text: function defaultParsingFlags() {
      // We need to deep clone this object.
      return {
          empty           : false,
          unusedTokens    : [],
          unusedInput     : [],
          overflow        : -2,
          charsLeftOver   : 0,
          nullInput       : false,
          invalidMonth    : null,
          invalidFormat   : false,
          userInvalidated : false,
          iso             : false,
          parsedDateParts : [],
          meridiem        : null,
          rfc2822         : false,
          weekdayMismatch : false
      };
  }
  
  export default function getParsingFlags(m) {
      if (m._pf == null) {
          m._pf = defaultParsingFlags();
      }
      return m._pf;
  }
  