text: /**
   * @fileoverview Rule to disallow null literals, to encourage using undefined instead.
   * @author Rene Saarsoo
   */
  "use strict";
  
  module.exports = {
      rules: {
          "no-null": {
              create: function(context) {
                  return {
                      Literal: function(node) {
                          if (node.raw === "null") {
                              context.report({
                                  node: node,
                                  message: "Use undefined instead of null"
                              });
                          }
                      }
                  };
              }
          }
      }
  };
  