Twig Webpack Copy/Compile

twig-webpack.js

const Path = require('path');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const Twig = require('twig');

module.exports = {
	mode: 'development',
	entry: './src/app.js',
	output: {
		path: Path.join(__dirname, 'dist'),
		filename: 'bundle.js'
	},
	module: {
		rules: [
			{
				test: /\.jsx?$/,
				exclude: /node_modules/,
				use: {
					loader: 'babel-loader'
				}
			}
		]
	},
	plugins: [
		new CopyWebpackPlugin([
			{
				from: './src/index.twig',
				to: 'index.html',
				transform(content, path) {
					return new Promise(resolve => {
						Twig.renderFile(path, {}, (err, html) => {
							if (err) {
								console.error('Did not compile Twig Template at path:', path);
							}
							resolve(html);
						});
					});
				}
			}
		])
	]
};