webpack.config.js

const webpack = require('webpack');
const ejs = require('ejs');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CopyPlugin = require('copy-webpack-plugin');
const ExtensionReloader = require('webpack-extension-reloader');
const { VueLoaderPlugin } = require('vue-loader');
const { version } = require('./package.json');
const path = require('path');

const resolve = dir => path.resolve(__dirname, dir);

const config = {
  mode: process.env.NODE_ENV,
  context: resolve('src'),
  entry: {
    background: './background.js',
    'popup/popup': './popup/popup.js',
  },
  output: {
    path: resolve('dist'),
    filename: '[name].js',
  },
  resolve: {
    extensions: ['.js', '.vue'],
    alias: {
      '@': resolve('src'), // 这样配置后 @ 可以指向 src 目录
    },
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loaders: 'vue-loader',
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, 'css-loader'],
      },
      {
        test: /\.s(c|a)ss$/,
        use: [
          'vue-style-loader',
          'css-loader',
          {
            loader: 'sass-loader',
            // Requires sass-loader@^8.0.0
            options: {
              implementation: require('sass'),
              sassOptions: {
                fiber: require('fibers'),
                indentedSyntax: true, // optional
              },
            },
          },
        ],
      },
      {
        test: /\.(png|jpg|jpeg|gif|svg|ico)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]',
          outputPath: 'images',
          emitFile: false,
        },
      },
      {
        test: /\.(eot|woff2?|ttf|svg)$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              name: '[name]-[hash:5].min.[ext]',
              limit: 5000, // fonts file size <= 5KB, use 'base64'; else, output svg file
              publicPath: 'fonts/',
              outputPath: 'popup/fonts/',
            },
          },
        ],
      },
      {
        test: /\.pug$/,
        loader: 'pug-plain-loader',
      },
    ],
  },
  plugins: [
    new webpack.DefinePlugin({
      global: 'window',
    }),
    new VueLoaderPlugin(),
    new MiniCssExtractPlugin({
      filename: '[name].css',
    }),
    new CopyPlugin([
      { from: 'icons', to: 'icons', ignore: ['icon.xcf'] },
      { from: 'popup/popup.html', to: 'popup/popup.html', transform: transformHtml },
      { from: 'content.js', to: 'content.js' },
      {
        from: 'manifest.json',
        to: 'manifest.json',
        transform: content => {
          const jsonContent = JSON.parse(content);
          jsonContent.version = version;

          if (config.mode === 'development') {
            jsonContent.content_security_policy = "script-src 'self' 'unsafe-eval'; object-src 'self'";
          }

          return JSON.stringify(jsonContent, null, 2);
        },
      },
    ]),
  ],
};

if (config.mode === 'production') {
  config.plugins = (config.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"',
      },
    }),
  ]);
}

if (process.env.HMR === 'true') {
  config.plugins = (config.plugins || []).concat([
    new ExtensionReloader({
      manifest: resolve('src/manifest.json'),
    }),
  ]);
}

function transformHtml(content) {
  return ejs.render(content.toString(), {
    ...process.env,
  });
}

module.exports = config;