webpack.config.js

'use strict'

const path = require('path')
const TerserJSPlugin = require('terser-webpack-plugin')
const webpack = require('webpack')
const version = require('./package.json').version

const prod = process.env.NODE_ENV === 'production'

const filename = `dbots${process.env.VERSIONED ? `.${version}` : ''}${
  prod ? '.min' : ''
}.js`

module.exports = {
  entry: './src/index.ts',
  mode: prod ? 'production' : 'development',
  devtool: 'source-map',
  cache: false,
  output: {
    path: path.resolve('./webpack'),
    filename,
    library: 'dbots',
    libraryTarget: 'umd',
    sourceMapFilename: `./${filename}.map`
  },
  module: {
    rules: [
      { test: /\.md$/, loader: 'ignore-loader' },
      {
        test: /^package\.json$/,
        type: 'javascript/auto',
        use: {
          loader: 'json-filter-loader',
          options: {
            used: ['version']
          }
        }
      },
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/
      }
    ]
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js']
  },
  optimization: {
    minimizer: [
      new TerserJSPlugin({
        terserOptions: {
          mangle: { keep_classnames: true },
          compress: { keep_classnames: true },
          keep_classnames: true,
          output: { comments: false }
        }
      })
    ]
  },
  plugins: [new webpack.optimize.ModuleConcatenationPlugin()]
}