webpack.config.js

const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const mode = process.env.NODE_ENV || 'development';
const prod = mode === 'production';

module.exports = {
	devServer: {
		historyApiFallback: true,
		disableHostCheck: true,
		watchContentBase: true,
		host: '0.0.0.0',
		compress: true,
		port: 8080,
		hot: false,
		overlay: {
			warnings: false,
			errors: true,
		},
	},
	entry: {
		bundle: ['./src/main.js']
	},
	resolve: {
		extensions: ['.mjs', '.js', '.svelte']
	},
	output: {
		path: __dirname + '/public',
		filename: '[name].js',
		chunkFilename: '[name].[id].js'
	},
	module: {
		rules: [
			{
				test: /\.svelte$/,
				use: {
					loader: 'svelte-loader',
					options: {
						emitCss: true,
						hotReload: false,
						preprocess: require('svelte-preprocess')({
							aliases: [['stylus']],
							stylus: {
								plugins: [
									require('autoprefixer')({
										browsers: 'last 2 versions'
									})
								]
							},
						})
					}
				}
			},
			{
				test: /\.css$/,
				use: [
					/**
					 * MiniCssExtractPlugin doesn't support HMR.
					 * For developing, use 'style-loader' instead.
					 * */
					prod ? MiniCssExtractPlugin.loader : 'style-loader',
					'css-loader',
					'postcss-loader'
				]
			},
			{
				test: /\.styl(us)?$/,
				use: [
					prod ? MiniCssExtractPlugin.loader : 'style-loader',
					'css-loader',
					'postcss-loader',
					'stylus-loader'
				]
			}
		]
	},
	mode,
	plugins: [
		new MiniCssExtractPlugin({
			filename: '[name].css'
		})
	],
	devtool: prod ? false: 'source-map'
};