diff --git a/packages/replay-internal/test/integration/autoSaveSession.test.ts b/packages/replay-internal/test/integration/autoSaveSession.test.ts
index 7fb3951756ae..b798f05b544d 100644
--- a/packages/replay-internal/test/integration/autoSaveSession.test.ts
+++ b/packages/replay-internal/test/integration/autoSaveSession.test.ts
@@ -1,4 +1,8 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, describe, expect, test, vi } from 'vitest';
 
 import { EventType } from '@sentry-internal/rrweb';
 
diff --git a/packages/replay-internal/test/integration/beforeAddRecordingEvent.test.ts b/packages/replay-internal/test/integration/beforeAddRecordingEvent.test.ts
index 7f8495375864..a3b587ee0bda 100644
--- a/packages/replay-internal/test/integration/beforeAddRecordingEvent.test.ts
+++ b/packages/replay-internal/test/integration/beforeAddRecordingEvent.test.ts
@@ -1,5 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
 import type { MockInstance, MockedFunction } from 'vitest';
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import * as SentryBrowserUtils from '@sentry-internal/browser-utils';
 import * as SentryCore from '@sentry/core';
diff --git a/packages/replay-internal/test/integration/coreHandlers/handleAfterSendEvent.test.ts b/packages/replay-internal/test/integration/coreHandlers/handleAfterSendEvent.test.ts
index 8edc813aaad2..aa88e9582d32 100644
--- a/packages/replay-internal/test/integration/coreHandlers/handleAfterSendEvent.test.ts
+++ b/packages/replay-internal/test/integration/coreHandlers/handleAfterSendEvent.test.ts
@@ -1,5 +1,10 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
 import type { MockInstance } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
 import { useFakeTimers } from '../../utils/use-fake-timers';
 
 useFakeTimers();
diff --git a/packages/replay-internal/test/integration/coreHandlers/handleBeforeSendEvent.test.ts b/packages/replay-internal/test/integration/coreHandlers/handleBeforeSendEvent.test.ts
index 39c53cf91e6f..3c555ddf6f82 100644
--- a/packages/replay-internal/test/integration/coreHandlers/handleBeforeSendEvent.test.ts
+++ b/packages/replay-internal/test/integration/coreHandlers/handleBeforeSendEvent.test.ts
@@ -1,4 +1,8 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest';
 
 import { handleBeforeSendEvent } from '../../../src/coreHandlers/handleBeforeSendEvent';
 import type { ReplayContainer } from '../../../src/replay';
diff --git a/packages/replay-internal/test/integration/coreHandlers/handleGlobalEvent.test.ts b/packages/replay-internal/test/integration/coreHandlers/handleGlobalEvent.test.ts
index 1526e7175f4f..2c41dbfbfd62 100644
--- a/packages/replay-internal/test/integration/coreHandlers/handleGlobalEvent.test.ts
+++ b/packages/replay-internal/test/integration/coreHandlers/handleGlobalEvent.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { getClient } from '@sentry/core';
 import type { Event } from '@sentry/types';
 
diff --git a/packages/replay-internal/test/integration/earlyEvents.test.ts b/packages/replay-internal/test/integration/earlyEvents.test.ts
index b30c28841491..11dcb7295c0e 100644
--- a/packages/replay-internal/test/integration/earlyEvents.test.ts
+++ b/packages/replay-internal/test/integration/earlyEvents.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { BASE_TIMESTAMP } from '..';
 import { resetSdkMock } from '../mocks/resetSdkMock';
 import { useFakeTimers } from '../utils/use-fake-timers';
diff --git a/packages/replay-internal/test/integration/errorSampleRate.test.ts b/packages/replay-internal/test/integration/errorSampleRate.test.ts
index ef6d80dfeac6..3763ef83de44 100644
--- a/packages/replay-internal/test/integration/errorSampleRate.test.ts
+++ b/packages/replay-internal/test/integration/errorSampleRate.test.ts
@@ -1,5 +1,10 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { captureException, getClient } from '@sentry/core';
-import { vi } from 'vitest';
 
