webpack.config.js

const path = require('path');
const webpack = require('webpack');

const nodeEnv = process.env.NODE_ENV || 'development';
const isProduction = nodeEnv === 'production';

const srcPath = path.join(__dirname, './src');
const distPath = path.join(__dirname, './dist');

const rules = [
	{
		test: /\.js$/,
		loader: 'babel-loader',
		exclude: /node_modules/
	}
];

const plugins = [];

if (isProduction) {
	plugins.push(
		new webpack.optimize.UglifyJsPlugin({
			sourceMap: true
		})
	);
}

var config = module.exports = {
	context: srcPath,
	entry: './index.js',
	output: {
		path: distPath,
		filename: 'angular-css-modules.js',
		library: 'angular-css-modules',
		libraryTarget: 'umd',
		umdNamedDefine: true
	},
	devtool: isProduction ? 'source-map' : 'eval',
	watch: !isProduction,
	module: {
		rules
	},
	plugins,
	externals: [
		'angular'
	]
};