Eject exposes webPack configuration information
Reworked CRA project from React-app-Rewired to a native WebPack build
Package. The json (original)
"scripts": {
"start": "set PORT=3000 && react-app-rewired start"."build": "react-app-rewired build"."test": "node scripts/test.js --env=jsdom"."lint": "eslint --ext .jsx --ext .js src --fix"
}Copy the code
Eject (yarn eject)
Before eject, you need to add the eject command to package.json as follows:
"scripts": {
"start": "set PORT=3000 && react-app-rewired start"."build": "react-app-rewired build"."test": "node scripts/test.js --env=jsdom"."lint": "eslint --ext .jsx --ext .js src --fix"."eject": "react-scripts eject"// add eject}Copy the codeExposing the webPack configuration of the project (this process is irreversible, please handle with caution)
Code structure (original)
.├ ─.Eslintignore ├─.Eslintrc ├─.Project ├─ Build │ ├─ Asset - Manifest.json │ ├─..Eslintignore ├─.Eslintrc ├─.Project ├─.MD ├─ Build │ ├─ Asset - Manifest Favicon. Ico │ ├─ index.html │ ├─ manifest.json │ ├─ ├─ class-├ ─ ├─ class-exercises │ ├─ class-exercises │ ├─ class-exercises │ ├─ class-exercises │ ├─ class-exercises │ The config - overrides. Js ├ ─ package - lock. Json ├ ─ package. The json ├ ─ public │ ├ ─ the favicon. Ico │ ├ ─ index. The HTML │ └ ─ the manifest. Json ├─ SRC │ ├─ assets │ ├─ fonts │ ├─ images │ ├─ styles │ ├─ config │ ├─ index.js │ ├─ containers │ ├─ AccountCenter │ ├─ AddAccount │ ├─ CampaignDetail │ ├─ CampaignPlaza │ ├─ CampaignDetail │ ├─ DefaultPage │ ├─ FinancialCenter │ │ ├ ─ ForgetLoginPassword │ │ ├ ─ ForgetTriggerEmailSuccess │ │ ├ ─ HelpCenter │ │ ├ ─ HelpCenterFromLand │ │ ├ ─ LatestNews │ │ ├ ─ MyCase │ │ ├ ─ PaymentDetails │ │ ├ ─ PaymentInfo │ │ ├ ─ RegSuccess │ │ ├ ─ RegisterStep1 │ │ ├ ─ RegisterStep2 │ │ ├ ─ RegisterStep3 │ │ ├ ─ ResetLoginPassword │ │ ├ ─ ResetSuccess │ │ ├ ─ ResetWithdrawPassword │ │ ├ ─ Simplest │ │ ├ ─ UpdateUserInfo │ │ ├ ─ WithdrawDetails │ │ └ ─ Withdrawals │ ├ ─ index. The js │ ├ ─ layout │ │ ├ ─ HomeFooter │ │ ├ ─ HomeHeader │ │ ├ ─ LandFooter │ │ ├ ─ PureHeader │ │ └ ─ TopHeader │ ├ ─ locales │ │ ├ ─ en_US. Js │ │ └ ─ zh_CN. Js │ ├ ─ RegisterServiceWorker. Js │ ├ ─ the route │ │ └ ─ index. The js │ ├ ─ sagas │ │ └ ─ index. The js │ ├ ─ store │ │ └ ─ index. The js │ ├ ─ utils │ │ ├ ─ RSA. Js │ │ ├ ─ async - component. Js │ │ ├ ─ index. The js │ │ ├ ─ request. Js │ │ ├ ─ request1. Js │ │ └ ─ the upload. Js │ └ ─ views │ ├─ Home │ ├─ Land │ ├─ Login │ ├─ pressCopy the codeCode Structure (New)
.├ ─.Eslintignore ├─.Eslintrc ├─.Project ├─ Build │ ├─ Asset - Manifest.json │ ├─..Eslintignore ├─.Eslintrc ├─.Project ├─.MD ├─ Build │ ├─ Asset - Manifest The favicon. Ico │ ├ ─ index. The HTML │ ├ ─ the manifest. Json │ ├ ─ service - worker. Js │ └ ─ static │ ├ ─ CSS │ ├ ─ js │ └ ─ media ├ ─ config │ ├ ─ env. Js │ ├ ─ jest │ │ ├ ─ cssTransform. Js │ │ └ ─ fileTransform. Js │ ├ ─ paths. The js / / path information │ ├ ─ polyfills, js │ ├ ─ Webpack. Config. Dev. Js / / development environment configuration information │ ├ ─ webpack. Config. Prod. Js / / production environment with information │ └ ─ webpackDevServer. Config. Js ├ ─ The config - overrides. Js ├ ─ package - lock. Json ├ ─ package. The json ├ ─ public │ ├ ─ the favicon. Ico │ ├ ─ index. The HTML │ └ ─ the manifest. Json ├─ scripts │ ├─ build.js │ ├─ class.js │ ├─ SRC │ ├─ assets │ ├─ ─ images │ ├─ styles │ ├─ Config │ ├─ ├─ activit. js │ ├─ AccountCenter │ ├─ CampaignDetail │ ├─ CampaignPlaza │ │ ├ ─ CaseDetail │ │ ├ ─ DefaultPage │ │ ├ ─ FinancialCenter │ │ ├ ─ ForgetLoginPassword │ │ ├ ─ ForgetTriggerEmailSuccess │ │ ├─ HelpCenter │ │ ├─ HelpCenter from land │ │ ├─ late news │ │ ├─ MyCase │ │ ├─ PaymentDetails │ │ ├─ PaymentInfo │ │ ├─ HelpCenter from land │ │ ├─ late news │ ├─ MyCase │ ├─ PaymentInfo │ │ ├ ─ RegSuccess │ │ ├ ─ RegisterStep1 │ │ ├ ─ RegisterStep2 │ │ ├ ─ RegisterStep3 │ │ ├ ─ ResetLoginPassword │ │ ├ ─ ResetSuccess │ │ ├ ─ ResetWithdrawPassword │ │ ├ ─ Simplest │ │ ├ ─ UpdateUserInfo │ │ ├ ─ WithdrawDetails │ │ └ ─ Withdrawals │ ├ ─ index. Js │ ├ ─ layout │ │ ├ ─ HomeFooter │ │ ├ ─ HomeHeader │ │ ├ ─ LandFooter │ │ ├ ─ PureHeader │ │ └ ─ TopHeader │ ├ ─ locales │ │ ├ ─ en_US. Js │ │ └ ─ zh_CN. Js │ ├ ─ registerServiceWorker. Js │ ├ ─ the route │ │ └ ─ index. The js │ ├ ─ Sagas │ │ └ ─ index. Js │ ├ ─ store │ │ └ ─ index. The js │ ├ ─ utils │ │ ├ ─ RSA. Js │ │ ├ ─ async - component. Js │ │ ├ ─ index. The js │ │ ├ ─ request. Js │ │ ├ ─ request1. Js │ │ └ ─ the upload. Js │ └ ─ views │ ├ ─ Home │ ├ ─ Land │ ├ ─ Login │ └ ─ Register ├ ─ yarn ├ ─ Yarn - error. The log └ ─ yarn. The lockCopy the code
You can see that after eject, the new code structure is mainly added config directory and scripts directory, where config directory is the directory where webpack configuration information is stored, scripts directory is the directory where script files are stored.