 import {
   BUFFER_CHECKOUT_TIME,
diff --git a/packages/replay-internal/test/integration/eventProcessors.test.ts b/packages/replay-internal/test/integration/eventProcessors.test.ts
index 58a0f488eb91..b6c5bd23624d 100644
--- a/packages/replay-internal/test/integration/eventProcessors.test.ts
+++ b/packages/replay-internal/test/integration/eventProcessors.test.ts
@@ -1,4 +1,8 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { getClient, getCurrentScope } from '@sentry/core';
 import type { Event } from '@sentry/types';
diff --git a/packages/replay-internal/test/integration/events.test.ts b/packages/replay-internal/test/integration/events.test.ts
index c7670b70a0b6..a370fb730874 100644
--- a/packages/replay-internal/test/integration/events.test.ts
+++ b/packages/replay-internal/test/integration/events.test.ts
@@ -1,3 +1,10 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import type { MockInstance } from 'vitest';
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { getClient } from '@sentry/core';
 
 import { WINDOW } from '../../src/constants';
diff --git a/packages/replay-internal/test/integration/flush.test.ts b/packages/replay-internal/test/integration/flush.test.ts
index 31fd8a91a5e2..ea3638090f4c 100644
--- a/packages/replay-internal/test/integration/flush.test.ts
+++ b/packages/replay-internal/test/integration/flush.test.ts
@@ -1,5 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
 import type { MockedFunction } from 'vitest';
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { useFakeTimers } from '../utils/use-fake-timers';
 
diff --git a/packages/replay-internal/test/integration/getReplayId.test.ts b/packages/replay-internal/test/integration/getReplayId.test.ts
index 7f24e5b1cbb7..17315cbf0826 100644
--- a/packages/replay-internal/test/integration/getReplayId.test.ts
+++ b/packages/replay-internal/test/integration/getReplayId.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
 import { mockSdk } from '../mocks/mockSdk';
 import { useFakeTimers } from '../utils/use-fake-timers';
 
diff --git a/packages/replay-internal/test/integration/integrationSettings.test.ts b/packages/replay-internal/test/integration/integrationSettings.test.ts
index b0ec35fc8a05..62dc2a4a6588 100644
--- a/packages/replay-internal/test/integration/integrationSettings.test.ts
+++ b/packages/replay-internal/test/integration/integrationSettings.test.ts
@@ -1,4 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import type { MockInstance } from 'vitest';
 
 import { mockSdk } from '../index';
diff --git a/packages/replay-internal/test/integration/rateLimiting.test.ts b/packages/replay-internal/test/integration/rateLimiting.test.ts
index 01e52aa641ef..6a60f8251b93 100644
--- a/packages/replay-internal/test/integration/rateLimiting.test.ts
+++ b/packages/replay-internal/test/integration/rateLimiting.test.ts
@@ -1,3 +1,10 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import type { MockedFunction } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { getClient } from '@sentry/core';
 import type { Transport, TransportMakeRequestResponse } from '@sentry/types';
 
@@ -14,7 +21,7 @@ async function advanceTimers(time: number) {
   await new Promise(process.nextTick);
 }
 
-type MockTransportSend = vi.MockedFunction<Transport['send']>;
+type MockTransportSend = MockedFunction<Transport['send']>;
 
 describe('Integration | rate-limiting behaviour', () => {
   let replay: ReplayContainer;
diff --git a/packages/replay-internal/test/integration/rrweb.test.ts b/packages/replay-internal/test/integration/rrweb.test.ts
index 1b571b356244..863baab45bce 100644
--- a/packages/replay-internal/test/integration/rrweb.test.ts
+++ b/packages/replay-internal/test/integration/rrweb.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
 import { resetSdkMock } from '../mocks/resetSdkMock';
 import { useFakeTimers } from '../utils/use-fake-timers';
 
