• 在create-react-app使用less与antd按需加载


    使用antd按需加载

    使用react-app-rewired对 create-react-app 的默认配置进行自定义

    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.然后在项目根目录创建一个 config-overrides.js 用于修改默认配置。

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

    使用 babel-plugin-import

    babel-plugin-import 是一个用于按需加载组件代码和样式babel 插件(原理),现在我们尝试安装它并修改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,
                },
              },
    

    自定义主题

    • 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;
      };
    

    参考链接:https://ant.design/docs/react/use-with-create-react-app-cn

    使用less

    如果已经配置react-app-rewire-less,则无需再进行此操作

    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$/ 改为 /.(css|less)$/
    • test: /.css$/ 的 use 数组配置增加 less-loader
    {
      test: /.(css|less)$/,
      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,针对antd的css 单独写一条loader的规则,不开启 css modules。

    1. 使用 exclude 和 include 配置(https://segmentfault.com/q/1010000011223900),修改webpack.config.dev.js 和 webpack.config-prod.js 配置文件 (尽量不要使用less-loader 来处理css文件,在与antd一起使用时可能出现错误,单独写一条规则)
            {
                test: /.css$/,
                exclude: /node_modules|antd.css/,
                use: [
                  require.resolve('style-loader'),
                  {
                    loader: require.resolve('css-loader'),
                    options: {
                      importLoaders: 1,
                      modules: true,   // 新增对css modules的支持
                      localIdentName: '[name]__[local]__[hash:base64:5]',
                    },
                  },
                  {
                    loader: require.resolve('postcss-loader'),
                    options: {
                      // Necessary for external CSS imports to work
                      // https://github.com/facebookincubator/create-react-app/issues/2677
                      ident: 'postcss',
                      plugins: () => [
                        require('postcss-flexbugs-fixes'),
                        autoprefixer({
                          browsers: [
                            '>1%',
                            'last 4 versions',
                            'Firefox ESR',
                            'not ie < 9', // React doesn't support IE8 anyway
                          ],
                          flexbox: 'no-2009',
                        }),
                      ],
                    },
                  },
                ],
              },
              {
                test: /.less$/,
                exclude: /node_modules|antd.less/,
                use: [
                  require.resolve('style-loader'),
                  {
                    loader: require.resolve('css-loader'),
                    options: {
                      importLoaders: 1,
                      modules: true,   // 新增对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
                  },
                ],
              },
    
     


    作者:summer_味道制造
    链接:https://www.jianshu.com/p/3550f919c3a6
    來源:简书
    简书著作权归作者所有,任何形式的转载都请联系作者获得授权并注明出处。
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  • 原文地址:https://www.cnblogs.com/qqfontofweb/p/10003777.html
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