A few years back I wrote a little library that implements OCaml-inspired pattern matching using just plan JavaScript destructuring syntax. I don't think I ever shared it here. Thought you might find it interesting.
I did this just for fun, don't use it in prod. It's very inefficient. Have a look at the source for a chuckle, it's a single 145 line file.
Link: https://github.com/mrkev/fnMatch
Playground: https://aykev.dev/fnMatch/