Dynamically switch components (Vue->React)
ESearch Front-end Architecture (Vue)
The above is the basic architecture of a Vue front-end project. Based on the idea of the project, we specially transform a single-page application into a multi-page application, and its front-end architecture is as follows:
React Front-end Architecture
As you can see, Vue projects can implement menu-component dynamic switching (similar to routing) through the Vue feature V-bind: IS.
Components: {pageA: () => import()"xxx/pageA"),
pageB: () => import("xxx/pageB"),
}
<component v-bind:is="pageA"/>
<component v-bind:is="pageB"/>Copy the codeSimilarly, the React project can implement menu-component dynamic switching (similar to routing)
import PageA from "@/containers/PageA";
import PageB from "@/containers/PageB";
import PageC from "@/containers/PageC";
const ComponentDict = {
'PageA': PageA,
'PageB': PageB,
'PageC': PageC
};
constructor() {
super();
this.state = {
currentComponentName: "PageA"} } onClickMenuItem = ({key}) => { this.setState({ currentComponentName: key }); }; Const {currentComponentName} = this.state; / / currentComponentName for'PageA', the component PageA // currentComponentName is displayed'PageB'PageB const CurrentComponent = ComponentDict[CurrentComponent Name]; <Layout> <Header> <Menu onClick={this.onClickMenuItem}> < menu.item key="PageA">PageA</Menu.Item>
<Menu.Item key="PageB">PageB</Menu.Item>
<Menu.Item key="PageC">PageC</Menu.Item>
</Menu>
</Header>
<Content>
<CurrentComponent/>
</Content>
</Layout>Copy the codeWebpack configuration modified
Entry configuration (Location: module.exports-> Entry, 4 entries)
webpack.config.dev.js
/* * entry: [require.resolve()'./polyfills'),
require.resolve('react-dev-utils/webpackHotDevClient'),
paths.appSrc + '/index.js',
]
*
* */
entry: {
// We ship a few polyfills by default:
// require.resolve('./polyfills'),
// Include an alternative client for WebpackDevServer. A client's job is to // connect to WebpackDevServer by a socket and get notified about changes. // When you save a file, the client will either apply hot updates (in case // of CSS changes), or refresh the page (in case of JS changes). When you // make a syntax error, this client will display a syntax error overlay. // Note: instead of the default WebpackDevServer client, we use a custom one // to bring better experience for Create React App users. You can replace // the line below with these two lines if you prefer the stock client: // require.resolve('webpack-dev-server/client'+'? /', // require.resolve('webpack/hot/dev-server'), // require.resolve('react-dev-utils/webpackHotDevClient'), // Finally, this is your app's code:
// paths.appIndexJs,
// We include the app code last so that if there is a runtime error during
// initialization, it doesn't blow up the WebpackDevServer client, And // changing JS code would still trigger a refresh. // create by lyb 2019/08/03 //./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/index.js', ], login: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/login.js', ], register: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/register.js', ], main: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/main.js']},Copy the codewebpack.config.prod.js
entry: {
// We ship a few polyfills by default:
// require.resolve('./polyfills'),
// Include an alternative client for WebpackDevServer. A client's job is to // connect to WebpackDevServer by a socket and get notified about changes. // When you save a file, the client will either apply hot updates (in case // of CSS changes), or refresh the page (in case of JS changes). When you // make a syntax error, this client will display a syntax error overlay. // Note: instead of the default WebpackDevServer client, we use a custom one // to bring better experience for Create React App users. You can replace // the line below with these two lines if you prefer the stock client: // require.resolve('webpack-dev-server/client'+'? /', // require.resolve('webpack/hot/dev-server'), // require.resolve('react-dev-utils/webpackHotDevClient'), // Finally, this is your app's code:
// paths.appIndexJs,
// We include the app code last so that if there is a runtime error during
// initialization, it doesn't blow up the WebpackDevServer client, and // changing JS code would still trigger a refresh. index: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/index.js', ], login: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/login.js', ], register: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/register.js', ], main: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/main.js']}Copy the codeModule. exports-> exports
webpack.config.dev.js
output: {
// Add /* filename */ comments to generated require()s in the output.