@@ -15,7 +21,7 @@ describe('Integration | rrweb', () => {
         stickySession: false,
       },
     });
-    expect(mockRecord.mock.calls[0][0]).toMatchInlineSnapshot(`
+    expect(mockRecord.mock.calls[0]?.[0]).toMatchInlineSnapshot(`
       {
         "blockSelector": ".sentry-block,[data-sentry-block],base[href="/"],img,image,svg,video,object,picture,embed,map,audio,link[rel="icon"],link[rel="apple-touch-icon"]",
         "collectFonts": true,
diff --git a/packages/replay-internal/test/integration/sampling.test.ts b/packages/replay-internal/test/integration/sampling.test.ts
index c0e5404056a1..a9b756c064c2 100644
--- a/packages/replay-internal/test/integration/sampling.test.ts
+++ b/packages/replay-internal/test/integration/sampling.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { getClient } from '@sentry/core';
 import { resetSdkMock } from '../mocks/resetSdkMock';
 import { useFakeTimers } from '../utils/use-fake-timers';
diff --git a/packages/replay-internal/test/integration/sendReplayEvent.test.ts b/packages/replay-internal/test/integration/sendReplayEvent.test.ts
index 9b318700a6fa..a58da34b521c 100644
--- a/packages/replay-internal/test/integration/sendReplayEvent.test.ts
+++ b/packages/replay-internal/test/integration/sendReplayEvent.test.ts
@@ -1,5 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
 import type { MockInstance, MockedFunction } from 'vitest';
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import * as SentryBrowserUtils from '@sentry-internal/browser-utils';
 import * as SentryCore from '@sentry/core';
diff --git a/packages/replay-internal/test/integration/session.test.ts b/packages/replay-internal/test/integration/session.test.ts
index 397dd66d119e..0d3621cd4f70 100644
--- a/packages/replay-internal/test/integration/session.test.ts
+++ b/packages/replay-internal/test/integration/session.test.ts
@@ -1,4 +1,8 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { getClient } from '@sentry/core';
 import type { Transport } from '@sentry/types';
diff --git a/packages/replay-internal/test/integration/shouldFilterRequest.test.ts b/packages/replay-internal/test/integration/shouldFilterRequest.test.ts
index 207a8182581f..ee44c3886775 100644
--- a/packages/replay-internal/test/integration/shouldFilterRequest.test.ts
+++ b/packages/replay-internal/test/integration/shouldFilterRequest.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { shouldFilterRequest } from '../../src/util/shouldFilterRequest';
 import { mockSdk } from '../index';
 
diff --git a/packages/replay-internal/test/integration/start.test.ts b/packages/replay-internal/test/integration/start.test.ts
index dff5df38b53d..8a72f1481fb5 100644
--- a/packages/replay-internal/test/integration/start.test.ts
+++ b/packages/replay-internal/test/integration/start.test.ts
@@ -1,4 +1,8 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { getClient } from '@sentry/core';
 import type { Transport } from '@sentry/types';
diff --git a/packages/replay-internal/test/integration/stop.test.ts b/packages/replay-internal/test/integration/stop.test.ts
index b4d256f3f9f0..6ebca89891b0 100644
--- a/packages/replay-internal/test/integration/stop.test.ts
+++ b/packages/replay-internal/test/integration/stop.test.ts
@@ -1,5 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
 import type { MockInstance, MockedFunction } from 'vitest';
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import * as SentryBrowserUtils from '@sentry-internal/browser-utils';
 
diff --git a/packages/replay-internal/test/unit/coreHandlers/handleBreadcrumbs.test.ts b/packages/replay-internal/test/unit/coreHandlers/handleBreadcrumbs.test.ts
index 8fd41b553ccb..f8c54341fa41 100644
--- a/packages/replay-internal/test/unit/coreHandlers/handleBreadcrumbs.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/handleBreadcrumbs.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import { CONSOLE_ARG_MAX_SIZE } from '../../../src/constants';
 import { normalizeBreadcrumb, normalizeConsoleBreadcrumb } from '../../../src/coreHandlers/handleBreadcrumbs';
 
diff --git a/packages/replay-internal/test/unit/coreHandlers/handleClick.test.ts b/packages/replay-internal/test/unit/coreHandlers/handleClick.test.ts
index d143eaa5a5a7..c2e46722941e 100644
--- a/packages/replay-internal/test/unit/coreHandlers/handleClick.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/handleClick.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { beforeEach, describe, expect, it, test, vi } from 'vitest';
+
 import { useFakeTimers } from '../../utils/use-fake-timers';
 
 useFakeTimers();
diff --git a/packages/replay-internal/test/unit/coreHandlers/handleDom.test.ts b/packages/replay-internal/test/unit/coreHandlers/handleDom.test.ts
index 29f39a6c0a42..993291be675e 100644
--- a/packages/replay-internal/test/unit/coreHandlers/handleDom.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/handleDom.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { describe, expect, test } from 'vitest';
+
 import type { HandlerDataDom } from '@sentry/types';
 
