cleanup

packages/react/src/profiler.tsx

@@ -50,7 +50,7 @@ function pushActivity(name: string, op: string): number | null {
 
 /**
  * popActivity removes a React activity.
- * Is a no-op if invalid Tracing integration or invalid activity id.
+ * Is a no-op if Tracing integration is not valid.
  * @param activity id of activity that is being popped
  */
 function popActivity(activity: number | null): void {
@@ -64,11 +64,11 @@ function popActivity(activity: number | null): void {
 
 /**
  * Obtain a span given an activity id.
- * Is a no-op if invalid Tracing integration.
+ * Is a no-op if Tracing integration is not valid.
  * @param activity activity id associated with obtained span
  */
 function getActivitySpan(activity: number | null): Span | undefined {
-  if (globalTracingIntegration === null) {
+  if (activity === null || globalTracingIntegration === null) {
     return undefined;
   }
 

packages/react/test/profiler.test.tsx

@@ -4,24 +4,18 @@ import { renderHook } from '@testing-library/react-hooks';
 import * as React from 'react';
 
 import { UNKNOWN_COMPONENT, useProfiler, withProfiler } from '../src/profiler';
-/*(
-for key in SENTRY_FEATURES:
-	SENTRY_FEATURES[key] = True
 
-SENTRY_APM_SAMPLING = 1
-)*/
 const TEST_SPAN_ID = '518999beeceb49af';
+const TEST_TIMESTAMP = '123456';
 
 const mockStartChild = jest.fn((spanArgs: SpanContext) => ({ ...spanArgs }));
-const TEST_SPAN = {
-  spanId: TEST_SPAN_ID,
-  startChild: mockStartChild,
-};
-const TEST_TIMESTAMP = '123456';
 const mockPushActivity = jest.fn().mockReturnValue(1);
 const mockPopActivity = jest.fn();
 const mockLoggerWarn = jest.fn();
-const mockGetActivitySpan = jest.fn().mockReturnValue(TEST_SPAN);
+const mockGetActivitySpan = jest.fn().mockReturnValue({
+  spanId: TEST_SPAN_ID,
+  startChild: mockStartChild,
+});
 
 jest.mock('@sentry/utils', () => ({
   logger: {