code: function isWhiteSpace(ch) {
          return (ch === ' ') || (ch === '\u0009') || (ch === '\u000B') ||
              (ch === '\u000C') || (ch === '\u00A0') ||
              (ch.charCodeAt(0) >= 0x1680 &&
               '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(ch) >= 0);
      }
docs: 7.2 White Space