 import { handleDom } from '../../../src/coreHandlers/handleDom';
diff --git a/packages/replay-internal/test/unit/coreHandlers/handleKeyboardEvent.test.ts b/packages/replay-internal/test/unit/coreHandlers/handleKeyboardEvent.test.ts
index d08f1ef1a800..4e438173d3cd 100644
--- a/packages/replay-internal/test/unit/coreHandlers/handleKeyboardEvent.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/handleKeyboardEvent.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { describe, expect, it } from 'vitest';
+
 import { getKeyboardBreadcrumb } from '../../../src/coreHandlers/handleKeyboardEvent';
 
 describe('Unit | coreHandlers | handleKeyboardEvent', () => {
diff --git a/packages/replay-internal/test/unit/coreHandlers/handleNetworkBreadcrumbs.test.ts b/packages/replay-internal/test/unit/coreHandlers/handleNetworkBreadcrumbs.test.ts
index 1271a557a744..04955477f679 100644
--- a/packages/replay-internal/test/unit/coreHandlers/handleNetworkBreadcrumbs.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/handleNetworkBreadcrumbs.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { SENTRY_XHR_DATA_KEY } from '@sentry-internal/browser-utils';
 import type {
   Breadcrumb,
diff --git a/packages/replay-internal/test/unit/coreHandlers/util/addBreadcrumbEvent.test.ts b/packages/replay-internal/test/unit/coreHandlers/util/addBreadcrumbEvent.test.ts
index d82eb5f183c6..eff636a70da6 100644
--- a/packages/replay-internal/test/unit/coreHandlers/util/addBreadcrumbEvent.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/util/addBreadcrumbEvent.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { BASE_TIMESTAMP } from '../../..';
 import { addBreadcrumbEvent } from '../../../../src/coreHandlers/util/addBreadcrumbEvent';
 import type { EventBufferArray } from '../../../../src/eventBuffer/EventBufferArray';
diff --git a/packages/replay-internal/test/unit/coreHandlers/util/fetchUtils.test.ts b/packages/replay-internal/test/unit/coreHandlers/util/fetchUtils.test.ts
index 73a23e00babe..ffd665471975 100644
--- a/packages/replay-internal/test/unit/coreHandlers/util/fetchUtils.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/util/fetchUtils.test.ts
@@ -1,9 +1,9 @@
+import { describe, expect, it, vi } from 'vitest';
+
 import { useFakeTimers } from '../../../utils/use-fake-timers';
 
 useFakeTimers();
 
-import { vi } from 'vitest';
-
 import { _getResponseInfo } from '../../../../src/coreHandlers/util/fetchUtils';
 
 describe('Unit | coreHandlers | util | fetchUtils', () => {
diff --git a/packages/replay-internal/test/unit/coreHandlers/util/getAttributesToRecord.test.ts b/packages/replay-internal/test/unit/coreHandlers/util/getAttributesToRecord.test.ts
index 393d58427e34..6181b480597b 100644
--- a/packages/replay-internal/test/unit/coreHandlers/util/getAttributesToRecord.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/util/getAttributesToRecord.test.ts
@@ -1,3 +1,5 @@
+import { expect, it } from 'vitest';
+
 import { getAttributesToRecord } from '../../../../src/coreHandlers/util/getAttributesToRecord';
 
 it('records only included attributes', function () {
diff --git a/packages/replay-internal/test/unit/coreHandlers/util/networkUtils.test.ts b/packages/replay-internal/test/unit/coreHandlers/util/networkUtils.test.ts
index 33ea345ec609..4158c8bfe7a9 100644
--- a/packages/replay-internal/test/unit/coreHandlers/util/networkUtils.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/util/networkUtils.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { describe, expect, it } from 'vitest';
+
 import { NETWORK_BODY_MAX_SIZE } from '../../../../src/constants';
 import {
   buildNetworkRequestOrResponse,
diff --git a/packages/replay-internal/test/unit/coreHandlers/util/xhrUtils.test.ts b/packages/replay-internal/test/unit/coreHandlers/util/xhrUtils.test.ts
index 6c805e6d2238..e6a64dfe7285 100644
--- a/packages/replay-internal/test/unit/coreHandlers/util/xhrUtils.test.ts
+++ b/packages/replay-internal/test/unit/coreHandlers/util/xhrUtils.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { describe, expect, it } from 'vitest';
+
 import { _parseXhrResponse } from '../../../../src/coreHandlers/util/xhrUtils';
 
