code: function getPropertyDelim() {
    const type = NodeType.PropertyDelimType;
    const token = tokens[pos];
    const line = token.ln;
    const column = token.col;
    const content = ':';
  
    // Skip `:`.
    pos++;
  
    return newNode(type, content, line, column);
  }
docs: Get node with a colon
  @return {Array} `['propertyDelim']`