Description
I'm finding myself increasingly nervous in modifying any part of the codebase, especially bigimage_recursive and bigimage_recursive_loop (function names are evidently not my strong suit).
Rewriting in Typescript will allow the code to be significantly stricter, and would have prevented a fair amount of the regressions that plagued earlier versions (including the gallery bug in 0.19.3/4).
Also, by using Typescript, this script can also leverage technologies such as babel, allowing for async/await (without removing support for older/more esoteric browsers), which would significantly reduce callback hell, and I presume would make bigimage_recursive much simpler as well.
Of course, this would be a massive undertaking, but at this point development of new features for the script has nearly reached a halt, so I believe the time taken away to rewrite this would in the end be worth it. Hopefully this could also allow contributors to not be scared away by the hideous monster that is the codebase.