w1020/22.webpack/webpack.config.js

const path = require('path');
// node写法
module.exports = {
    mode: 'production',
    entry: "./src/index.js",
    // entry: ['./src/a.js','./src/index.js']
    // entry: {
    //     hi:'./src/a.js',
    //     hello:'./src/index.js'
    // }
    output: {
        // filename: '[name]-[id]-[hash].js',
        path: path.resolve(__dirname, 'dist'),
        clean: true,
    },
    module: {
        rules: [
            {
                test: /\.css$/i,
                use: ['style-loader', 'css-loader'],
            }, {
                test: /\.(png|svg|jpg|jpeg|gif)$/i,
                type: 'asset/resource',
            },
            {
      test: /\.m?js$/,
      exclude: /(node_modules|bower_components)/,
      use: {
        loader: 'babel-loader',
        options: {
          presets: ['@babel/preset-env'],
        },
      },
    },
        ]
    }
}