文章引用自:https://segmentfault.com/a/1190000010162614

 

使用create-react-app 创建的项目默认不支持less,以下增加less配置的步骤

暴露配置文件

create-react-app生成的项目文,看不到webpack相关的配置文件,需要先暴露出来,使用如下命令即可:

npm run eject

安装less-loader 和 less

npm install less-loader less --save-dev

修改webpack配置

修改 webpack.config.dev.js 和 webpack.config-prod.js 配置文件

改动1:

/\.css$/ 改为 /\.(css|less)$/,, 修改后如下:

exclude: [
  /\.html$/,
  /\.(js|jsx)$/,
  /\.(css|less)$/,
  /\.json$/,
  /\.bmp$/,
  /\.gif$/,
  /\.jpe?g$/,
  /\.png$/,
],

改动2:

  • test: /\.css$/ 改为 /\.(css|less)$/
  • test: /\.css$/ 的 use 数组配置增加 less-loader

修改后如下:

{
  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
    }
  ],
},