import path from 'path'
import { Configuration, EnvironmentPlugin } from 'webpack'
import 'webpack-dev-server'
import TerserPlugin from 'terser-webpack-plugin'

const mode = process.env.NODE_ENV === 'production' ? 'production' : 'development'

const config: Configuration = {
  mode,
  entry: path.join(__dirname, 'src', 'index.ts'),
  output: {
    clean: true,
    filename: 'js/index.js'
  },
  devtool: mode === 'development' ? 'inline-source-map' : false,
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/
      }
    ]
  },
  devServer: {
    allowedHosts: 'all',
    open: true,
    port: 8100
  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, 'src')
    },
    extensions: ['.ts', '.tsx', '.js']
  },
  externals: {
    jquery: 'jQuery',
    clipboard: 'ClipboardJS'
  },
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        parallel: true,
        terserOptions: {
          mangle: true
        }
      })
    ]
  },
  plugins: [
    new EnvironmentPlugin(['npm_package_name', 'npm_package_version'])
  ]
}

export default config