Our app webpack configuration

webpack.config.js

'use strict';

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

let config = {
  	entry: {
    	main: [
			'./_devapp/app.js',
			'./_devapp/css/app.scss'
    	]
  	},
  	output: {
		path: path.resolve(__dirname, 'assets', 'bundle'),
		filename: '[name].bundle.js'
	},
	resolve: {
        extensions: ['.js', '.jsx', '.json', '.ts', '.tsx']
    },
  	module: {
		rules: [
			{
				test: /\.(js|jsx|tsx|ts)$/,
				exclude:path.resolve(__dirname, 'node_modules'),
				use: {
				loader: 'babel-loader',
				options: {
					presets: [
							'@babel/preset-env',
							'@babel/preset-react',
							'@babel/preset-typescript'
						],
						plugins : [
							["@babel/plugin-proposal-decorators", { "legacy": true }],
							'@babel/plugin-syntax-dynamic-import',
							['@babel/plugin-proposal-class-properties', { "loose": true }]
						]
					}
				},
			},
			{
				test: /\.scss$/,
				use: ExtractTextPlugin.extract({
				fallback: 'style-loader',
				use: [
						{
							loader: 'css-loader',
						},
						'postcss-loader',
						'sass-loader'
					]
				})
			},
			{
				test: /.(png|woff(2)?|eot|ttf|svg|gif)(\?[a-z0-9=\.]+)?$/,
				use: [
				{
					loader: 'file-loader',
					options: {
						name: '../css/[hash].[ext]'
					}
				}
				]
			},
			{
				test : /\.css$/,
				use: ['style-loader', 'css-loader', 'postcss-loader']
			}
		]
	},
	externals: {
		myApp: 'myApp',
	},
  	plugins: [
		new ExtractTextPlugin(path.join('..', 'css', 'app.css')),
		new webpack.DefinePlugin({
			'__DEV__' : JSON.stringify(true),
			'__API_HOST__' : JSON.stringify('http://localhost/my-app/'),
		}),
	],
	  
};

if (process.env.NODE_ENV === 'production') {
  	config.plugins.push(
    	new webpack.optimize.UglifyJsPlugin({
			sourceMap: false,
			compress: {
				sequences: true,
				conditionals: true,
				booleans: true,
				if_return: true,
				join_vars: true,
				drop_console: true
			},
			output: {
				comments: false
			},
			minimize: true
    	})
  	);
}

module.exports = config;