Function isInvalidDayOfMonth

src/pattern/validation/pattern-validation.ts:61–66

* @param {string} expression The Cron-Job expression. * @returns {boolean}

(expression)

 * @returns {boolean}
 */
function isInvalidDayOfMonth(expression) {
    // 'L' (last day of the month) is a valid token in this field only; the
    // remaining values must still be valid day numbers.
    const days = expression.filter((value) => value !== 'L');
    return !isValidExpression(days, 1, 31);
}

/**
 * @param {string} expression The Cron-Job expression.