Array.getUnsafe does not throw Not_found if index doesn't exist in array

[dsiu]

According to Core__Array.resi, Array.getUnsafe should throw Not_found if the index is out of bounds. However, this is not the case; it returns undefined instead.

ReScript Playground Link

rescript-core/src/Core__Array.resi

Lines 811 to 830 in d5904bd

	/**
	`getUnsafe(array, index)` returns the element at `index` of `array`.
	This is _unsafe_, meaning it will fail with an exception if `index` does not exist in `array`.
	## Exceptions
	- `Not_found`: If the provided `index` does not exist in `array`.
	## Examples
	```rescript
	let array = ["Hello", "Hi", "Good bye"]
	Console.log(array->Array.getUnsafe(0)) // "Hello"
	Console.log(array->Array.getUnsafe(3)) // Fails and raises exception
	```
	*/
	@raises(Not_found)
	external getUnsafe: (array<'a>, int) => 'a = "%array_unsafe_get"

[DZakh]

Fixed by #168