lastIndexOfOrElse

lastIndexOfOrElse(target, value, orElse)

Returns the index of the last occurrence of value in target. If value is not found, calls orElse with the original array.

data-first

lastIndexOfOrElse([1, 2, 3, 2], 2, () => -1); // 3
lastIndexOfOrElse([1, 2, 3], 4, (arr) => arr.length); // 3

data-last

pipe(
    [1, 2, 3, 2],
    lastIndexOfOrElse(2, () => -1),
); // 3

pipe(
    [1, 2, 3],
    lastIndexOfOrElse(4, (arr) => arr.length),
); // 3