Huge memory footprint with Typescript and webpack

[evkostadinov]

After the initial setup and first test implemented I've noticed that the VUs are consuming huge amount of memory (17-20MB per each), while the output files in dist/ are around 300-500KB. Initially I thought it was due to the node_modules being packed , but I did cut those and the memory consumption stays the same. My webpack config below:

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const CopyPlugin = require('copy-webpack-plugin');
const GlobEntries = require('webpack-glob-entries');

module.exports = {
  mode: 'production',
  entry: GlobEntries('./tests/*test*.ts'), // Generates multiple entry for each test
  output: {
    path: path.join(__dirname, 'dist'),
    libraryTarget: 'commonjs',
    filename: '[name].js',
  },
  resolve: {
    extensions: ['.ts', '.js'],
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
    ],
  },
  target: 'node',
  externals: /^(k6|https?\:\/\/)(\/.*)?/,
  // Generate map files for compiled scripts
  devtool: false,
  stats: {
    colors: true,
  },
  plugins: [
    new CleanWebpackPlugin(),
    // Copy assets to the destination folder
    // see `src/post-file-test.ts` for an test example using an asset
    new CopyPlugin({
      patterns: [{ 
        from: path.resolve(__dirname, 'assets'), 
        noErrorOnMissing: true 
      }],
    }),
  ],
  optimization: {
    minimize: true,
    splitChunks: {
      cacheGroups: {
        graphql: {
          test: /[\\/]deps[\\/]/,
          name: 'deps',
          chunks: 'all',
        }
      }
    }
  },
};