webpack-config-factory.ts

const path = require('path');

export type WebpackConfigFactoryOptions = {
  entrySrc: string
  buildPath: string
  libName: string
  libraryTarget: string
  debug?: boolean,
  externals?: string[]
  plugins?: unknown[]
}

export function createWebpackConfig (options: WebpackConfigFactoryOptions, excludePaths: string[] = []) {
  const libName = options.libName;

  const buildPath = path.resolve(options.buildPath);

  console.log('Generating config for library:', libName, 'with options:\n', options, '\n');
  console.log('Resolved build path:', buildPath);

  const baseConfig = {
    mode: options.debug ? 'development' : 'production',
    entry: options.entrySrc,
    externals: options.externals,
    output: {
      path: buildPath,
      publicPath: '/' + options.buildPath + '/',
      filename: libName + '.' + options.libraryTarget + '.js',
      library: libName,
      libraryTarget: options.libraryTarget,
      sourceMapFilename: '[file].map',
      globalObject: 'this'
    },
    resolve: {
      extensions: ['.ts', '.tsx', '.js', '.json', '.html', '.css'],
      fallback: {
        http: false,
        fs: false
      }
    },
    module: {
      rules: [
        {
          test: /\.ts?$/,
          loader: 'ts-loader'
        }
      ]
    },
    devtool: options.debug ? 'inline-source-map' : 'source-map',
    optimization: {
      minimize: !options.debug
    },
    plugins: options.plugins || [],
    watchOptions: {
      poll: 1000 // Check for changes every second
    }

  };

  return baseConfig;
}