webpack.config.js

/* eslint-disable */
'use strict'

const path = require('path')
const TerserPlugin = require('terser-webpack-plugin')
const isProduction = process.env.NODE_ENV === 'production'
const envName = isProduction ? 'production' : 'development'

module.exports = {
  bail: isProduction,
  mode: envName,
  devtool: isProduction ? 'source-map' : 'cheap-module-source-map',
  entry: [path.join(__dirname, `src`, 'index.ts')],
  output: {
    path: path.join(__dirname, `dist/`),
    filename: `erebos.swarm.${envName}.js`,
    sourceMapFilename: `erebos.swarm.${envName}.js.map`,
    library: ['Erebos', 'swarm'],
    libraryTarget: 'umd',
    devtoolModuleFilenameTemplate: info => {
      return path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')
    },
  },
  module: {
    rules: [
      {
        test: /\.(ts|js)$/,
        include: path.join(__dirname, `src/`),
        use: {
          loader: 'babel-loader',
        },
      },
    ],
  },
  resolve: {
    extensions: ['.ts', '.tsx', '.js', '.json'],
  },
  optimization: {
    minimize: isProduction,
    minimizer: [
      // This is only used in production mode
      new TerserPlugin({
        terserOptions: {
          parse: {
            // we want terser to parse ecma 8 code. However, we don't want it
            // to apply any minfication steps that turns valid ecma 5 code
            // into invalid ecma 5 code. This is why the 'compress' and 'output'
            // sections only apply transformations that are ecma 5 safe
            // https://github.com/facebook/create-react-app/pull/4234
            ecma: 8,
          },
          compress: {
            ecma: 5,
            warnings: false,
          },
          mangle: {
            safari10: true,
          },
          output: {
            ecma: 5,
            comments: false,
          },
        },
        // Use multi-process parallel running to improve the build speed
        // Default number of concurrent runs: os.cpus().length - 1
        parallel: true,
        // Enable file caching
        cache: true,
        sourceMap: true,
      }),
    ],
  },
  target: 'web',
  node: {
    console: false,
    global: true,
    process: true,
    Buffer: true,
  },
  performance: {
    hints: false,
  },
  stats: 'minimal',
}