语言►nodejs►库►webpack

webpack中的webpack-merge

本文作者: jsweibo

本文链接: https://jsweibo.github.io/2020/06/06/webpack%E4%B8%AD%E7%9A%84webpack-merge/

摘要

本文主要讲述了：

  1. 作用

正文

作用

合并 webpack 配置文件

示例：

learn_webpack/webpack.common.js

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const path = require('path');

module.exports = {
  context: __dirname,
  entry: {
    index: './src/index.js',
    about: './src/about.js',
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'js/[name].js',
  },
};

learn_webpack/webpack.dev.js

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const { merge } = require('webpack-merge');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ESLintWebpackPlugin = require('eslint-webpack-plugin');
const common = require('./webpack.common.js');

module.exports = merge(common, {
  mode: 'development',
  module: {
    rules: [
      {
        test: /\.html$/,
        exclude: /public/,
        use: [
          {
            loader: 'html-loader',
          },
        ],
      },
      {
        test: /\.(png|jpe?g|gif)$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 10240,
              outputPath: 'img',
            },
          },
        ],
      },
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader',
          },
        ],
      },
      {
        test: /\.css$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
            },
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
      {
        test: /\.s[a|c]ss$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 2,
            },
          },
          {
            loader: 'sass-loader',
            options: {
              implementation: require('sass'),
            },
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
      {
        test: /\.less$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 2,
            },
          },
          {
            loader: 'less-loader',
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
      {
        test: /\.styl$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 2,
            },
          },
          {
            loader: 'stylus-loader',
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'index',
      favicon: 'public/favicon.png',
      scriptLoading: 'defer',
      filename: 'index.html',
      template: 'public/index.html',
      chunks: ['index'],
    }),
    new HtmlWebpackPlugin({
      title: 'about',
      favicon: 'public/favicon.png',
      scriptLoading: 'defer',
      filename: 'about.html',
      template: 'public/about.html',
      chunks: ['about'],
    }),
    new ESLintWebpackPlugin(),
  ],
});

learn_webpack/webpack.prod.js

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const { merge } = require('webpack-merge');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ESLintWebpackPlugin = require('eslint-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const common = require('./webpack.common.js');

module.exports = merge(common, {
  mode: 'production',
  optimization: {
    splitChunks: {
      chunks: 'all',
    },
  },
  module: {
    rules: [
      {
        test: /\.html$/,
        exclude: /public/,
        use: [
          {
            loader: 'html-loader',
          },
        ],
      },
      {
        test: /\.(png|jpe?g|gif)$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 10240,
              outputPath: 'img',
            },
          },
        ],
      },
      {
        test: /\.m?js$/,
        exclude: /node_modules/,
        use: [
          {
            loader: 'babel-loader',
          },
        ],
      },
      {
        test: /\.css$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
            },
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
      {
        test: /\.s[a|c]ss$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 2,
            },
          },
          {
            loader: 'sass-loader',
            options: {
              implementation: require('sass'),
            },
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
      {
        test: /\.less$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 2,
            },
          },
          {
            loader: 'less-loader',
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
      {
        test: /\.styl$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
            options: {
              importLoaders: 2,
            },
          },
          {
            loader: 'stylus-loader',
          },
          {
            loader: 'postcss-loader',
          },
        ],
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      title: 'index',
      favicon: 'public/favicon.png',
      scriptLoading: 'defer',
      filename: 'index.html',
      template: 'public/index.html',
      chunks: ['index'],
    }),
    new HtmlWebpackPlugin({
      title: 'about',
      favicon: 'public/favicon.png',
      scriptLoading: 'defer',
      filename: 'about.html',
      template: 'public/about.html',
      chunks: ['about'],
    }),
    new ESLintWebpackPlugin(),
    new MiniCssExtractPlugin({
      filename: 'css/[name].css',
    }),
  ],
});

参考资料

本文作者: jsweibo

本文链接: https://jsweibo.github.io/2020/06/06/webpack%E4%B8%AD%E7%9A%84webpack-merge/

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