2021 was done on Codepen. Only made it 4 days, but that can be found here:
https://codepen.io/collection/RzxWLj
Attempted in Rust Finished in Deno (TypeScript)
Revisted past years to try out Bun
Gave up on using Elm after seeing a lack of a file read system Pursued mostly with Bun as I had enjoyed that experience a bit more than Deno. Arguably similar from the advent perspective however.
Advent of Code: https://adventofcode.com/