webpack5单入口配置，只保证配置能用

文件目录

  1. webpack5
  2. │  ├─src
  3. │  │  ├─index.html
  4. │  │  └─index.ts
  5. │  ├─package-lock.json
  6. │  ├─package.json
  7. │  ├─postcss.config.js
  8. │  ├─tsconfig.json
  9. │  ├─webpack.common.js
  10. │  ├─webpack.dev.js
  11. │  └─webpack.prod.js

依赖安装

# webpack 套装
npm i -D webpack webpack-cli html-webpack-plugin webpack-dev-server webpack-merge
# style 套装
npm i -D sass-loader node-sass style-loader css-loader postcss-loader autoprefixer mini-css-extract-plugin css-minimizer-webpack-plugin
# js 套装
npm i -D babel-loader @babel/core @babel/preset-env @babel/plugin-transform-runtime @babel/runtime
# 打包优化套装
npm i -D closure-webpack-plugin google-closure-compiler
# ts 套装
npm i -D typescript ts-loader

package.json

{
  "name": "webpack5",
  "version": "0.0.1",
  "description": "webpack5 demo",
  "main": "index.js",
  "scripts": {
    "dev": "webpack serve --config webpack.dev.js",
    "build": "webpack --config webpack.prod.js"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/core": "^7.13.10",
    "@babel/plugin-transform-runtime": "^7.13.10",
    "@babel/preset-env": "^7.13.10",
    "@babel/runtime": "^7.13.10",
    "autoprefixer": "^10.2.5",
    "babel-loader": "^8.2.2",
    "closure-webpack-plugin": "^2.5.0",
    "css-loader": "^5.1.3",
    "css-minimizer-webpack-plugin": "^1.3.0",
    "google-closure-compiler": "^20210302.0.0",
    "html-webpack-plugin": "^5.3.1",
    "mini-css-extract-plugin": "^1.3.9",
    "node-sass": "^5.0.0",
    "postcss-loader": "^5.2.0",
    "sass-loader": "^11.0.1",
    "style-loader": "^2.0.0",
    "ts-loader": "^8.0.18",
    "typescript": "^4.2.3",
    "webpack": "^5.26.1",
    "webpack-cli": "^4.5.0",
    "webpack-dev-server": "^3.11.2",
    "webpack-merge": "^5.7.3"
  }
}

配置相关

webpack.common.js

const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

const isProductionMode = process.env.NODE_ENV === 'production';
const resolve = (filepath) => {
  return path.resolve(__dirname, filepath);
};

module.exports = {
  entry: './src/index.ts',
  output: {
    filename: '[name].[hash:5].js',
    path: resolve('dist'),
    clean: true
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: [
              [
                '@babel/preset-env',
                {
                  targets: 'defaults'
                }
              ]
            ],
            plugins: ['@babel/plugin-transform-runtime']
          }
        }
      },
      {
        test: /\.scss$/,
        use: [
          isProductionMode
            ? MiniCssExtractPlugin.loader
            : 'style-loader',
          'css-loader',
          'postcss-loader',
          'sass-loader'
        ]
      },

      {
        test: /\.css$/,
        use: [
          isProductionMode
            ? MiniCssExtractPlugin.loader
            : 'style-loader',
          'css-loader',
          'postcss-loader'
        ]
      },
      // 资源，图片、字体等资源都可以用以下方式
      {
        test: /\.(png|jpeg|jpg|gif|svg)/i,
        type: 'asset/resource'
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: isProductionMode
        ? '[name].[contenthash].css'
        : '[name].css',
      chunkFilename: isProductionMode
        ? '[id].[contenthash].css'
        : '[id].css'
    }),

    new HtmlWebpackPlugin({
      title: '测试webpack5',
      template: resolve('./src/index.html')
    })
  ],
  optimization: {
    splitChunks: {
      chunks: 'all'
    }
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js']
  }
};

webpack.dev.js

const CommonConfig = require('./webpack.common');
const { merge } = require('webpack-merge');
const webpack = require('webpack');

module.exports = merge(CommonConfig, {
  mode: 'development',
  devtool: 'inline-source-map',
  devServer: {
    contentBase: './dist',
    hot: true
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin()
  ]
});

webpack.prod.js

const CommonConfig = require('./webpack.common');
const { merge } = require('webpack-merge');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const ClosurePlugin = require('closure-webpack-plugin');

module.exports = merge(CommonConfig, {
  mode: 'production',
  // devtool: 'source-map',
  optimization: {
    minimizer: [
      new CssMinimizerPlugin(),
      new ClosurePlugin({
        mode: 'STANDARD'
      })
    ]
  }
});

postcss.config.js

module.exports = {
  plugins: [
    require('autoprefixer')
  ]
};