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node_modules/moment/src/lib/create/valid.js 1.38 KB
ce4c83ff   wxy   初始提交
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  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.weekdayMismatch &&
              !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;
  }