findIndexOrElse

findIndexOrElse(target, predicate, orElse)

Returns the index of the first element in target that satisfies the provided predicate function. If no element satisfies the predicate, calls orElse with the original array.

data-first

findIndexOrElse(
    [1, 2, 3, 4],
    (x) => x > 2,
    () => -1,
); // 2

findIndexOrElse(
    [1, 2, 3, 4],
    (x) => x > 5,
    (arr) => arr.length,
); // 4

data-last

pipe(
    [1, 2, 3, 4],
    findIndexOrElse(
        (x) => x > 2,
        () => -1,
    ),
); // 2

pipe(
    [1, 2, 3, 4],
    findIndexOrElse(
        (x) => x > 5,
        (arr) => arr.length,
    ),
); // 4