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詳解在create-react-app使用less與antd按需加載

2019-11-19 12:23:13
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使用antd按需加載

使用react-app-rewired對 create-react-app 的默認配置進行自定義

1、yarn add react-app-rewired --dev

/* package.json */"scripts": {-  "start": "react-scripts start",+  "start": "react-app-rewired start",-  "build": "react-scripts build",+  "build": "react-app-rewired build",-  "test": "react-scripts test --env=jsdom",+  "test": "react-app-rewired test --env=jsdom",}

2.然后在項目根目錄創建一個 config-overrides.js 用于修改默認配置。

module.exports = function override(config, env) { // do stuff with the webpack config... return config;};

使用 babel-plugin-import

babel-plugin-import 是一個用于按需加載組件代碼和樣式babel 插件(原理),現在我們嘗試安裝它并修改config-overrides.js 文件

1.yarn add babel-plugin-import --dev

+ const { injectBabelPlugin } = require('react-app-rewired'); module.exports = function override(config, env) {+  config = injectBabelPlugin(['import', { libraryName: 'antd', libraryDirectory: 'es', style: 'css' }], config);  return config; };

或者也可修改

{      test: //.(js|jsx|mjs)$/,      include: paths.appSrc,      loader: require.resolve('babel-loader'),      options: {       plugins: [        ['import', { libraryName: 'antd', 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,      },     },

自定義主題

yarn add react-app-rewire-less --dev

 const { injectBabelPlugin } = require('react-app-rewired');+ const rewireLess = require('react-app-rewire-less'); module.exports = function override(config, env) {-  config = injectBabelPlugin(['import', { libraryName: 'antd', style: 'css' }], config);+  config = injectBabelPlugin(['import', { libraryName: 'antd', style: true }], config);+  config = rewireLess.withLoaderOptions({+   modifyVars: { "@primary-color": "#1DA57A" },+  })(config, env);  return config; };

參考鏈接:https://ant.design/docs/react/use-with-create-react-app-cn

使用less

如果已經配置react-app-rewire-less,則無需再進行此操作

1.npm install less-loader less --save-dev
2.修改node_modules/react_script/config下的webpack.config.dev.js 和 webpack.config-prod.js 配置文件

  • test: /.css$/ 改為 /.(css|less)$/
  • test: /.css$/ 的 use 數組配置增加 less-loader
{ test: //.(css|less)$/, use: [  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',     }),    ],   },  },  {   loader: require.resolve('less-loader') // compiles Less to CSS  } ],},

使用css Module

antd 和 css modules 不能混用,針對antd的css 單獨寫一條loader的規則,不開啟 css modules。

使用 exclude 和 include 配置,修改webpack.config.dev.js 和 webpack.config-prod.js 配置文件 (盡量不要使用less-loader 來處理css文件,在與antd一起使用時可能出現錯誤,單獨寫一條規則)

    {      test: //.css$/,      exclude: /node_modules|antd/.css/,      use: [       require.resolve('style-loader'),       {        loader: require.resolve('css-loader'),        options: {         importLoaders: 1,         modules: true,  // 新增對css modules的支持         localIdentName: '[name]__[local]__[hash:base64:5]',        },       },       {        loader: require.resolve('postcss-loader'),        options: {         // Necessary for external CSS imports to work         // https://github.com/facebookincubator/create-react-app/issues/2677         ident: 'postcss',         plugins: () => [          require('postcss-flexbugs-fixes'),          autoprefixer({           browsers: [            '>1%',            'last 4 versions',            'Firefox ESR',            'not ie < 9', // React doesn't support IE8 anyway           ],           flexbox: 'no-2009',          }),         ],        },       },      ],     },     {      test: //.less$/,      exclude: /node_modules|antd/.less/,      use: [       require.resolve('style-loader'),       {        loader: require.resolve('css-loader'),        options: {         importLoaders: 1,         modules: true,  // 新增對css modules的支持         localIdentName: '[name]__[local]__[hash:base64:5]',        },       },       {        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',          }),         ],        },       },       {        loader: require.resolve('less-loader') // compiles Less to CSS       },      ],     },     {      test: //.(css)$/,      include: /node_modules|antd/.css/,      use: [       require.resolve('style-loader'),       {        loader: require.resolve('css-loader'),        options: {         importLoaders: 1,        },       },       {        loader: require.resolve('postcss-loader'),        options: {         // Necessary for external CSS imports to work         // https://github.com/facebookincubator/create-react-app/issues/2677         ident: 'postcss',         plugins: () => [          require('postcss-flexbugs-fixes'),          autoprefixer({           browsers: [            '>1%',            'last 4 versions',            'Firefox ESR',            'not ie < 9', // React doesn't support IE8 anyway           ],           flexbox: 'no-2009',          }),         ],        },       },      ],     },     {      test: //.(less)$/,      include: /node_modules|antd/.less/,      use: [       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',          }),         ],        },       },       {        loader: require.resolve('less-loader') // compiles Less to CSS       },      ],     },

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持武林網。

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