I should suck it up and learn to program properly in TypeScript. There's a growing list of software that I'd like to use and extend that uses TypeScript (Obsidian, Lume, Fedify), not to mention its utility for web programming. The language itself is pretty good, though I'm not thrilled by a lot of the tooling and ecosystem around it. Hopefully there's a way of writing usable code in it that keeps the messiness at bay.