pathinfo: true,
// This does not produce a real file. It's just the virtual path that is // served by WebpackDevServer in development. This is the JS bundle // containing code from all our entry points, and the Webpack runtime. // created by lyb 2019/08/03 // filename: 'static/js/bundle.js' -> filename: 'static/js/[name].js'// The former corresponds to only one entry, while the latter corresponds to multiple entries.static/js/[name].js', // There are also additional JS chunk files if you use code splitting. chunkFilename: 'static/js/[name].chunk.js', // This is the URL that app is served from. We use "/" in development. publicPath: publicPath, // Point sourcemap entries to original disk location (format as URL on Windows) devtoolModuleFilenameTemplate: info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')},Copy the codeThe filename configuration item must be changed from the original ‘static/js/bundle.js’ to ‘static/js/[name].js’, otherwise an error will be reported.
webpack.config.prod.js
output: {
// The build folder.
path: paths.appBuild,
// Generated JS file names (with nested folders).
// There will be one main bundle, and one file per asynchronous chunk.
// We don't currently advertise code splitting but Webpack supports it. filename: 'static/js/[name].[chunkhash:8].js', chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js', // We inferred the "public path" (such as / or /my-project) from homepage. publicPath: publicPath, // Point sourcemap entries to original disk location (format as URL on Windows) devtoolModuleFilenameTemplate: info => path .relative(paths.appSrc, info.absoluteResourcePath) .replace(/\\/g, '/')},Copy the codeSupport for ANTD injection and less resolution (location: module.exports->module->rules->oneOf)
Module.exports ->module->rules->oneOf webpack.config.dev.js/webpack.config.prod.js (module: exports->module->rules->oneOf)
// Process JS with Babel.
{
test: /\.(js|jsx|mjs)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
plugins: [
[
require.resolve('babel-plugin-named-asset-import'),
{
loaderMap: {
svg: {
ReactComponent: '@svgr/webpack? -prettier,-svgo! [path]'},},},], // Inject antD, load on demand ["import", {
"libraryName": "antd"."libraryDirectory": "es"."style": true // `style: true}],], // This is a feature of 'babel-loader'for webpack (not Babel itself).
// It enables caching results in ./node_modules/.cache/babel-loader/
// directory for faster rebuilds.
cacheDirectory: true/ /,,}}"postcss" loader applies autoprefixer to our CSS.
// "css" loader resolves paths in CSS and adds assets as dependencies.
// "style" loader turns CSS into JS modules that inject <style> tags.
// In production, we use a plugin to extract that CSS to a file, but
// in development "style"Loader enables hot editing of CSS. {/ / eject the original after regular as / \. (CSS) $/, in order to support less file, need to change to / \. (CSS | less) $/test: /\.(css|less)$/,// test: /\.(css)$/ -> test: / \. (CSS | less) $/, regular use less new format: [the require. Resolve ('style-loader'),
{
loader: require.resolve('css-loader'),
options: {
importLoaders: 1,
},
},
{
loader: require.resolve('postcss-loader'),
options: {
// Necessary for external CSS imports to work
// https://github.com/facebookincubator/create-react-app/issues/2677
ident: 'postcss',
plugins: () => [
require('postcss-flexbugs-fixes'),
autoprefixer({
browsers: [
'> 1%'.'last 4 versions'.'Firefox ESR'.'not ie < 9', // React doesn't support IE8 anyway ], flexbox: 'no-2009',}),],},},}, // add less to the loader file.less-loader'), options: {Inline JavaScript is not enabled. Is it set in your options? JavascriptEnabled: true, // ANTD Global Personalized Style configuration modifyVars: {'primary-color':'#ffa726',
'link-color': '#5e77ff'}},}],}Copy the codePlugins configuration (location: module.exports->plugins)
Webpack.config.dev.js (4 entries, 4 new HtmlWebpackPlugin)
new HtmlWebpackPlugin({
inject: true, template: paths.appHtml,// in the paths file define path filename:'index.html',
chunks: ['index']
}),
new HtmlWebpackPlugin({
inject: true, template: paths.loginHtml,// Define path filename in the paths file:'login.html',
chunks: ['login']
}),
new HtmlWebpackPlugin({
inject: true, template: paths.registerHtml,// Define path filename in paths file:'register.html',
chunks: ['register']
}),
new HtmlWebpackPlugin({
inject: true, template: paths.mainhtml,// Define path filename in the paths file:'main.html',
chunks: ['main']}),Copy the codeWebpack.config.prod. js (4 entries, 4 new HtmlWebpackPlugin, the configuration of production environment is slightly different from that of development environment)
new HtmlWebpackPlugin({
inject: true, template: paths.appHtml,// in the paths file define path filename:'index.html',
chunks: ['index'],// specify chunks to separate code to load minify on demand: {removeComments:true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
}),
new HtmlWebpackPlugin({
inject: true, template: paths.loginHtml,// Define path filename in the paths file:'login.html',
chunks: ['login'],// specify chunks to separate code to load minify on demand: {removeComments:true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
}),
new HtmlWebpackPlugin({
inject: true, template: paths.registerHtml,// Define path filename in paths file:'register.html',
chunks: ['register'],// specify chunks to separate code to load minify on demand: {removeComments:true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
}),
new HtmlWebpackPlugin({
inject: true, template: paths.mainhtml,// Define path filename in the paths file:'main.html',
chunks: ['main'],// specify chunks to separate code to load minify on demand: {removeComments:true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,}}),Copy the codepackaging
