Spookie/webpack.config.js

const Encore = require('@symfony/webpack-encore');
const path = require("path");
const ManifestPlugin = require('webpack-manifest-plugin')

if (!Encore.isRuntimeEnvironmentConfigured()) {
    Encore.configureRuntimeEnvironment(process.env.NODE_ENV || 'dev');
}

Encore
    .setOutputPath('public/build/')
	.setPublicPath('/build')
	.copyFiles({
		from: "./assets/images",
		to: "images/[path][name].[ext]"
	})
	/*
	.copyFiles([
		{from: './node_modules/ckeditor4/', to: 'ckeditor/[path][name].[ext]', pattern: /\.(js|css)$/, includeSubdirectories: false},
		{from: './node_modules/ckeditor4/adapters', to: 'ckeditor/adapters/[path][name].[ext]'},
		{from: './node_modules/ckeditor4/lang', to: 'ckeditor/lang/[path][name].[ext]'},
		{from: './node_modules/ckeditor4/plugins', to: 'ckeditor/plugins/[path][name].[ext]'},
		{from: './node_modules/ckeditor4/skins', to: 'ckeditor/skins/[path][name].[ext]'},
		{from: './node_modules/ckeditor4/vendor', to: 'ckeditor/vendor/[path][name].[ext]'}
	])
	*/
	

    .addEntry('app', './assets/js/app.js')
    .splitEntryChunks()

    // will require an extra script tag for runtime.js
    // but, you probably want this, unless you're building a single-page app
    .enableSingleRuntimeChunk()

    .cleanupOutputBeforeBuild()
    .enableBuildNotifications()
    .enableSourceMaps(!Encore.isProduction())
    .enableVersioning(Encore.isProduction())

    .configureBabel((config) => {
        config.plugins.push('@babel/plugin-proposal-class-properties');
    })

    // enables @babel/preset-env polyfills
    .configureBabelPresetEnv((config) => {
        config.useBuiltIns = 'usage';
        config.corejs = 3;
    })
	
	.addAliases({
		'@': path.resolve(__dirname, 'assets', 'js'),
		styles: path.resolve(__dirname, 'assets', 'styles'),
	})
	.enableSassLoader()
	.enableVueLoader()

    .autoProvidejQuery()
;

module.exports = Encore.getWebpackConfig();