rollup.config.js

import node from 'rollup-plugin-node-resolve'
import buildOptimizer from '@angular-devkit/build-optimizer/src/build-optimizer/rollup-plugin'
import terser from 'rollup-plugin-terser'

export default {
	input: {
		app: './lib/app.js'
	},
	output: {
		dir: 'public'
	},
	plugins: [
		node({
			mainFields: ['browser', 'es2015', 'module', 'jsnext:main', 'main']
		}),
		buildOptimizer({
			sideEffectFreeModules: []
		}),
		terser.terser({
			compress: {
				passes: 3,
				pure_getters: true,
				global_defs: {
					ngDevMode: false,
				  },
			},
			mangle: true
		})

	]
}