/**
   * @fileoverview Rule to disallow use of the new operator with the `Symbol` object
   * @author Alberto Rodríguez
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = {
      meta: {
          docs: {
              description: "disallow `new` operators with the `Symbol` object",
              category: "ECMAScript 6",
              recommended: true
          },
  
          schema: []
      },
  
      create(context) {
  
          return {
              "Program:exit"() {
                  const globalScope = context.getScope();
                  const variable = globalScope.set.get("Symbol");
  
                  if (variable && variable.defs.length === 0) {
                      variable.references.forEach(ref => {
                          const node = ref.identifier;
  
                          if (node.parent && node.parent.type === "NewExpression") {
                              context.report({ node, message: "`Symbol` cannot be called as a constructor." });
                          }
                      });
                  }
              }
          };
  
      }
  };