logo.svg';
-import './App.css';
+import React from 'react'
+import logo from './logo.svg'
+import './App.scss'
 
 
 function App() {
 function App() {
   return (
   return (
@@ -20,7 +20,7 @@ function App() {
         </a>
         </a>
       </header>
       </header>
     </div>
     </div>
-  );
+  )
 }
 }
 
 
-export default App;
+export default App

src/index.tsx

-import React from 'react';
-import ReactDOM from 'react-dom/client';
-import './index.css';
-import App from './App';
-import reportWebVitals from './reportWebVitals';
+import React from 'react'
+import ReactDOM from 'react-dom/client'
+import './index.css'
+import App from './App'
+import reportWebVitals from './reportWebVitals'
 
 
-const root = ReactDOM.createRoot(
-  document.getElementById('root') as HTMLElement
-);
+const root = ReactDOM.createRoot(document.getElementById('root') as HTMLElement)
 root.render(
 root.render(
   <React.StrictMode>
   <React.StrictMode>
     <App />
     <App />
   </React.StrictMode>
   </React.StrictMode>
-);
-
+)
 // If you want to start measuring performance in your app, pass a function
 // If you want to start measuring performance in your app, pass a function
 // to log results (for example: reportWebVitals(console.log))
 // to log results (for example: reportWebVitals(console.log))
 // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
 // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
-reportWebVitals();
+reportWebVitals()

src/react-app-env.d.ts

-/// <reference types="react-scripts" />
+/// <reference types="node" />
+/// <reference types="react" />
+/// <reference types="react-dom" />
+
+declare namespace NodeJS {
+  interface ProcessEnv {
+    readonly NODE_ENV: 'development' | 'production' | 'test'
+    readonly PUBLIC_URL: string
+  }
+}
+
+declare module '*.avif' {
+  const src: string
+  export default src
+}
+
+declare module '*.bmp' {
+  const src: string
+  export default src
+}
+
+declare module '*.gif' {
+  const src: string
+  export default src
+}
+
+declare module '*.jpg' {
+  const src: string
+  export default src
+}
+
+declare module '*.jpeg' {
+  const src: string
+  export default src
+}
+
+declare module '*.png' {
+  const src: string
+  export default src
+}
+
+declare module '*.webp' {
+  const src: string
+  export default src
+}
+
+declare module '*.svg' {
+  import * as React from 'react'
+
+  export const ReactComponent: React.FunctionComponent<
+    React.SVGProps<SVGSVGElement> & { title?: string }
+  >
+
+  const src: string
+  export default src
+}
+
+declare module '*.module.css' {
+  const classes: { readonly [key: string]: string }
+  export default classes
+}
+
+declare module '*.module.scss' {
+  const classes: { readonly [key: string]: string }
+  export default classes
+}
+
+declare module '*.module.sass' {
+  const classes: { readonly [key: string]: string }
+  export default classes
+}

src/reportWebVitals.ts

-import { ReportHandler } from 'web-vitals';
+import { ReportHandler } from 'web-vitals'
 
 
 const reportWebVitals = (onPerfEntry?: ReportHandler) => {
 const reportWebVitals = (onPerfEntry?: ReportHandler) => {
   if (onPerfEntry && onPerfEntry instanceof Function) {
   if (onPerfEntry && onPerfEntry instanceof Function) {
     import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
     import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
-      getCLS(onPerfEntry);
-      getFID(onPerfEntry);
-      getFCP(onPerfEntry);
-      getLCP(onPerfEntry);
-      getTTFB(onPerfEntry);
-    });
+      getCLS(onPerfEntry)
+      getFID(onPerfEntry)
+      getFCP(onPerfEntry)
+      getLCP(onPerfEntry)
+      getTTFB(onPerfEntry)
+    })
   }
   }
-};
+}
 
 
-export default reportWebVitals;
+export default reportWebVitals

src/setupTests.ts

@@ -2,4 +2,4 @@
 // allows you to do things like:
 // allows you to do things like:
 // expect(element).toHaveTextContent(/react/i)
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
 // learn more: https://github.com/testing-library/jest-dom
-import '@testing-library/jest-dom';
+import '@testing-library/jest-dom'