removeOrElse

removeOrElse(map, key, orElse)

Removes the entry with the specified key from map, calling orElse with the map if the key doesn't exist.

data-first

removeOrElse(
    new Map([
        ["a", 1],
        ["b", 2],
    ]),
    "a",
    () => null,
); // Map(1) { "b" => 2 }

removeOrElse(
    new Map([
        ["a", 1],
        ["b", 2],
    ]),
    "c",
    (map) => map.size,
); // 2

data-last

pipe(
    new Map([
        ["a", 1],
        ["b", 2],
    ]),
    removeOrElse("a", () => null),
); // Map(1) { "b" => 2 }

pipe(
    new Map([
        ["a", 1],
        ["b", 2],
    ]),
    removeOrElse("c", (map) => map.size),
); // 2