feat: add uglify-js (#16)

* build(webpack): add uglify-js

* chore(package): add uglify-js to deps

* docs(readme): update readme

README.md

@@ -14,7 +14,7 @@ This repository holds the [TypeScript] source code and distributable bundle of *
 
 - [x] Ready-to-go build system using [Webpack] to work with [TypeScript].
 - [x] Managing the type definitions using [@types].
-- [ ] Minifying the production builds using `harmony` branch of [UglifyJs2].
+- [x] Minifying the production builds using [UglifyJS Webpack Plugin].
 - [x] Unit tests with **[Jest]**, including code coverage.
 - [x] Seamless integration with [CircleCI] continuous integration and delivery platform.
 - [x] Automatic deployment to [Azure Functions].
@@ -145,7 +145,7 @@ Copyright (c) 2017 [Burak Tasci]
 [TypeScript]: http://www.typescriptlang.org
 [Webpack]: http://webpack.github.io
 [@types]: https://www.npmjs.com/~types
-[UglifyJs2]: https://github.com/mishoo/UglifyJS2/tree/harmony
+[UglifyJS Webpack Plugin]: https://github.com/webpack-contrib/uglifyjs-webpack-plugin
 [Jest]: https://facebook.github.io/jest
 [CircleCI]: https://circleci.com
 [Azure Functions]: https://azure.microsoft.com/en-us/services/functions

package.json

@@ -42,6 +42,7 @@
     "cp-cli": "~1.1.0",
     "webpack": "~3.6.0",
     "awesome-typescript-loader": "~3.2.3",
+    "uglifyjs-webpack-plugin": "^1.0.0-beta.2",
     "copy-webpack-plugin": "~4.1.0",
     "jest": "~21.2.1",
     "jest-junit-reporter": "~1.1.0",

tools/build/webpack.prod.js

@@ -1,4 +1,5 @@
 const $ = require('./helpers');
+const uglifyJSPlugin = require('uglifyjs-webpack-plugin');
 const copyWebpackPlugin = require('copy-webpack-plugin');
 
 module.exports = {
@@ -21,6 +22,11 @@ module.exports = {
     ]
   },
   plugins: [
+    new uglifyJSPlugin({
+      uglifyOptions: {
+        ecma: 6
+      }
+    }),
     new copyWebpackPlugin([
       {
         from: 'src/host.json',