holisticon/angularjs-common

/**
 * @author: @mreinhardt
 */

const helpers = require('./helpers');
const util = require('util');
const debugLog = util.debuglog('@holisticon/angularjs-common/webpack.prod');
const webpack = require('webpack');
const webpackMerge = require('webpack-merge'); // used to merge webpack configs
const commonConfig = require('./webpack.common.js'); // the settings that are common to prod and dev
const appConfig = helpers.getAppConfig();

/**
 * Webpack Plugins
 */
const ProvidePlugin = require('webpack/lib/ProvidePlugin');
const DefinePlugin = require('webpack/lib/DefinePlugin');
const NormalModuleReplacementPlugin = require('webpack/lib/NormalModuleReplacementPlugin');
const IgnorePlugin = require('webpack/lib/IgnorePlugin');
const UglifyJsPlugin = require('webpack/lib/optimize/UglifyJsPlugin');
const WebpackMd5Hash = require('webpack-md5-hash');

/**
 * Webpack Constants
 */
const ENV = process.env.ENV || process.env.NODE_ENV || 'production';
const HOST = process.env.HOST || 'localhost';
const PORT = process.env.PORT || 8080;
const METADATA = webpackMerge(commonConfig.metadata, {
  host: HOST,
  port: PORT,
  ENV: ENV,
  HMR: false
});

var config = webpackMerge(commonConfig, {


  /**
   * Developer tool to enhance debugging
   *
   * See: http://webpack.github.io/docs/configuration.html#devtool
   * See: https://github.com/webpack/docs/wiki/build-performance#sourcemaps
   */
  //devtool: 'source-map',

  /**
   * Options affecting the output of the compilation.
   *
   * See: http://webpack.github.io/docs/configuration.html#output
   */
  output: {

    /**
     * The output directory as absolute path (required).
     *
     * See: http://webpack.github.io/docs/configuration.html#output-path
     */
    path: appConfig.dist,

    /**
     * Specifies the name of each output file on disk.
     * IMPORTANT: You must not specify an absolute path here!
     *
     * See: http://webpack.github.io/docs/configuration.html#output-filename
     */
    filename: '[name].[chunkhash].bundle.js',

    /**
     * The filename of the SourceMaps for the JavaScript files.
     * They are inside the output.path directory.
     *
     * See: http://webpack.github.io/docs/configuration.html#output-sourcemapfilename
     */
    sourceMapFilename: '[name].[chunkhash].bundle.map',

    /**
     * The filename of non-entry chunks as relative path
     * inside the output.path directory.
     *
     * See: http://webpack.github.io/docs/configuration.html#output-chunkfilename
     */
    chunkFilename: '[id].[chunkhash].chunk.js'

  },

  /**
   * Add additional plugins to the compiler.
   *
   * See: http://webpack.github.io/docs/configuration.html#plugins
   */
  plugins: [

    /*
     * Plugin: OccurenceOrderPlugin
     * Description: Varies the distribution of the ids to get the smallest id length
     * for often used ids.
     *
     * See: https://webpack.github.io/docs/list-of-plugins.html#occurrenceorderplugin
     * See: https://github.com/webpack/docs/wiki/optimization#minimize
     */
    new webpack.optimize.OccurrenceOrderPlugin(true),
    /*
     * Plugin: CommonsChunkPlugin
     * Description: Shares common code between the pages.
     * It identifies common modules and put them into a commons chunk.
     *
     * See: https://webpack.github.io/docs/list-of-plugins.html#commonschunkplugin
     * See: https://github.com/webpack/docs/wiki/optimization#multi-page-app
     */
    new webpack.optimize.CommonsChunkPlugin(appConfig.chunks),
    /**
     * Plugin: WebpackMd5Hash
     * Description: Plugin to replace a standard webpack chunkhash with md5.
     *
     * See: https://www.npmjs.com/package/webpack-md5-hash
     */
    new WebpackMd5Hash(),

    /**
     * Plugin: DefinePlugin
     * Description: Define free variables.
     * Useful for having development builds with debug logging or adding global constants.
     *
     * Environment helpers
     *
     * See: https://webpack.github.io/docs/list-of-plugins.html#defineplugin
     */
    // NOTE: when adding more properties make sure you include them in custom-typings.d.ts
    new DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
      metadata: METADATA
    }),

    /**
     * Plugin: UglifyJsPlugin
     * Description: Minimize all JavaScript output of chunks.
     * Loaders are switched into minimizing mode.
     *
     * See: https://webpack.github.io/docs/list-of-plugins.html#uglifyjsplugin
     */
    // NOTE: To debug prod builds uncomment //debug lines and comment //prod lines
    new UglifyJsPlugin({
      // beautify: true, //debug
      //mangle: false, //debug
      // dead_code: false, //debug
      // unused: false, //debug
      // deadCode: false, //debug
      // compress: {
      //   screw_ie8: true,
      //   keep_fnames: true,
      //   drop_debugger: false,
      //   dead_code: false,
      //   unused: false
      // }, // debug
      // comments: true, //debug
      sourceMap: false, //prod
      beautify: false, //prod
      mangle: false, //prod
      compress: {
        screw_ie8: true
      }, //prod
      comments: false //prod
    })
  ],

  /*
   * Include polyfills or mocks for various node stuff
   * Description: Node configuration
   *
   * See: https://webpack.github.io/docs/configuration.html#node
   */
  node: {
    crypto: 'empty',
    process: true,
    module: false,
    clearImmediate: false,
    setImmediate: false
  }

});

debugLog('Using following webpack prod config:', config);
module.exports = config;