test(nextjs): Stub removeEventListener in fake-window test harnesses

The deferred browser session capture schedules a `whenIdleOrHidden` timer that
calls `WINDOW.removeEventListener` when it fires. These nextjs tests stub a fake
window with `addEventListener` but not `removeEventListener`, so the deferred
timer threw an unhandled `TypeError` after the test. Stub and restore
`removeEventListener` alongside `addEventListener`.

Co-Authored-By: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: Lms24

packages/nextjs/test/clientSdk.test.ts

@@ -17,19 +17,23 @@ const dom = new JSDOM(undefined, { url: 'https://example.com/' });
 Object.defineProperty(global, 'document', { value: dom.window.document, writable: true });
 Object.defineProperty(global, 'location', { value: dom.window.document.location, writable: true });
 Object.defineProperty(global, 'addEventListener', { value: () => undefined, writable: true });
+Object.defineProperty(global, 'removeEventListener', { value: () => undefined, writable: true });
 
 const originalGlobalDocument = WINDOW.document;
 const originalGlobalLocation = WINDOW.location;
 const originalNavigator = WINDOW.navigator;
 // eslint-disable-next-line @typescript-eslint/unbound-method
 const originalGlobalAddEventListener = WINDOW.addEventListener;
+// eslint-disable-next-line @typescript-eslint/unbound-method
+const originalGlobalRemoveEventListener = WINDOW.removeEventListener;
 
 afterAll(() => {
   // Clean up JSDom
   Object.defineProperty(WINDOW, 'document', { value: originalGlobalDocument });
   Object.defineProperty(WINDOW, 'location', { value: originalGlobalLocation });
   Object.defineProperty(WINDOW, 'navigator', { value: originalNavigator, writable: true, configurable: true });
   Object.defineProperty(WINDOW, 'addEventListener', { value: originalGlobalAddEventListener });
+  Object.defineProperty(WINDOW, 'removeEventListener', { value: originalGlobalRemoveEventListener });
 });
 
 function findIntegrationByName(integrations: Integration[] = [], name: string): Integration | undefined {

packages/nextjs/test/config/conflictingDebugOptions.test.ts

@@ -19,6 +19,7 @@ describe('debug: true + removeDebugLogging warning', () => {
   let originalDocument: unknown;
   let originalLocation: unknown;
   let originalAddEventListener: unknown;
+  let originalRemoveEventListener: unknown;
 
   beforeAll(async () => {
     // Pre-warm V8 compilation cache for the large SDK module graphs.
@@ -34,16 +35,19 @@ describe('debug: true + removeDebugLogging warning', () => {
     originalDocument = (globalThis as any).document;
     originalLocation = (globalThis as any).location;
     originalAddEventListener = (globalThis as any).addEventListener;
+    originalRemoveEventListener = (globalThis as any).removeEventListener;
 
     Object.defineProperty(globalThis, 'document', { value: dom.window.document, writable: true });
     Object.defineProperty(globalThis, 'location', { value: dom.window.location, writable: true });
     Object.defineProperty(globalThis, 'addEventListener', { value: () => undefined, writable: true });
+    Object.defineProperty(globalThis, 'removeEventListener', { value: () => undefined, writable: true });
   });
 
   afterAll(() => {
     Object.defineProperty(globalThis, 'document', { value: originalDocument, writable: true });
     Object.defineProperty(globalThis, 'location', { value: originalLocation, writable: true });
     Object.defineProperty(globalThis, 'addEventListener', { value: originalAddEventListener, writable: true });
+    Object.defineProperty(globalThis, 'removeEventListener', { value: originalRemoveEventListener, writable: true });
   });
 
   afterEach(() => {