lastIndexOfOr

function Array.lastIndexOfOr<T, U>(
    target: readonly T[],
    value: NoInfer<T>,
    or: U,
): number | U

Returns the index of the last occurrence of value in target. If value is not found, returns or.

Example

data-first

import { Array } from "@monstermann/array";

Array.lastIndexOfOr([1, 2, 3, 2], 2, -1); // 3
Array.lastIndexOfOr([1, 2, 3], 4, -1); // -1

data-last

import { Array } from "@monstermann/array";

pipe([1, 2, 3, 2], Array.lastIndexOfOr(2, -1)); // 3
pipe([1, 2, 3], Array.lastIndexOfOr(4, -1)); // -1