A collector for browser extensions, or some kind of abstract collector

Question

JavaScript

Good time of the day. The situation is this: I am developing some browser extension for chrome and firefox at the same time. A significant part of the code is common, however, of course, there are also enough differences. The question is: is it possible to somehow get rid of the constant copying of shared code from one project to another? In principle, I can write a batch file that will do this, but what if there are some ready-made solutions?

Answer 1

For myself, I chose a regular .sh script. The good news is that you don't need any extra stuff to assemble it.
Well or Makefile it is possible.

Answer 2

Not exactly a faucet, but it's even cooler: kangoextensions.com/kango.html
The only thing is that it's paid for commercial use.

Answer 3

I am using Closure compiler . In the compilation line, I set the define of the desired browser and it obfuscates, minimizes the code, and most importantly throws out unused code.