code: function isWhiteSpaceSingleLine(ch) {
          // Note: nextLine is in the Zs space, and should be considered to be a whitespace.
          // It is explicitly not a line-break as it isn't in the exact set specified by EcmaScript.
          return ch === 32 /* space */ ||
              ch === 9 /* tab */ ||
              ch === 11 /* verticalTab */ ||
              ch === 12 /* formFeed */ ||
              ch === 160 /* nonBreakingSpace */ ||
              ch === 133 /* nextLine */ ||
              ch === 5760 /* ogham */ ||
              ch >= 8192 /* enQuad */ && ch <= 8203 /* zeroWidthSpace */ ||
              ch === 8239 /* narrowNoBreakSpace */ ||
              ch === 8287 /* mathematicalSpace */ ||
              ch === 12288 /* ideographicSpace */ ||
              ch === 65279 /* byteOrderMark */;
      }
docs: Does not include line breaks. For that, see isWhiteSpaceLike.