fix: improve types for mock and allow event listeners

src/handlers/apply.ts

@@ -11,6 +11,7 @@ const apply = (mock: Nexo.Mock, that: unknown, args: unknown[]): unknown => {
   const event = new ProxyHandlerEvent("apply", proxy, { that, args });
 
   scope.emit(event.name, event);
+  mock.emit(event.name, event);
 
   if (event.defaultPrevented) {
     return event.returnValue;

src/types/Nexo.ts

@@ -1,4 +1,5 @@
 import Nexo from "../Nexo.js";
+import EventEmitter from "node:events";
 
 declare namespace Nexo {
   type functionLike = (...args: unknown[]) => unknown;
@@ -13,13 +14,12 @@ declare namespace Nexo {
     proxyMap: Map<string, WeakRef<Proxy>>;
   };
 
-  interface Mock extends functionLike {}
-
-  interface Proxy extends Mock {
+  interface Mock extends EventEmitter {
     (...args: unknown[]): unknown;
-    [K: objectKey]: unknown;
   }
 
+  interface Proxy extends functionLike {}
+
   namespace proxy {
     type data = {
       id: string;

src/utils/getProxy.ts

@@ -3,6 +3,7 @@ import map from "./map.js";
 import findProxy from "./findProxy.js";
 import isTraceable from "./isTraceable.js";
 import handlers from "../handlers/index.js";
+import EventEmitter from "node:events";
 
 const getProxy = (scope: Nexo, target: Nexo.traceable | void): Nexo.Proxy => {
   // find proxy by target
@@ -18,7 +19,10 @@ const getProxy = (scope: Nexo, target: Nexo.traceable | void): Nexo.Proxy => {
   const traceable = isTraceable(target);
   const data: Nexo.data = map.emulators.get(scope);
   const { proxyMap } = data;
-  const mock: Nexo.Mock = function () {};
+  const mock: Nexo.Mock = Object.setPrototypeOf(
+    function () {},
+    EventEmitter.prototype,
+  );
   const proxy = new Proxy(mock, handlers) as Nexo.Proxy;
 
   // set information about this proxy