yarn build
The folder directory structure after packaging successfully
Build ├─ Manifest.json ├─ Favicon.ico ├─ index.html ├─ login. HTML ├─ manifest.json ├─ register.html ├ ─ service - worker. Js └ ─ static ├ ─ CSS │ ├ ─ but a068eaf7. CSS │ ├ ─ but a068eaf7. CSS. The map │ ├ ─ login. 2 ff64c8e. CSS │ ├ ─ Login. 2 ff64c8e. CSS. The map │ ├ ─. Main c8e56e47. CSS │ ├ ─. Main c8e56e47. CSS. The map │ ├ ─ register. E54b83db. CSS │ └ ─ Register. E54b83db. CSS. The map ├ ─ js │ ├ ─ index. 2 c0736bd. Js │ ├ ─ index. 2 c0736bd. Js. Map │ ├ ─ login. Fd841272. Js │ ├ ─ Login. Fd841272. Js. Map │ ├ ─ main. 080 a9c11. Js │ ├ ─ main. 080 a9c11. Js. Map │ ├ ─ register. D2b9d5a2. Js │ └ ─ Register.d2b9d82.js. Map ├─ ├─ ├─ ├─ ├─ ├─ ├─ ├─ ├─ ├─ register.d2b9d82.jscd├─ img08.22d05748.png ├─ img08.22d05748.png ├─ login_bg.165CC596.jpgCopy the codeIt can be seen that the folder directory structure after packaging is mainly divided into the following four parts
- HTML (including index, Login, Register and Main)
- CSS (divided into 4 sections)
- Js (divided into 4 sections)
- Media (static resources: images, font files, etc.)
Complete WebPack configuration file
webpack.config.dev.js
'use strict';
const autoprefixer = require('autoprefixer');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
const eslintFormatter = require('react-dev-utils/eslintFormatter');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const getClientEnvironment = require('./env');
const paths = require('./paths');
// Webpack uses `publicPath` to determine where the app is being served from.
// In development, we always serve from the root. This makes config easier.
const publicPath = '/';
// `publicUrl` is just like `publicPath`, but we will provide it to our app
// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
// Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
const publicUrl = ' ';
// Get environment variables to inject into our app.
const env = getClientEnvironment(publicUrl);
// This is the development configuration.
// It is focused on developer experience and fast rebuilds.
// The production configuration is different and lives in a separate file.
module.exports = {
// You may want 'eval' instead if you prefer to see the compiled output in DevTools.
// See the discussion in https://github.com/facebookincubator/create-react-app/issues/343.
devtool: 'cheap-module-source-map',
// These are the "entry points" to our application.
// This means they will be the "root" imports that are included in JS bundle.
// The first two entry points enable "hot" CSS and auto-refreshes for// create by lyb 2019/08/03 /* * entry: [require.resolve()'./polyfills'),
require.resolve('react-dev-utils/webpackHotDevClient'),
paths.appSrc + '/index.js',
]
*
* */
entry: {
// We ship a few polyfills by default:
// require.resolve('./polyfills'),
// Include an alternative client for WebpackDevServer. A client's job is to // connect to WebpackDevServer by a socket and get notified about changes. // When you save a file, the client will either apply hot updates (in case // of CSS changes), or refresh the page (in case of JS changes). When you // make a syntax error, this client will display a syntax error overlay. // Note: instead of the default WebpackDevServer client, we use a custom one // to bring better experience for Create React App users. You can replace // the line below with these two lines if you prefer the stock client: // require.resolve('webpack-dev-server/client'+'? /', // require.resolve('webpack/hot/dev-server'), // require.resolve('react-dev-utils/webpackHotDevClient'), // Finally, this is your app's code:
// paths.appIndexJs,
// We include the app code last so that if there is a runtime error during
// initialization, it doesn't blow up the WebpackDevServer client, And // changing JS code would still trigger a refresh. // create by lyb 2019/08/03 //./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/index.js', ], login: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/login.js', ], register: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/register.js', ], main: [ require.resolve('./polyfills'), require.resolve('react-dev-utils/webpackHotDevClient'), paths.appSrc + '/main.js', ] }, output: { // Add /* filename */ comments to generated require()s in the output. pathinfo: true, // This does not produce a real file. It's just the virtual path that is
// served by WebpackDevServer in development. This is the JS bundle
// containing code from all our entry points, and the Webpack runtime.
// created by lyb 2019/08/03
// filename: 'static/js/bundle.js' -> filename: 'static/js/[name].js'// The former corresponds to only one entry, while the latter corresponds to multiple entries.'static/js/[name].js',
// There are also additional JS chunk files if you use code splitting.
chunkFilename: 'static/js/[name].chunk.js',
// This is the URL that app is served from. We use "/" in development.
publicPath: publicPath,
// Point sourcemap entries to original disk location (format as URL on Windows)
devtoolModuleFilenameTemplate: info =>
path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
},
resolve: {
// This allows you to set a fallback for where Webpack should look for modules.
// We placed these paths second because we want `node_modules` to "win"
// if there are any conflicts. This matches Node resolution mechanism.
// https://github.com/facebookincubator/create-react-app/issues/253
modules: ['node_modules', paths.appNodeModules].concat(
// It is guaranteed to exist because we tweak it in `env.js`
process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
),
// These are the reasonable defaults supported by the Node ecosystem.
