完整配置 | howcode

# 开发环境

https://www.bilibili.com/video/BV1e7411j7T5?p=18

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

const CommonCssLoader = [
  MiniCssExtractPlugin.loader,
  {
    loader: "css-loader",
    options: { importLoaders: 1 },
  },
  {
    loader: "postcss-loader",
    options: {
      postcssOptions: {
        plugins: [["postcss-preset-env"]],
      },
    },
  },
];

process.env.NODE_ENV = "development";

module.exports = {
  entry: "./assets/js/main.js",
  output: {
    filename: "js/app.js",
    path: path.resolve(__dirname, "dist"),
  },
  module: {
    rules: [
      {
        oneOf: [
          {
            // 处理 css 资源
            test: /\.css$/i,
            use: [...CommonCssLoader],
          },
          {
            // 处理 scss 资源
            test: /\.s[ac]ss$/i,
            use: [...CommonCssLoader, "sass-loader"],
          },
          {
            // 处理图片资源
            test: /\.(jpg|jpeg|png|gif)$/i,
            loader: "url-loader",
            options: {
              limit: 8 * 1024,
              name: "[hash:12].[ext]",
              esModule: false,
              outputPath: "images",
            },
          },
          {
            // 处理 html 中的图片资源
            test: /\.html$/i,
            loader: "html-loader",
          },
        ],
      },
    ],
  },
  plugins: [
    // 处理 html 资源
    new HtmlWebpackPlugin({
      template: "./index.html",
      minify: {
        collapseWhitespace: true,
        removeComments: true,
      },
    }),
    new MiniCssExtractPlugin({
      // 对输出结果重命名
      filename: "css/app.css",
    }),
  ],
  mode: "development",
  devServer: {
    static: {
      directory: path.join(__dirname, "build"),
    },
    compress: true,
    port: 3000,
    liveReload: true,
    watchFiles: {
      paths: ["./assets/*/*", "./*.html"],
      options: {
        usePolling: false,
      },
    },
    open: true,
    hot: true,
  },
  devtool: "source-map",
};

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# 生产环境

// 生产环境
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

const CommonCssLoader = [
  MiniCssExtractPlugin.loader,
  {
    loader: "css-loader",
    options: { importLoaders: 1 },
  },
  {
    loader: "postcss-loader",
    options: {
      postcssOptions: {
        plugins: [["postcss-preset-env"]],
      },
    },
  },
];

// process.env.NODE_ENV = 'development'

module.exports = {
  entry: "./assets/js/main.js",
  output: {
    filename: "js/app.js",
    path: path.resolve(__dirname, "dist"),
  },
  module: {
    rules: [
      {
        // 处理 css 资源
        test: /\.css$/i,
        use: [...CommonCssLoader],
      },
      {
        // 处理 scss 资源
        test: /\.s[ac]ss$/i,
        use: [...CommonCssLoader, "sass-loader"],
      },
      {
        // 处理图片资源
        test: /\.(jpg|jpeg|png|gif)$/i,
        loader: "url-loader",
        options: {
          limit: 8 * 1024,
          name: "[hash:12].[ext]",
          esModule: false,
          outputPath: "images",
        },
      },
      {
        // 处理 html 中的图片资源
        test: /\.html$/i,
        loader: "html-loader",
      },
    ],
  },
  plugins: [
    // 处理 html 资源
    new HtmlWebpackPlugin({
      template: "./index.html",
      minify: {
        collapseWhitespace: true,
        removeComments: true,
      },
    }),
    new MiniCssExtractPlugin({
      // 对输出结果重命名
      filename: "css/app.css",
    }),
  ],
  mode: "production",
};

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