JS modules

CommonJS, ES MOdules and more in these 3 articles:

• https://8thlight.com/insights/a-history-of-javascript-modules-and-bundling-for-the-post-es6-developer
• https://nolanlawson.com/2017/05/22/a-brief-and-incomplete-history-of-javascript-bundlers/
• https://medium.com/sungthecoder/javascript-module-module-loader-module-bundler-es6-module-confused-yet-6343510e7bde