I have an Angular project and it uses a bunch of Javascript Libraries, starting with jQuery, going through Modal Forms, Tooltips and many more, mostly from third party providers. The thing is that, even when my Angular website makes use of these Libraries, the Website does not make exactly FULL use of the complete Libraries, but at the moment of Building the Dist files, the styles.xx.css and main.js are quite big files containing all these Libraries and Styles inside.

So, I was thinking there must be a way to only include in the final Distribution, only the "actual" code that is used by the Website and not the complete Libraries that includes the used and unused code. There are many features in those Libraries that the Website actually does not use, but these are at the same time, big files that make it difficult to just get in there and remove code by hand.

If there would be some sort of Code Coverage test that I can run on the complete website, just to "mark" all the actual used code and remove/discard from Dist compilation, all the unused code, that would be just awesome. This would be no-doubt a very efficient way to put on diet the Production compilations on any website.

Anyone knows if something like this exists?