 describe('Unit | coreHandlers | util | xhrUtils', () => {
diff --git a/packages/replay-internal/test/unit/eventBuffer/EventBufferArray.test.ts b/packages/replay-internal/test/unit/eventBuffer/EventBufferArray.test.ts
index 8c8d9a7e99e5..05055fe62763 100644
--- a/packages/replay-internal/test/unit/eventBuffer/EventBufferArray.test.ts
+++ b/packages/replay-internal/test/unit/eventBuffer/EventBufferArray.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import { REPLAY_MAX_EVENT_BUFFER_SIZE } from '../../../src/constants';
 import { createEventBuffer } from '../../../src/eventBuffer';
 import { EventBufferSizeExceededError } from '../../../src/eventBuffer/error';
diff --git a/packages/replay-internal/test/unit/eventBuffer/EventBufferCompressionWorker.test.ts b/packages/replay-internal/test/unit/eventBuffer/EventBufferCompressionWorker.test.ts
index 5854a4fbaa6e..4369a8b930c8 100644
--- a/packages/replay-internal/test/unit/eventBuffer/EventBufferCompressionWorker.test.ts
+++ b/packages/replay-internal/test/unit/eventBuffer/EventBufferCompressionWorker.test.ts
@@ -1,5 +1,11 @@
+/**
+ * @vitest-environment jsdom
+ */
+
 import 'jsdom-worker';
 
+import { describe, expect, it, vi } from 'vitest';
+
 import { BASE_TIMESTAMP } from '../..';
 import { REPLAY_MAX_EVENT_BUFFER_SIZE } from '../../../src/constants';
 import { createEventBuffer } from '../../../src/eventBuffer';
diff --git a/packages/replay-internal/test/unit/eventBuffer/EventBufferProxy.test.ts b/packages/replay-internal/test/unit/eventBuffer/EventBufferProxy.test.ts
index 819813776c5d..3bcc073a023c 100644
--- a/packages/replay-internal/test/unit/eventBuffer/EventBufferProxy.test.ts
+++ b/packages/replay-internal/test/unit/eventBuffer/EventBufferProxy.test.ts
@@ -1,5 +1,12 @@
+/**
+ * @vitest-environment jsdom
+ */
+
 import 'jsdom-worker';
 
+import type { MockInstance } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import { BASE_TIMESTAMP } from '../..';
 import { EventBufferProxy } from '../../../src/eventBuffer/EventBufferProxy';
 import { decompress } from '../../utils/compression';
diff --git a/packages/replay-internal/test/unit/multipleInstances.test.ts b/packages/replay-internal/test/unit/multipleInstances.test.ts
index fc5bc13e03cf..dacd936e0018 100644
--- a/packages/replay-internal/test/unit/multipleInstances.test.ts
+++ b/packages/replay-internal/test/unit/multipleInstances.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import { replayIntegration } from '../../src/integration';
 
 describe('Unit | multipleInstances', () => {
diff --git a/packages/replay-internal/test/unit/session/createSession.test.ts b/packages/replay-internal/test/unit/session/createSession.test.ts
index f6e6850754a5..0072741d6c07 100644
--- a/packages/replay-internal/test/unit/session/createSession.test.ts
+++ b/packages/replay-internal/test/unit/session/createSession.test.ts
@@ -1,4 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import type { MockedFunction } from 'vitest';
+import { afterEach, beforeAll, describe, expect, it, vi } from 'vitest';
 
 import * as Sentry from '@sentry/core';
 
@@ -16,7 +21,7 @@ vi.mock('@sentry/utils', async () => {
   };
 });
 
