Webpack
What is webpack?
Webpack is open-source JavaScript Framework which takes your javascript files and groups them or bundles them into manageble units so it is faster for the browser to load your application. When webpack processes your application, it internally generates a dependency graph which maps every module your project needs and generates one or modules.
For those familiar with Java Web Development it is something like maven.
The detailed explanation aboout the latest Webpack concepts is here.
This is a good YouTube video explaining webpack. The instructor is using an older version but it gives a good idea of webpack with example.