import extend from '../utils/extend';
import { createUTC } from './utc';
import getParsingFlags from '../create/parsing-flags';
import some from '../utils/some';
export function isValid(m) {
if (m._isValid == null) {
var flags = getParsingFlags(m);
var parsedParts = some.call(flags.parsedDateParts, function (i) {
return i != null;
});
var isNowValid = !isNaN(m._d.getTime()) &&
flags.overflow < 0 &&
!flags.empty &&
!flags.invalidMonth &&
!flags.invalidWeekday &&
!flags.nullInput &&
!flags.invalidFormat &&
!flags.userInvalidated &&
(!flags.meridiem || (flags.meridiem && parsedParts));
if (m._strict) {
isNowValid = isNowValid &&
flags.charsLeftOver === 0 &&
flags.unusedTokens.length === 0 &&
flags.bigHour === undefined;
}
if (Object.isFrozen == null || !Object.isFrozen(m)) {
m._isValid = isNowValid;
}
else {
return isNowValid;
}
}
return m._isValid;
}
export function createInvalid (flags) {
var m = createUTC(NaN);
if (flags != null) {
extend(getParsingFlags(m), flags);
}
else {
getParsingFlags(m).userInvalidated = true;
}
return m;
}