// We also include JSX as a common component filename extension to support
// some tools, although we do not recommend using it, see:
// https://github.com/facebookincubator/create-react-app/issues/290
// `web` extension prefixes have been added for better support
// for React Native Web.
extensions: ['.web.js'.'.mjs'.'.js'.'.json'.'.web.jsx'.'.jsx'].alias: {
// Support React Native Web
// https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
'react-native': 'react-native-web'.The '@': paths.appSrc }, plugins: [ // Prevents users from importing files from outside of src/ (or node_modules/). // This often causes confusion because we only process files within src/ with babel. // To fix this, we prevent you from importing files out of src/ --if you'd like to, // please link the files into your node_modules/ and let module-resolution kick in. // Make sure your source files are compiled, as they will not be processed in any way. new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]), ], }, module: { strictExportPresence: true, rules: [ // TODO: Disable require.ensure as it's not a standard language feature.
// We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
// { parser: { requireEnsure: false } },
// First, run the linter.
// It's important to do this before Babel processes the JS. { test: /\.(js|jsx|mjs)$/, enforce: 'pre', use: [ { options: { formatter: eslintFormatter, eslintPath: require.resolve('eslint'), }, loader: require.resolve('eslint-loader'), }, ], include: paths.appSrc, }, { // "oneOf" will traverse all following loaders until one will // match the requirements. When no loader matches it will fall // back to the "file" loader at the end of the loader list. oneOf: [ // "url" loader works like "file" loader except that it embeds assets // smaller than specified limit in bytes as data URLs to avoid requests. // A missing `test` is equivalent to a match. { test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/], loader: require.resolve('url-loader'), options: { limit: 10000, name: 'static/media/[name].[hash:8].[ext]', }, }, // Process JS with Babel. { test: /\.(js|jsx|mjs)$/, include: paths.appSrc, loader: require.resolve('babel-loader'), options: { plugins: [ [ require.resolve('babel-plugin-named-asset-import'), { loaderMap: { svg: { ReactComponent: '@svgr/webpack? -prettier,-svgo! [path]',}}}], / / on-demand load [" import "{" libraryName" : "antd", "libraryDirectory" : "es", "style" : true / / ` style: True 'will load less file}],], // This is a feature of `babel-loader` for webpack (not Babel itself). // It enables caching results in ./node_modules/.cache/babel-loader/ // directory for faster rebuilds. cacheDirectory: true, }, }, // "postcss" loader applies autoprefixer to our CSS. // "css" loader resolves paths in CSS and adds assets as dependencies. // "style" loader turns CSS into JS modules that inject style-loader'), { loader: require.resolve('css-loader'), options: { importLoaders: 1, }, }, { loader: require.resolve('postcss-loader'), options: { // Necessary for external CSS imports to work // https://github.com/facebookincubator/create-react-app/issues/2677 ident: 'postcss', plugins: () => [ require('postcss-flexbugs-fixes'), autoprefixer({ browsers: [ '> 1%', 'last 4 versions', 'Firefox ESR', 'not ie < 9', // React doesn't support IE8 anyway
],
flexbox: 'no-2009'Resolve.resolve.resolve.resolve.resolve ()'less-loader'// Inline JavaScript is not enabled. Is itset in your options?
javascriptEnabled: true,
modifyVars: {
'primary-color': '#ffa726'.'link-color': '#5e77ff'}},}],}, //"file" loader makes sure those assets get served by WebpackDevServer.
// When you `import` an asset, you get its (virtual) filename.
// In production, they would get copied to the `build` folder.
// This loader doesn't use a "test" so it will catch all modules // that fall through the other loaders. { // Exclude `js` files to keep "css" loader working as it injects // its runtime that would otherwise processed through "file" loader. // Also exclude `html` and `json` extensions so they get processed // by webpacks internal loaders. exclude: [/\.(js|jsx|mjs)$/, /\.html$/, /\.json$/], loader: require.resolve('file-loader'), options: { name: 'static/media/[name].[hash:8].[ext]', }, }, ], }, // ** STOP ** Are you adding a new loader? // Make sure to add the new loader(s) before the "file" loader. ], }, plugins: [ // Makes some environment variables available in index.html. // The public URL is available as %PUBLIC_URL% in index.html, e.g.: //
// In development, this will be an empty string. new InterpolateHtmlPlugin(env.raw), // Generates an `index.html` file with the index.html', chunks: ['index'] }), new HtmlWebpackPlugin({ inject: true, template: paths.loginHtml, filename: 'login.html', chunks: ['login'] }), new HtmlWebpackPlugin({ inject: true, template: paths.registerHtml, filename: 'register.html', chunks: ['register'] }), new HtmlWebpackPlugin({ inject: true, template: paths.mainHtml, filename: 'main.html', chunks: ['main'] }), // Add module names to factory functions so they appear in browser profiler. new webpack.NamedModulesPlugin(), // Makes some environment variables available to the JS code, for example: // if (process.env.NODE_ENV === 'development') {... }. See `./env.js`. new webpack.DefinePlugin(env.stringified), // This is necessary to emit hot updates (currently CSS only): new webpack.HotModuleReplacementPlugin(), // Watcher doesn't work well if you mistype casing in a path so we use
// a plugin that prints an error when you attempt to do this.
