Attempted with rescript with gentype, but Js.Float.isFinite turned into $$isFinite. I'm not sure why, so currently it's implemented with js and type definitions. if anyone knows reason why, please let me know.

https://forum.rescript-lang.org/t/prefix-from-build-output/5115/2?u=justive

$$ appeared because of the ambiguity of the isFinite, which is globally available on the js side.

@JUSTIVE Hey, thanks for the PR :). Looking at the typing maybe replicating the isNumber type would be more practical, since Number.isFinite is typed isFinite(number: unknown) by default, we would just extend it with a type predicate.

export declare function isFinite<A>(
  value: A | number,
): value is Guard<A, number>

Edit: @JUSTIVE Also I don't know how likely these PR are to be merged, seeing how many are racking up and staying open. The last merge seems to date back to 2022.

I'm also not sure when @mobily will be back, but I believe he will, as he said on #93.
As a daily ts-belt user, I really love this library, and hope to keep maintained.

just updated the type as you said, thanks for the reply.