webpack将css打包成单个css文件

1. 安装 mini-css-extrack-plugin

yarn add mini-css-extrack-plugin -D

• webpack.config.js 配置

2. plugin 配置

const MiniCssExtrackPlugin = require('mini-css-extrack-plugin');
{
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'css/index.css' // 打包后css文件名
    })
  ]
}

3. loader 配置

{
  module: {
    rules: {
      test: /\.css$/,
      use: ['style-loader', MiniCssExtrackPlugin.loader, 'css-loader']
    }
  }
}