Function every

Checks if every element in an array passes a given predicate.

Example

const areAllPositive = every((x: number) => x > 0);
const a = areAllPositive([1, 2, 3]); // true
const b = areAllPositive([-1, 0, 1]); // false
  • every<A>(
        fn: (value: A) => boolean,
    ): <S extends readonly A[]>(source: S) => boolean

    Type Parameters

    • A

    Parameters

    • fn: (value: A) => boolean

    Returns <S extends readonly A[]>(source: S) => boolean