-type CaptureEventMockType = vi.MockedFunction<typeof Sentry.captureEvent>;
+type CaptureEventMockType = MockedFunction<typeof Sentry.captureEvent>;
 
 describe('Unit | session | createSession', () => {
   const captureEventMock: CaptureEventMockType = vi.fn();
diff --git a/packages/replay-internal/test/unit/session/fetchSession.test.ts b/packages/replay-internal/test/unit/session/fetchSession.test.ts
index 526c9c7969d1..15bd4e02e958 100644
--- a/packages/replay-internal/test/unit/session/fetchSession.test.ts
+++ b/packages/replay-internal/test/unit/session/fetchSession.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeAll, describe, expect, it } from 'vitest';
+
 import { REPLAY_SESSION_KEY, WINDOW } from '../../../src/constants';
 import { fetchSession } from '../../../src/session/fetchSession';
 
diff --git a/packages/replay-internal/test/unit/session/loadOrCreateSession.test.ts b/packages/replay-internal/test/unit/session/loadOrCreateSession.test.ts
index 51f4793c7768..7555625ecb7b 100644
--- a/packages/replay-internal/test/unit/session/loadOrCreateSession.test.ts
+++ b/packages/replay-internal/test/unit/session/loadOrCreateSession.test.ts
@@ -1,4 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import type { MockedFunction } from 'vitest';
+import { afterEach, beforeAll, describe, expect, it, vi } from 'vitest';
 
 import { MAX_REPLAY_DURATION, SESSION_IDLE_EXPIRE_DURATION, WINDOW } from '../../../src/constants';
 import { makeSession } from '../../../src/session/Session';
@@ -51,8 +56,8 @@ describe('Unit | session | loadOrCreateSession', () => {
 
   afterEach(() => {
     WINDOW.sessionStorage.clear();
-    (CreateSession.createSession as vi.MockedFunction<typeof CreateSession.createSession>).mockClear();
-    (FetchSession.fetchSession as vi.MockedFunction<typeof FetchSession.fetchSession>).mockClear();
+    (CreateSession.createSession as MockedFunction<typeof CreateSession.createSession>).mockClear();
+    (FetchSession.fetchSession as MockedFunction<typeof FetchSession.fetchSession>).mockClear();
   });
 
   describe('stickySession: false', () => {
diff --git a/packages/replay-internal/test/unit/session/saveSession.test.ts b/packages/replay-internal/test/unit/session/saveSession.test.ts
index f3861142b113..83584d73a08c 100644
--- a/packages/replay-internal/test/unit/session/saveSession.test.ts
+++ b/packages/replay-internal/test/unit/session/saveSession.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeAll, describe, expect, it } from 'vitest';
+
 import { REPLAY_SESSION_KEY, WINDOW } from '../../../src/constants';
 import { makeSession } from '../../../src/session/Session';
 import { saveSession } from '../../../src/session/saveSession';
diff --git a/packages/replay-internal/test/unit/session/sessionSampling.test.ts b/packages/replay-internal/test/unit/session/sessionSampling.test.ts
index 2121c91e9491..e6cba28efdf7 100644
--- a/packages/replay-internal/test/unit/session/sessionSampling.test.ts
+++ b/packages/replay-internal/test/unit/session/sessionSampling.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import { makeSession } from '../../../src/session/Session';
 import { getSessionSampleType } from '../../../src/session/createSession';
 
diff --git a/packages/replay-internal/test/unit/util/addEvent.test.ts b/packages/replay-internal/test/unit/util/addEvent.test.ts
index 748c2a87b684..91bd29532cc5 100644
--- a/packages/replay-internal/test/unit/util/addEvent.test.ts
+++ b/packages/replay-internal/test/unit/util/addEvent.test.ts
@@ -1,6 +1,10 @@
+/**
+ * @vitest-environment jsdom
+ */
+
 import 'jsdom-worker';
 
-import { vi } from 'vitest';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { BASE_TIMESTAMP } from '../..';
 import { MAX_REPLAY_DURATION, REPLAY_MAX_EVENT_BUFFER_SIZE, SESSION_IDLE_PAUSE_DURATION } from '../../../src/constants';
diff --git a/packages/replay-internal/test/unit/util/createPerformanceEntry.test.ts b/packages/replay-internal/test/unit/util/createPerformanceEntry.test.ts
index f13d72feecf4..f1f9f71bc85c 100644
--- a/packages/replay-internal/test/unit/util/createPerformanceEntry.test.ts
+++ b/packages/replay-internal/test/unit/util/createPerformanceEntry.test.ts
@@ -1,4 +1,4 @@
-import { vi } from 'vitest';
+import { afterAll, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { useFakeTimers } from '../../utils/use-fake-timers';
 
