I'd say it's "inspired" rather than "translated".

The part about using the typescript language server to compute the solution, and the protagonist claiming the code is "concise" because only 4 lines of javascript were generated, was absolutely brilliant. Cracked me up at least.

Glancing at the actual code, I admit I'm with Criss in my ability to follow the logic, but it doesn't look like a direct translation from Haskel types to Typescript types either.

At any rate, very well done.