Angular 2 + Webpack for production deployment

Question

I wanted to minimize all my js and CSS using webpack for my production deployment, and when I start working in development mode, it should be prefix, I am new to webpack and not sure how I do this work, below is my webpack configuration How can I change it to work separately for the development and production environment?

var webpack = require('webpack');
var path = require('path');

// Webpack Config
var webpackConfig = {
  entry: {
    'polyfills': './src/polyfills.browser.ts',
    'vendor':    './src/vendor.browser.ts',
    'main':       './src/main.browser.ts',
  },

  output: {
    path: './dist',
  },

  plugins: [
    new webpack.optimize.OccurenceOrderPlugin(true),
    new webpack.optimize.CommonsChunkPlugin({ name: ['main', 'vendor', 'polyfills'], minChunks: Infinity }),
  ],

  module: {
    loaders: [
      // .ts files for TypeScript
      { test: /\.ts$/, loaders: ['awesome-typescript-loader', 'angular2-template-loader'] },
      { test: /\.css$/, loaders: ['to-string-loader', 'css-loader'] },
      { test: /\.html$/, loader: 'raw-loader' },
      { test: /\.json$/, loader: 'json-loader' },
    ]
  }

};


// Our Webpack Defaults
var defaultConfig = {
  devtool: 'cheap-module-source-map',
  cache: true,
  debug: true,
  output: {
    filename: '[name].bundle.js',
    sourceMapFilename: '[name].map',
    chunkFilename: '[id].chunk.js'
  },

  module: {
    preLoaders: [
      {
        test: /\.js$/,
        loader: 'source-map-loader',
        exclude: [
          // these packages have problems with their sourcemaps
          path.join(__dirname, 'node_modules', 'rxjs'),
          path.join(__dirname, 'node_modules', '@angular2-material'),
          path.join(__dirname, 'node_modules', '@angular'),
        ]
      }
    ],
    noParse: [
      path.join(__dirname, 'node_modules', 'zone.js', 'dist'),
      path.join(__dirname, 'node_modules', 'angular2', 'bundles')
    ]
  },

  resolve: {
    root: [ path.join(__dirname, 'src') ],
    extensions: ['', '.ts', '.js', '.json']
  },

  devServer: {
    historyApiFallback: true,
    watchOptions: { aggregateTimeout: 300, poll: 1000 }
  },

  node: {
    global: 1,
    crypto: 'empty',
    module: 0,
    Buffer: 0,
    clearImmediate: 0,
    setImmediate: 0
  },
}

var webpackMerge = require('webpack-merge');
module.exports = webpackMerge(defaultConfig, webpackConfig);

So when I turn on anggular 2 enableProduction, the web package should also call production code and minimize JS and CSS

Answer 1

Set a different environment mode using webpack and webpack.DefinePlugin

, . angular2 webpack, , config, webpack.

• webpack.common.js
• webpack.dev.js
• webpack.prod.js

DefinePlugin

DefinePlugin , . . , , , ; , , . , DefinePlugin .

new webpack.DefinePlugin({
    PRODUCTION: JSON.stringify(true),
    VERSION: JSON.stringify("5fa3b9"),
    BROWSER_SUPPORTS_HTML5: true,
    TWO: "1+1",
    "typeof window": JSON.stringify("object")
})

, DefinePlugin, , ..

• , .
• , ( ).
• , .
• typeof , of.

, .

if (!PRODUCTION)
    console.log('Debug info')
if (PRODUCTION)
    console.log('Production log')

Webpack

Answer 2

, , , . config minimize, i.e. webpack --watch --minimize, :

...
var path = require('path');
var minimize = process.argv.indexOf('--minimize') !== -1;

...
...
...

if (minimize) {
  webpackConfig.plugins.push(new webpack.optimize.UglifyJsPlugin());
}
var webpackMerge = require('webpack-merge');
module.exports = webpackMerge(defaultConfig, webpackConfig);

Answer 3

webpack.config.production.js, webpack.config.js :

var environment = process.env.NODE_ENV? process.env.NODE_ENV: "local"; var envSpecificConfig = require ('./webpack.config.' + environment);

gulp .

, , webpack.config.js, webpack.config.production.js.

( webpack.config.js):

var path = require('path');
var webpack = require('webpack');
var merge = require('extendify')({ isDeep: true, arrays: 'concat' });
var environment = process.env.NODE_ENV ? process.env.NODE_ENV : "local";
var envSpecificConfig = require('./webpack.config.' + environment);

module.exports = merge({

...all your standard stuff you already have here

}, envSpecificConfig);

webpack.config.production.js

var webpack = require('webpack');
var path = require( 'path' );

module.exports = {
    plugins: [
        new webpack.optimize.UglifyJsPlugin({
            compress: { warnings: false },
            minimize: true,
            mangle: false // Due to https://github.com/angular/angular/issues/6678
        })
    ]
};

, , , .