chore(stdlib)!: Replace parseInt error strings with structured error enum

[spotandjake]

This makes parseInt use an exception in the err case.

On a note though until #1053 is fixed I dont know if it makes sense to make this change as you lose the ability to pattern match on the individual cases without importing the exceptions directly from the runtime which we dont want users doing.

That could still make it in before 0.6 so this pr is up for that and also just in case we want to move forward on this anyways.

This has been blocked by: #1758 or #1759 either one would work to get this moving.

Closes: #1057

[spotandjake]

This is now blocked on #1886

[phated]

@spotandjake is this unblocked now that the exception re-export PR has been merged?

[spotandjake]

@spotandjake is this unblocked now that the exception re-export PR has been merged?

No this is still blocked. We had decided on a conversation in discord, to use an enum instead of an exception.

#1886 is what is blocking this at the moment.

[phated]

@spotandjake I don't remember that conversation exactly. We don't really want many enums in pervasives because they can cause ambiguous type inference with user code.

[spotandjake]

@spotandjake I don't remember that conversation exactly. We don't really want many enums in pervasives because they can cause ambiguous type inference with user code.

Switched back to an exception, looks like that did fix the problem I was running into. One note graindoc doesnt seem to be generating documentation for provided exceptions.

[spotandjake]

When trying to graindoc this I get the error Failure("NYI: Otyp_manifest pretty-printer"), so the graindoc needs to be updated.

[spotandjake]

This has been switched to an enum now.