webpack.config.js

const path = require('path');
const CopyPlugin = require('copy-webpack-plugin');

const config = {
	mode: 'development',
	entry: {
		epubreader: './src/main.js'
	},
	output: {
		path: path.resolve(__dirname, 'dist'),
		filename: 'js/[name].js',
		sourceMapFilename: 'js/[name].js.map'
	},
	devtool: 'source-map',
	optimization: {
		minimize: false
	},
	devServer: {
		static: {
			directory: path.join(__dirname, 'dist')
		},
		compress: true,
		port: 8080
	},
	plugins: [
		new CopyPlugin({
			patterns: [
				{
					from: 'node_modules/jszip/dist/jszip.min.js',
					to: 'js/libs/jszip.min.js',
					toType: 'file',
					force: true
				},
				{
					from: 'node_modules/js-md5/build/md5.min.js',
					to: 'js/libs/md5.min.js',
					toType: 'file',
					force: true
				},
				{
					from: 'node_modules/epubjs/dist/epub.min.js',
					to: 'js/libs/epub.min.js',
					toType: 'file',
					force: true
				},
			],
			options: {
				concurrency: 100,
			},
		}),
	],
	performance: {
		hints: false
	}
};

module.exports = (env, args) => {

	if (args.optimizationMinimize) {
		config.output.filename = 'js/[name].min.js';
	}

	return config;
};