code: function consumeWord (css, start) {
      let next = start;
      let code;
      do {
          code = css.charCodeAt(next);
          if (wordDelimiters[code]) {
              return next - 1;
          } else if (code === t.backslash) {
              next = consumeEscape(css, next) + 1;
          } else {
              // All other characters are part of the word
              next++;
          }
      } while (next < css.length);
      return next - 1;
  }
docs: Returns the last index of the bar css word
  @param {string} css The string in which the word begins
  @param {number} start The index into the string where word's first letter occurs