// See https://github.com/facebookincubator/create-react-app/issues/240
new CaseSensitivePathsPlugin(),
// If you require a missing module and then `npm install` it, you still have
// to restart the development server for Webpack to discover it. This plugin
// makes the discovery automatic so you don't have to restart. // See https://github.com/facebookincubator/create-react-app/issues/186 new WatchMissingNodeModulesPlugin(paths.appNodeModules), // Moment.js is an extremely popular library that bundles large locale files // by default due to how Webpack interprets its code. This is a practical // solution that requires the user to opt into importing specific locales. // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack // You can remove this if you don't use Moment.js:
new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
],
// Some libraries import Node modules but don't use them in the browser. // Tell Webpack to provide empty mocks for them so importing them works. node: { dgram: 'empty', fs: 'empty', net: 'empty', tls: 'empty', child_process: 'empty', }, // Turn off performance hints during development because we don't do any
// splitting or minification in interest of speed. These warnings become
// cumbersome.
performance: {
hints: false,}};Copy the codewebpack.config.prod.js
'use strict';
const autoprefixer = require('autoprefixer');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const ManifestPlugin = require('webpack-manifest-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const SWPrecacheWebpackPlugin = require('sw-precache-webpack-plugin');
const eslintFormatter = require('react-dev-utils/eslintFormatter');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin'); // webpack const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const paths = require('./paths');
const getClientEnvironment = require('./env');
// Webpack uses `publicPath` to determine where the app is being served from.
// It requires a trailing slash, or the file assets will get an incorrect path.
const publicPath = paths.servedPath;
// Some apps do not use client-side routing with pushState.
// For these, "homepage" can be set to "." to enable relative asset paths.
const shouldUseRelativeAssetPaths = publicPath === '/';
// Source maps are resource heavy and can cause out of memory issue for large sourcefiles. const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP ! = ='false';
// `publicUrl` is just like `publicPath`, but we will provide it to our app
// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
// Omit trailing slash as %PUBLIC_URL%/xyz looks better than %PUBLIC_URL%xyz.
const publicUrl = publicPath.slice(0, -1);
// Get environment variables to inject into our app.
const env = getClientEnvironment(publicUrl);
// Assert this just to be safe.
// Development builds of React are slow and not intended for production.
if (env.stringified['process.env'].NODE_ENV ! = ='"production"') {
throw new Error('Production builds must have NODE_ENV=production.');
}
// Note: defined here because it will be used more than once.
const cssFilename = 'static/css/[name].[contenthash:8].css';
// ExtractTextPlugin expects the build output to be flat.
// (See https://github.com/webpack-contrib/extract-text-webpack-plugin/issues/27)
// However, our output is structured with css, js and media folders.
// To have this structure working with relative paths, we have to use custom options.
const extractTextPluginOptions = shouldUseRelativeAssetPaths
? // Making sure that the publicPath goes back to to build folder.
{publicPath: Array(cssFilename.split('/').length).join('.. / ')}
: {};
// This is the production configuration.
// It compiles slowly and is focused on producing a fast and minimal bundle.
// The development configuration is different and lives in a separate file.
module.exports = {
// Don't attempt to continue if there are any errors. bail: true, // We generate sourcemaps in production. This is slow but gives good results. // You can exclude the *.map files from the build during deployment. devtool: shouldUseSourceMap ? 'source-map' : false, // In production, we only want to load the polyfills and the app code. entry: { // We ship a few polyfills by default: // require.resolve('./polyfills'), // Include an alternative client for WebpackDevServer. A client's job is to
// connect to WebpackDevServer by a socket and get notified about changes.
// When you save a file, the client will either apply hot updates (in case
// of CSS changes), or refresh the page (in case of JS changes). When you
// make a syntax error, this client will display a syntax error overlay.
// Note: instead of the default WebpackDevServer client, we use a custom one
// to bring better experience for Create React App users. You can replace
// the line below with these two lines if you prefer the stock client:
// require.resolve('webpack-dev-server/client') + '? / ',
// require.resolve('webpack/hot/dev-server'),
// require.resolve('react-dev-utils/webpackHotDevClient'),
// Finally, this is your app's code: // paths.appIndexJs, // We include the app code last so that if there is a runtime error during // initialization, it doesn't blow up the WebpackDevServer client, and
// changing JS code would still trigger a refresh.
index: [
require.resolve('./polyfills'),
require.resolve('react-dev-utils/webpackHotDevClient'),
paths.appSrc + '/index.js',
],
login: [
require.resolve('./polyfills'),
require.resolve('react-dev-utils/webpackHotDevClient'),
paths.appSrc + '/login.js',
],
register: [
require.resolve('./polyfills'),
require.resolve('react-dev-utils/webpackHotDevClient'),
paths.appSrc + '/register.js',
],
main: [
require.resolve('./polyfills'),
require.resolve('react-dev-utils/webpackHotDevClient'),
paths.appSrc + '/main.js',
]
},
output: {
// The build folder.
path: paths.appBuild,
// Generated JS file names (with nested folders).
// There will be one main bundle, and one file per asynchronous chunk.