diff --git a/packages/replay-internal/test/unit/util/createReplayEnvelope.test.ts b/packages/replay-internal/test/unit/util/createReplayEnvelope.test.ts
index 287f1f3ccb3f..7b6977fd756a 100644
--- a/packages/replay-internal/test/unit/util/createReplayEnvelope.test.ts
+++ b/packages/replay-internal/test/unit/util/createReplayEnvelope.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import type { ReplayEvent } from '@sentry/types';
 import { makeDsn } from '@sentry/utils';
 
diff --git a/packages/replay-internal/test/unit/util/debounce.test.ts b/packages/replay-internal/test/unit/util/debounce.test.ts
index ae8ad4262053..a9a8f332a2f5 100644
--- a/packages/replay-internal/test/unit/util/debounce.test.ts
+++ b/packages/replay-internal/test/unit/util/debounce.test.ts
@@ -1,9 +1,9 @@
+import { describe, expect, it, vi } from 'vitest';
+
 import { useFakeTimers } from '../../utils/use-fake-timers';
 
 useFakeTimers();
 
-import { vi } from 'vitest';
-
 import { debounce } from '../../../src/util/debounce';
 
 describe('Unit | util | debounce', () => {
diff --git a/packages/replay-internal/test/unit/util/getPrivacyOptions.test.ts b/packages/replay-internal/test/unit/util/getPrivacyOptions.test.ts
index 536ee7d0df21..8595ca6aa1c4 100644
--- a/packages/replay-internal/test/unit/util/getPrivacyOptions.test.ts
+++ b/packages/replay-internal/test/unit/util/getPrivacyOptions.test.ts
@@ -1,4 +1,4 @@
-import { afterEach, beforeEach, describe, vi } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { getPrivacyOptions } from '../../../src/util/getPrivacyOptions';
 
diff --git a/packages/replay-internal/test/unit/util/getReplay.test.ts b/packages/replay-internal/test/unit/util/getReplay.test.ts
index 87ba1e23aded..350688a4e881 100644
--- a/packages/replay-internal/test/unit/util/getReplay.test.ts
+++ b/packages/replay-internal/test/unit/util/getReplay.test.ts
@@ -1,3 +1,5 @@
+import { beforeEach, describe, expect, it } from 'vitest';
+
 import { getCurrentScope } from '@sentry/core';
 import { replayIntegration } from '../../../src/integration';
 import { getReplay } from '../../../src/util/getReplay';
diff --git a/packages/replay-internal/test/unit/util/handleRecordingEmit.test.ts b/packages/replay-internal/test/unit/util/handleRecordingEmit.test.ts
index 975762565e17..592e1647cc31 100644
--- a/packages/replay-internal/test/unit/util/handleRecordingEmit.test.ts
+++ b/packages/replay-internal/test/unit/util/handleRecordingEmit.test.ts
@@ -1,4 +1,9 @@
-import { vi } from 'vitest';
+/**
+ * @vitest-environment jsdom
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
 import type { MockInstance } from 'vitest';
 
 import { EventType } from '@sentry-internal/rrweb';
diff --git a/packages/replay-internal/test/unit/util/isExpired.test.ts b/packages/replay-internal/test/unit/util/isExpired.test.ts
index 2914cf1198d1..199b10d59b1a 100644
--- a/packages/replay-internal/test/unit/util/isExpired.test.ts
+++ b/packages/replay-internal/test/unit/util/isExpired.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import { isExpired } from '../../../src/util/isExpired';
 
 describe('Unit | util | isExpired', () => {
diff --git a/packages/replay-internal/test/unit/util/isSampled.test.ts b/packages/replay-internal/test/unit/util/isSampled.test.ts
index 6dfd163c45c7..3914ffb2487e 100644
--- a/packages/replay-internal/test/unit/util/isSampled.test.ts
+++ b/packages/replay-internal/test/unit/util/isSampled.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, test, vi } from 'vitest';
+
 import { isSampled } from '../../../src/util/isSampled';
 
