webpack.config.js

const path = require('path')
// const { EnvironmentPlugin } = require("webpack")
// const nodeExternals = require('webpack-node-externals')

module.exports = {
  entry: './src/index.ts',
  output: {
    filename: 'worker.js',
    path: path.join(__dirname, 'dist'),
  },
  target: 'webworker',
  devtool: 'cheap-module-source-map',
  mode: 'development',
  resolve: {
    extensions: ['.ts', '.tsx', '.js'],
  },
  // externalsPresets: { node: true },
  // externals: [nodeExternals()],
  optimization: {
    minimize: false,
  },
  module: {
    rules: [
      {
        test: /\.ts?$/,
        loader: 'ts-loader',
        options: {
          // transpileOnly is useful to skip typescript checks occasionally:
          // transpileOnly: true,
        },
      },
      {
        test: /\.ya?ml$/,
        type: 'json',
        use: 'yaml-loader'
      },
    ],
  },
}