webpack.config.js

const path = require( 'path' );

const webpack           = require( 'webpack' );
const ExtractTextPlugin = require( 'extract-text-webpack-plugin' );

const BUILD_DIR  = path.join( __dirname, 'dist' );
const APP_DIR    = path.join( __dirname, 'app' );
const VENDOR_DIR = path.join( __dirname, 'vendor' );

const env = process.env.NODE_ENV || 'development';

const config = {
	entry : [
		path.join( APP_DIR, 'index.js' ),
	],
	resolve : {
		extensions : [ '', '.js', '.jsx' ],
	},
	module : {
		loaders : [
			{
				test    : /\.jsx?$/,
				include : [ APP_DIR, VENDOR_DIR ],
				loaders : [ 'babel' ],
			},
		],
	},
	output : {
		path       : BUILD_DIR,
		publicPath : '/public/',
		filename   : 'bundle.js',
	},
	plugins : [
		new webpack.DefinePlugin( {
			'process.env.NODE_ENV' : JSON.stringify( env ),
		} ),
		new webpack.IgnorePlugin( /\.\/locale$/, /moment$/ ),
	],
	stats : {
		children : false,
	},
};

if ( process.env.NODE_ENV === 'production' ) {
	// UglifyJs: http://stackoverflow.com/a/35462011
	config.plugins.unshift(
		new webpack.LoaderOptionsPlugin( {
			minimize : true,
			debug    : false,
		} ),
		new webpack.optimize.UglifyJsPlugin( {
			compress : { warnings : false },
		} ),
		new ExtractTextPlugin( 'style.css' ),
		new webpack.NormalModuleReplacementPlugin(
			/^debug$/,
			path.join( __dirname, 'app', 'lib', 'debug-noop' )
		)
	);
	config.module.loaders.unshift( {
		test    : /\.scss$/,
		include : [ APP_DIR, VENDOR_DIR ],
		loader  : ExtractTextPlugin.extract( [ 'css', 'sass' ] ),
	} );
} else {
	config.devtool = 'eval';
	config.entry.unshift(
		'react-hot-loader/patch',
		'webpack-dev-server/client?/',
		'webpack/hot/only-dev-server'
	);
	config.module.loaders.unshift( {
		test    : /\.scss$/,
		include : [ APP_DIR, VENDOR_DIR ],
		loaders : [ 'style', 'css', 'sass' ],
	} );
	config.plugins.unshift(
		new webpack.LoaderOptionsPlugin( {
			minimize : false,
			debug    : true,
		} ),
		new webpack.HotModuleReplacementPlugin(),
		new webpack.NamedModulesPlugin()
	);
}

module.exports = config;