Before ECMAScript 2015, we had no concept of loading in code other than utilizing the script tag. We came up with many module concepts and libraries, such as RequireJS or AMD, but none of them were built into the language. With the advent of modules, we now had a way of creating highly modular code that could easily be packaged up and imported into other sections of our code. We also got scope lock on our systems where we used to have to utilize IIFEs to get this behavior.
First, before we can start to work with modules, we will need a static server to host all of our content. Even if we get Chrome to allow access to the local filesystem, the module system will get upset since it will not serve them as text/JavaScript. To get around ...
