I suggest the other way around Let's change si units to play nice with powers of two

Let me introduce the kibimeter

I've used gleam for a toy project in uni, and AoC

My main friction point is that the Int type maps to different concepts in erlang and js

In erlang it's a arbitrary precision Int

In js it the js number type, which is a 64bit float iirc.

Also recursion can hit limits way sooner in js.

For me, my code rarely ran in both js and erlang. But could be skillissue

Fair, but you usually don't run your project on both, unless you're writing a library.

Pick the target that makes sense for your project and stick with it :)

JS/TS isn't my favourite language, but it's pretty decent these days. If I'm picking a different language and targeting the web, it's probably because I want to run the same code natively as well.