mapAtOr

mapAtOr(array, index, mapper, fallback)

Applies the mapper function to the element at the specified index in array, returning a new array with the mapped element, or fallback if the index is out of bounds.

data-first

mapAtOr([1, 2, 3], 10, (x) => x * 10, []); // []

data-last

pipe(
    [1, 2, 3],
    mapAtOr(10, (x) => x * 10, []),
); // []