chore(feat): rewrite to TypeScript

[aleclarson]

First, let me state that I don't expect you to actually review this (of course, if you do, awesome!). Looking over 62 changed files, 5k additions, and 11.5k deletions at the time of writing from a stranger is a daunting task, and you may not even care to have this library moved to TypeScript (no problem at all!).

Notes

• Caveat: I removed the docs generation (and other stuff), which makes this PR a non-starter in its current state. Of course, it could be added back, though I have no incentive to spend time on that at the moment. Apologies for that!
• You are free to take this and do with it what you want. Of course, I'd be happy to get this merged so I don't have to rebase your future work, but the trade-offs make that hard for me as of now.
• All that said, I wanted to share my incomplete work just in case it might help you (or another contributor) finish the transition, if that's a desired outcome.

Thanks for your time! Happy coding.

[andris9]

You should probably fork the module for TypeScript if you have already done all the work. I have no plans to adopt TS myself for my libraries.