webpack（二）开发环境基本配置

const { resolve } = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
  entry: './src/js/index.js',
  output: {
    filename: 'js/built.js',
    path: resolve(__dirname, 'build')
  },
  module: {
    rules: [
      // 处理less资源
      {
        test: /\.less$/,
        use: ['style-loader', 'css-loader', 'less-loader']
      },
      // 处理css资源
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      // 处理图片资源
      {
        test: /\.(jpg|png|gif)$/,
        loader: 'url-loader',
        options: {
          limit: 8 * 1024,
          name: '[hash:10].[ext]',
          // 关闭es6模块化规范
          esModule: false,
          outputPath: 'imgs'
        }
      },
      // 处理html中的img元素
      {
        test: /\.html$/,
        loader: 'html-loader'
      },
      // 处理其他资源
      {
        exclude: /\.(html|js|css|less|jpg|png|gif)$/,
        loader: 'file-loader',
        options: {
          name: '[hash:10].[ext]',
          outputPath: 'media'
        }
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/index.html'
    })
  ],
  mode: 'development',
  devServer: {
    contentBase: resolve(__dirname, 'build'),
    port: '3000',
    open: true
  }
}