// We don't currently advertise code splitting but Webpack supports it. filename: 'static/js/[name].[chunkhash:8].js', chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js', // We inferred the "public path" (such as / or /my-project) from homepage. publicPath: publicPath, // Point sourcemap entries to original disk location (format as URL on Windows) devtoolModuleFilenameTemplate: info => path .relative(paths.appSrc, info.absoluteResourcePath) .replace(/\\/g, '/'), }, resolve: { // This allows you to set a fallback for where Webpack should look for modules. // We placed these paths second because we want `node_modules` to "win" // if there are any conflicts. This matches Node resolution mechanism. // https://github.com/facebookincubator/create-react-app/issues/253 modules: ['node_modules', paths.appNodeModules].concat( // It is guaranteed to exist because we tweak it in `env.js` process.env.NODE_PATH.split(path.delimiter).filter(Boolean) ), // These are the reasonable defaults supported by the Node ecosystem. // We also include JSX as a common component filename extension to support // some tools, although we do not recommend using it, see: // https://github.com/facebookincubator/create-react-app/issues/290 // `web` extension prefixes have been added for better support // for React Native Web. extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'], alias: { // Support React Native Web // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/ 'react-native':'react-native-web', '@': paths.appSrc }, plugins: [ // Prevents users from importing files from outside of src/ (or node_modules/). // This often causes confusion because we only process files within src/ with babel. // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
// please link the files into your node_modules/ and let module-resolution kick in.
// Make sure your source files are compiled, as they will not be processed in any way.
new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
],
},
module: {
strictExportPresence: true,
rules: [
// TODO: Disable require.ensure as it's not a standard language feature. // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176. // { parser: { requireEnsure: false } }, // First, run the linter. // It's important to do this before Babel processes the JS.
{
test: /\.(js|jsx|mjs)$/,
enforce: 'pre',
use: [
{
options: {
formatter: eslintFormatter,
eslintPath: require.resolve('eslint'),
},
loader: require.resolve('eslint-loader'),
},
],
include: paths.appSrc,
},
{
// "oneOf" will traverse all following loaders until one will
// match the requirements. When no loader matches it will fall
// back to the "file" loader at the end of the loader list.
oneOf: [
// "url" loader works just like "file" loader but it also embeds
// assets smaller than specified size as data URLs to avoid requests.
{
test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
loader: require.resolve('url-loader'),
options: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]',
},
},
// Process JS with Babel.
{
test: /\.(js|jsx|mjs)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {
plugins: [
[
require.resolve('babel-plugin-named-asset-import'),
{
loaderMap: {
svg: {
ReactComponent: '@svgr/webpack? -prettier,-svgo! [path]',},},},], // load on demand ["import", {
"libraryName": "antd"."libraryDirectory": "es"."style": true // `style: true'less file will be loaded}],], compact:true,
},
},
// The notation here is somewhat confusing.
// "postcss" loader applies autoprefixer to our CSS.
// "css" loader resolves paths in CSS and adds assets as dependencies.
// "style" loader normally turns CSS into JS modules injecting <style>,
// but unlike in development configuration, we do something different.
// `ExtractTextPlugin` first applies the "postcss" and "css" loaders
// (second argument), then grabs the result CSS and puts it into a
// separate file in our build process. This way we actually ship
// a single CSS file in production instead of JS code injecting <style>
// tags. If you use code splitting, however, any async bundles will still
// use the "style" loader inside the async code so CSS from them won't be // in the main CSS file. { test: /\.(css|less)$/, loader: ExtractTextPlugin.extract( Object.assign( { fallback: { loader: require.resolve('style-loader'), options: { hmr: false, }, }, use: [ { loader: require.resolve('css-loader'), options: { importLoaders: 1, minimize: true, sourceMap: shouldUseSourceMap, }, }, { loader: require.resolve('postcss-loader'), options: { // Necessary for external CSS imports to work // https://github.com/facebookincubator/create-react-app/issues/2677 ident: 'postcss', plugins: () => [ require('postcss-flexbugs-fixes'), autoprefixer({ browsers: [ '> 1%', 'last 4 versions', 'Firefox ESR', 'not ie < 9', // React doesn't support IE8 anyway
],
flexbox: 'no-2009'Resolve.resolve.resolve.resolve.resolve ()'less-loader'// Inline JavaScript is not enabled. Is itset in your options?
javascriptEnabled: true,
modifyVars: {
'primary-color': '#ffa726'.'link-color': '#5e77ff'
}
},
}
],
},
extractTextPluginOptions
)
),
// Note: this won't work without `new ExtractTextPlugin()` in `plugins`. }, // "file" loader makes sure assets end up in the `build` folder. // When you `import` an asset, you get its filename. // This loader doesn't use a "test" so it will catch all modules
// that fall through the other loaders.
