Heh, I went down that same rabbid hole recently, but in addition to 'shell scripting tasks' also describe a whole C/C++ build in Deno-flavoured TS instead of wrestling with cmake syntax: https://github.com/floooh/fibs - and while at it, also allow to integrate build jobs written in Typescript into the C/C++ build.

...this is the same sort of 'works for me' philosophy as in Matklads post though, it's so heavily opinionated and personalized that I don't expect other people to pick it up, but it makes my day-to-day work a lot easier (especially since I switch multiple times between macOS, Linux and Windows on a typical day).

I'm not sure if Bun can do it too, but the one great thing about Deno is that it can directly import without requiring a 'manifest file' (e.g. package.json or deno.json), e.g. you can do something like this right in the code:

    import { Bla } from 'jsr:@floooh/bla^1';

This is just perfect for this type of command line tools.