when

when(predicate, onTrue)

Conditionally transforms a value when the predicate is true, otherwise returns the original value.

data-first

when(
    5,
    (x) => x > 3,
    (x) => x * 2,
); // 10

when(
    2,
    (x) => x > 3,
    (x) => x * 2,
); // 2

data-last

pipe(
    5,
    when(
        (x) => x > 3,
        (x) => x * 2,
    ),
); // 10

pipe(
    2,
    when(
        (x) => x > 3,
        (x) => x * 2,
    ),
); // 2