{
loader: require.resolve('file-loader'),
// Exclude `js` files to keep "css" loader working as it injects
// it's runtime that would otherwise processed through "file" loader. // Also exclude `html` and `json` extensions so they get processed // by webpacks internal loaders. exclude: [/\.(js|jsx|mjs)$/, /\.html$/, /\.json$/], options: { name: 'static/media/[name].[hash:8].[ext]', }, }, // ** STOP ** Are you adding a new loader? // Make sure to add the new loader(s) before the "file" loader. ], }, ], }, plugins: [ // Makes some environment variables available in index.html. // The public URL is available as %PUBLIC_URL% in index.html, e.g.: //
// In production, it will be an empty string unless you specify "homepage" // in `package.json`, in which case it will be the pathname of that URL. new InterpolateHtmlPlugin(env.raw), new BundleAnalyzerPlugin(), // Generates an `index.html` file with the index.html', chunks: ['index'], minify: { removeComments: true, collapseWhitespace: true, removeRedundantAttributes: true, useShortDoctype: true, removeEmptyAttributes: true, removeStyleLinkTypeAttributes: true, keepClosingSlash: true, minifyJS: true, minifyCSS: true, minifyURLs: true, }, }), new HtmlWebpackPlugin({ inject: true, template: paths.loginHtml, filename: 'login.html', chunks: ['login'], minify: { removeComments: true, collapseWhitespace: true, removeRedundantAttributes: true, useShortDoctype: true, removeEmptyAttributes: true, removeStyleLinkTypeAttributes: true, keepClosingSlash: true, minifyJS: true, minifyCSS: true, minifyURLs: true, }, }), new HtmlWebpackPlugin({ inject: true, template: paths.registerHtml, filename: 'register.html', chunks: ['register'], minify: { removeComments: true, collapseWhitespace: true, removeRedundantAttributes: true, useShortDoctype: true, removeEmptyAttributes: true, removeStyleLinkTypeAttributes: true, keepClosingSlash: true, minifyJS: true, minifyCSS: true, minifyURLs: true, }, }), new HtmlWebpackPlugin({ inject: true, template: paths.mainHtml, filename: 'main.html', chunks: ['main'], minify: { removeComments: true, collapseWhitespace: true, removeRedundantAttributes: true, useShortDoctype: true, removeEmptyAttributes: true, removeStyleLinkTypeAttributes: true, keepClosingSlash: true, minifyJS: true, minifyCSS: true, minifyURLs: true, }, }), // new webpack.DllReferencePlugin({ // context: '.', // manifest:require('./build/polyfill.manifest.json'), // }), // Makes some environment variables available to the JS code, for example: // if (process.env.NODE_ENV === 'production') {... }. See `./env.js`. // It is absolutely essential that NODE_ENV was set to production here. // Otherwise React will be compiled in the very slow development mode. new webpack.DefinePlugin(env.stringified), // Minify the code. new webpack.optimize.UglifyJsPlugin({ compress: { warnings: false, // Disabled because of an issue with Uglify breaking seemingly valid code: // https://github.com/facebookincubator/create-react-app/issues/2376 // Pending further investigation: // https://github.com/mishoo/UglifyJS2/issues/2011 comparisons: false, }, mangle: { safari10: true, }, output: { comments: false, // Turned on because emoji and regex is not minified properly using default // https://github.com/facebookincubator/create-react-app/issues/2488 ascii_only: true, }, sourceMap: shouldUseSourceMap, }), // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
new ExtractTextPlugin({
filename: cssFilename,
}),
// Generate a manifest file which contains a mapping of all asset filenames
// to their corresponding output file so that tools can pick it up without
// having to parse `index.html`.
new ManifestPlugin({
fileName: 'asset-manifest.json',
}),
// Generate a service worker script that will precache, and keep up to date,
// the HTML & assets that are part of the Webpack build.
new SWPrecacheWebpackPlugin({
// By default, a cache-busting query parameter is appended to requests
// used to populate the caches, to ensure the responses are fresh.
// If a URL is already hashed by Webpack, then there is no concern
// about it being stale, and the cache-busting can be skipped.
dontCacheBustUrlsMatching: /\.\w{8}\./,
filename: 'service-worker.js',
logger(message) {
if (message.indexOf('Total precache size is') === 0) {
// This message occurs for every build and is a bit too noisy.
return;
}
if (message.indexOf('Skipping static resource') === 0) {
// This message obscures real errors so we ignore it.
// https://github.com/facebookincubator/create-react-app/issues/2612
return;
}
console.log(message);
},
minify: true,
// For unknown URLs, fallback to the index page
navigateFallback: publicUrl + '/index.html',
// Ignores URLs starting from /__ (useful for Firebase):
// https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
navigateFallbackWhitelist: [/^(?!\/__).*/],
// Don't precache sourcemaps (they're large) and build asset manifest: staticFileGlobsIgnorePatterns: [/\.map$/, /asset-manifest\.json$/], }), // Moment.js is an extremely popular library that bundles large locale files // by default due to how Webpack interprets its code. This is a practical // solution that requires the user to opt into importing specific locales. // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack // You can remove thisif you don't use Moment.js: new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/), ], // Some libraries import Node modules but don't use them in the browser.
// Tell Webpack to provide empty mocks for them so importing them works.
node: {
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty',}};Copy the codepaths.js
'use strict';
const path = require('path');
const fs = require('fs');
const url = require('url');
// Make sure any symlinks inthe project folder are resolved: // https://github.com/facebookincubator/create-react-app/issues/637 const appDirectory = fs.realpathSync(process.cwd()); const resolveApp = relativePath => path.resolve(appDirectory, relativePath); const envPublicUrl = process.env.PUBLIC_URL;function ensureSlash(path, needsSlash) {
const hasSlash = path.endsWith('/');
if(hasSlash && ! needsSlash) {return path.substr(path, path.length - 1);
} else if(! hasSlash && needsSlash) {return `${path}/ `; }else {
return path;
}
}
const getPublicUrl = appPackageJson =>
envPublicUrl || require(appPackageJson).homepage;
// 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.
function getServedPath(appPackageJson) {
const publicUrl = getPublicUrl(appPackageJson);
const servedUrl =
envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/');
return ensureSlash(servedUrl, true);
}
// config after eject: we're in ./config/ module.exports = { dotenv: resolveApp('.env'), appBuild: resolveApp('build'), appPublic: resolveApp('public'), appHtml: resolveApp('public/index.html'), loginHtml: resolveApp('public/login.html'), registerHtml: resolveApp('public/register.html'), mainHtml: resolveApp('public/main.html'), appIndexJs: resolveApp('src/index.js'), appPackageJson: resolveApp('package.json'), appSrc: resolveApp('src'), yarnLockFile: resolveApp('yarn.lock'), testsSetup: resolveApp('src/setupTests.js'), appNodeModules: resolveApp('node_modules'), publicUrl: getPublicUrl(resolveApp('package.json')), servedPath: getServedPath(resolveApp('package.json'))};Copy the code