webpack.common.js

import path from 'node:path';
import { fileURLToPath } from 'node:url';
import CopyPlugin from 'copy-webpack-plugin';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

export default {
  entry: {
    content: './src/content/index.tsx',
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        use: [
          'style-loader',
          {
            loader: 'css-loader',
            options: {
              importLoaders: 1,
            },
          },
          'postcss-loader',
        ],
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
  },
  output: {
    filename: '[name]/index.js',
    path: path.resolve(__dirname, 'dist'),
    clean: true,
  },
  plugins: [
    new CopyPlugin({
      patterns: [
        { from: 'public/manifest.json', to: 'manifest.json' },
        { from: 'public', to: '.' },
      ],
    }),
  ],
};