http://u.jcubic.pl/r5344g		https://github.com/jcubic/jsh.php
http://u.jcubic.pl/5p1b3qh		https://code.lengstorf.com/learn-rollup-js/
http://u.jcubic.pl/n461y26		https://medium.com/webpack/webpack-and-rollup-the-same-but-different-a41ad427058c