webpack.config.js

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

module.exports = {
  entry: {
    popup: './src/popup/popup.tsx',
    background: './src/background.ts',
    injectedScriptStoreUpdates: './src/content/injectedScriptStoreUpdates.ts',
    content: './src/content/content.ts',
    options: './src/options/options.tsx',
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].js',
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, 'css-loader'],
      },
      {
        test: /\.(png|jpg|jpeg|gif|svg)$/i,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: '[name].[ext]',
              outputPath: 'assets',
              publicPath: '/dist/assets',
              esModule: false,
            }
          }
        ]
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './src/popup/popup.html',
      filename: 'popup.html',
      chunks: ['popup'],
    }),
    new HtmlWebpackPlugin({
      template: './src/options/options.html',
      filename: 'options.html',
      chunks: ['options'],
    }),
    new MiniCssExtractPlugin({
      filename: '[name].css',
      chunkFilename: '[id].css',
    }),
    new webpack.DefinePlugin({
      __FIREBASE_ENV__: JSON.stringify(process.env.FIREBASE_ENV || 'dev')
    })
  ],
};