aureooms/js-cardinality

/**
 * Le.
 *
 * @param {number} n
 * @param {Iterable} iterable
 */
const le = (n, iterable) => {
    if (n < 0) return false;

    if (iterable.length !== undefined) return iterable.length <= n;

    if (iterable.size !== undefined) return iterable.size <= n;

    const it = iterable[Symbol.iterator]();

    for (; n > 0; --n) if (it.next().done) return true;

    return it.next().done;
};

export default le;