docs: function disallowNodeType(type) {
  
    return function() {
  
      function check(node, reporter) {
  
        if (is(node, type)) {
          reporter.report(node.id, 'Element has disallowed type <' + type + '>');
        }
      }
  
      return {
        check
      };
  
    };
  
  }