We shall able to see some of the library packages like clipboard using webpack concepts in odoo12.

Folder path: addons/web/static/lib/clipboard/clipboard.js.   [Used WEBPACK to bundle js files]

Actual question how it works? Any idea!!

How to create the library Js files in odoo for the required modules to bundle the Js files using webpack?

(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
	else if(typeof exports === 'object')
		exports["ClipboardJS"] = factory();
	else
		root["ClipboardJS"] = factory();
})