lastIndexOfOrThrow

lastIndexOfOrThrow(target, value)

Returns the index of the last occurrence of value in target. If value is not found, throws an error.

data-first

lastIndexOfOrThrow([1, 2, 3, 2], 2); // 3
lastIndexOfOrThrow([1, 2, 3], 4); // throws FnError

data-last

pipe([1, 2, 3, 2], lastIndexOfOrThrow(2)); // 3
pipe([1, 2, 3], lastIndexOfOrThrow(4)); // throws FnError