webpack.config.dist.js

var webpack = require("webpack");
var path = require("path");
var srcPath = path.join(__dirname, "src");
const TerserPlugin = require("terser-webpack-plugin");
const { BugsnagSourceMapUploaderPlugin } = require("webpack-bugsnag-plugins");

function getPlugins(appEnv, env) {
  const plugins = [
    new webpack.NamedModulesPlugin()
  ];

  if (appEnv.BUGSNAG_API_KEY) {
    plugins.push(new BugsnagSourceMapUploaderPlugin({
      apiKey: appEnv.BUGSNAG_API_KEY,
      publicPath: appEnv.PUBLIC_ASSET_PATH,
      releaseStage: appEnv.ENVIRONMENT,
      appVersion: appEnv.SHIP_CLUSTER_BUILD_VERSION,
      overwrite: true
    }));
  }

  return plugins;
}

module.exports = (env) => {
  var appEnv = require("./env/" + (env || "dev") + ".js");

  return {
    entry: [
      "./src/index.jsx"
    ],

    module: {
      rules: [
        {
          test: /\.(js|jsx)$/,
          include: srcPath,
          exclude: /node_modules/,
          enforce: "pre",
          loaders: ["babel-loader"],
        },
      ],
    },

    plugins: getPlugins(appEnv, env),

    devtool: "hidden-source-map",

    optimization: {
      minimizer: [new TerserPlugin({
        terserOptions: {
          warnings: false,
          output: {
            comments: false,
          }
        },
        sourceMap: true,
        parallel: true
      })],
    },

    stats: {
      colors: true,
      reasons: false
    }
  }
}