a=L(e),t=n.call(a.parsedDateParts,function(e){return null!=e}),s=!isNaN(e._d.getTime())&&a.overflow<0&&!a.empty&&!a.invalidEra&&!a.invalidMonth&&!a.invalidWeekday&&!a.weekdayMismatch&&!a.nullInput&&!a.invalidFormat&&!a.userInvalidated&&(!a.meridiem||a.meridiem&&t);if(e._strict&&(s=s&&0===a.charsLeftOver&&0===a.unusedTokens.length&&void 0===a.bigHour),null!=Object.isFrozen&&Object.isFrozen(e))return s;e._isValid=s}return e._isValid}function y(e){var a=c(NaN);return null!=e?l(L(a),e):L(a).userInva...