Removing Unnecessary JavaScript

JavaScript
1

I’ve successfully extracted a particular feature from one site to another. The issue is, there’s code being used for this one feature by 3 different JavaScript files and I’m trying to find something that can help eliminate unused code so I’m not introducing thousands of lines of code to a site that will be going unused and slowing down load times.

Is there anything out there that can help with that?

2

Your best bet is to use some kind of automated code coverage tool that can show you “hot” and “cold” code paths (basically branches of code that are frequently/infrequently used, respectively). I use Plato for analyzing my JavaScript and there are others, but it does require that your JS be unit testable.