code: function getUrange() {
    const startPos = pos;
    const type = NodeType.UrangeType;
    const token = tokens[pos];
    const line = token.ln;
    const column = token.col;
    let content = [];
  
    content = joinValues(startPos, tokens[startPos].urangeEnd);
    pos = tokens[startPos].urangeEnd + 1;
  
    return newNode(type, content, line, column);
  }
docs: Get a u-range node (part of a unicode-range)
  @return {Node}