 // Note Math.random generates a value from 0 (inclusive) to <1 (1 exclusive).
diff --git a/packages/replay-internal/test/unit/util/isSessionExpired.test.ts b/packages/replay-internal/test/unit/util/isSessionExpired.test.ts
index 2ff7e7ef2989..329cc209840d 100644
--- a/packages/replay-internal/test/unit/util/isSessionExpired.test.ts
+++ b/packages/replay-internal/test/unit/util/isSessionExpired.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it } from 'vitest';
+
 import { MAX_REPLAY_DURATION } from '../../../src/constants';
 import { makeSession } from '../../../src/session/Session';
 import { isSessionExpired } from '../../../src/util/isSessionExpired';
diff --git a/packages/replay-internal/test/unit/util/maskAttribute.test.ts b/packages/replay-internal/test/unit/util/maskAttribute.test.ts
index 73bcbaa91395..4a7e5fe4ba7c 100644
--- a/packages/replay-internal/test/unit/util/maskAttribute.test.ts
+++ b/packages/replay-internal/test/unit/util/maskAttribute.test.ts
@@ -1,3 +1,9 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { describe, expect, test } from 'vitest';
+
 import { maskAttribute } from '../../../src/util/maskAttribute';
 
 describe('maskAttribute', () => {
diff --git a/packages/replay-internal/test/unit/util/prepareReplayEvent.test.ts b/packages/replay-internal/test/unit/util/prepareReplayEvent.test.ts
index 78c2c457a02d..b93a8651267c 100644
--- a/packages/replay-internal/test/unit/util/prepareReplayEvent.test.ts
+++ b/packages/replay-internal/test/unit/util/prepareReplayEvent.test.ts
@@ -1,4 +1,4 @@
-import { vi } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
 import { getClient, getCurrentScope, setCurrentClient } from '@sentry/core';
 import type { ReplayEvent } from '@sentry/types';
diff --git a/packages/replay-internal/test/unit/util/throttle.test.ts b/packages/replay-internal/test/unit/util/throttle.test.ts
index 00d394d5b769..eeead6b24941 100644
--- a/packages/replay-internal/test/unit/util/throttle.test.ts
+++ b/packages/replay-internal/test/unit/util/throttle.test.ts
@@ -1,3 +1,5 @@
+import { describe, expect, it, vi } from 'vitest';
+
 import { BASE_TIMESTAMP } from '../..';
 import { SKIPPED, THROTTLED, throttle } from '../../../src/util/throttle';
 import { useFakeTimers } from '../../utils/use-fake-timers';
diff --git a/packages/replay-internal/test/utils/use-fake-timers.ts b/packages/replay-internal/test/utils/use-fake-timers.ts
index 2d5d43bdf338..71f31659b064 100644
--- a/packages/replay-internal/test/utils/use-fake-timers.ts
+++ b/packages/replay-internal/test/utils/use-fake-timers.ts
@@ -2,7 +2,7 @@ import { vi } from 'vitest';
 
 vi.mock('@sentry-internal/browser-utils', async () => ({
   ...(await vi.importActual('@sentry-internal/browser-utils')),
-  setTimeout: (...args) => {
+  setTimeout: (...args: any[]) => {
     return setTimeout.call(global, ...args);
   },
 }));
diff --git a/packages/replay-internal/tsconfig.test.json b/packages/replay-internal/tsconfig.test.json
index 1e96fa6b8945..bb7130d948c0 100644
--- a/packages/replay-internal/tsconfig.test.json
+++ b/packages/replay-internal/tsconfig.test.json
@@ -4,7 +4,7 @@
   "include": ["test/**/*.ts", "vitest.config.ts", "test.setup.ts"],
 
   "compilerOptions": {
-    "types": ["node", "jest"],
+    "types": ["node"],
     "esModuleInterop": true,
     "allowJs": true,
     "noImplicitAny": true,
diff --git a/packages/replay-internal/vitest.config.ts b/packages/replay-internal/vitest.config.ts
index cd592247ba07..976d9c37074d 100644
--- a/packages/replay-internal/vitest.config.ts
+++ b/packages/replay-internal/vitest.config.ts
@@ -6,10 +6,7 @@ export default defineConfig({
   ...baseConfig,
   test: {
     ...baseConfig.test,
-    coverage: {},
-    globals: true,
     setupFiles: ['./test.setup.ts'],
     reporters: ['default'],
-    environment: 'jsdom',
   },
 });