chore(deps): Update to Vitest 4

dev-packages/bun-integration-tests/package.json

@@ -23,7 +23,7 @@
   "devDependencies": {
     "@sentry-internal/test-utils": "11.0.0",
     "bun-types": "^1.2.9",
-    "vitest": "^3.2.7"
+    "vitest": "^4.1.11"
   },
   "volta": {
     "extends": "../../package.json"

dev-packages/bun-integration-tests/vite.config.mts

@@ -18,11 +18,7 @@ export default defineConfig({
         }
       : {}),
     pool: 'threads',
-    poolOptions: {
-      threads: {
-        singleThread: true,
-      },
-    },
+    maxWorkers: 1,
     reporters: process.env.DEBUG
       ? ['default', { summary: false }]
       : process.env.GITHUB_ACTIONS

dev-packages/bundler-plugin-integration-tests/package.json

@@ -17,7 +17,7 @@
   "devDependencies": {
     "premove": "^4.0.0",
     "typescript": "~6.0.3",
-    "vitest": "^3.2.7"
+    "vitest": "^4.1.11"
   },
   "volta": {
     "extends": "../../package.json"

dev-packages/bundler-tests/package.json

@@ -15,8 +15,8 @@
     "@rollup/plugin-node-resolve": "^16.0.3",
     "@sentry/browser": "11.0.0",
     "rollup": "^4.60.3",
-    "vite": "^6.4.3",
-    "vitest": "^3.2.7",
+    "vite": "^8.3.1",
+    "vitest": "^4.1.11",
     "webpack": "^5.0.0"
   },
   "volta": {

dev-packages/cloudflare-integration-tests/package.json

@@ -36,8 +36,8 @@
     "@sentry/conventions": "0.24.0",
     "eslint-plugin-regexp": "^3.1.0",
     "prisma": "6.15.0",
-    "vite": "7.3.5",
-    "vitest": "^3.2.7",
+    "vite": "^8.3.1",
+    "vitest": "^4.1.11",
     "wrangler": "4.86.0"
   },
   "volta": {

dev-packages/cloudflare-integration-tests/vite.config.mts

@@ -26,11 +26,7 @@ export default defineConfig({
     // overhead is significantly less.
     pool: 'threads',
     // Run tests sequentially to avoid port conflicts with wrangler dev processes
-    poolOptions: {
-      threads: {
-        singleThread: true,
-      },
-    },
+    maxWorkers: 1,
     sequence: {
       shuffle: true,
     },

package.json

@@ -124,7 +124,7 @@
     "@size-limit/webpack": "~12.1.0",
     "@types/jsdom": "^21.1.6",
     "@types/node": "^18.19.1",
-    "@vitest/coverage-v8": "^3.2.7",
+    "@vitest/coverage-v8": "^4.1.11",
     "deepmerge": "^4.2.2",
     "es-check": "^7.2.1",
     "esbuild": "^0.28.1",
@@ -143,7 +143,7 @@
     "size-limit": "~12.1.0",
     "tsx": "^4.23.0",
     "typescript": "~7.0.2",
-    "vitest": "^3.2.7",
+    "vitest": "^4.1.11",
     "yalc": "^1.0.0-pre.53",
     "yarn-deduplicate": "6.0.2"
   },

packages/astro/package.json

@@ -61,7 +61,7 @@
   },
   "devDependencies": {
     "astro": "^4.16.19",
-    "vite": "^6.4.3"
+    "vite": "^8.3.1"
   },
   "scripts": {
     "build": "run-p build:transpile build:types",

packages/browser/test/profiling/UIProfiler.test.ts

@@ -46,7 +46,10 @@ describe('Browser Profiling v2 trace lifecycle', () => {
       addEventListener() {}
     }
 
-    const mockConstructor = vi.fn().mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => {
+    const mockConstructor = vi.fn().mockImplementation(function (opts: {
+      sampleInterval: number;
+      maxBufferSize: number;
+    }) {
       return new MockProfilerImpl(opts);
     });
 
@@ -348,9 +351,12 @@ describe('Browser Profiling v2 trace lifecycle', () => {
         addEventListener() {}
       }
 
-      (window as any).Profiler = vi
-        .fn()
-        .mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => new MockProfilerImpl(opts));
+      (window as any).Profiler = vi.fn().mockImplementation(function (opts: {
+        sampleInterval: number;
+        maxBufferSize: number;
+      }) {
+        return new MockProfilerImpl(opts);
+      });
 
       const send = vi.fn().mockResolvedValue(undefined);
 
@@ -408,9 +414,12 @@ describe('Browser Profiling v2 trace lifecycle', () => {
         addEventListener() {}
       }
 
-      (window as any).Profiler = vi
-        .fn()
-        .mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => new MockProfilerImpl(opts));
+      (window as any).Profiler = vi.fn().mockImplementation(function (opts: {
+        sampleInterval: number;
+        maxBufferSize: number;
+      }) {
+        return new MockProfilerImpl(opts);
+      });
 
       const send = vi.fn().mockResolvedValue(undefined);
 
@@ -462,9 +471,12 @@ describe('Browser Profiling v2 trace lifecycle', () => {
         addEventListener() {}
       }
 
-      (window as any).Profiler = vi
-        .fn()
-        .mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => new MockProfilerImpl(opts));
+      (window as any).Profiler = vi.fn().mockImplementation(function (opts: {
+        sampleInterval: number;
+        maxBufferSize: number;
+      }) {
+        return new MockProfilerImpl(opts);
+      });
 
       const send = vi.fn().mockResolvedValue(undefined);
 
@@ -521,9 +533,12 @@ describe('Browser Profiling v2 trace lifecycle', () => {
         addEventListener() {}
       }
 
-      (window as any).Profiler = vi
-        .fn()
-        .mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => new MockProfilerImpl(opts));
+      (window as any).Profiler = vi.fn().mockImplementation(function (opts: {
+        sampleInterval: number;
+        maxBufferSize: number;
+      }) {
+        return new MockProfilerImpl(opts);
+      });
 
       // Session 1
       const send1 = vi.fn().mockResolvedValue(undefined);
@@ -747,7 +762,10 @@ describe('Browser Profiling v2 manual lifecycle', () => {
       addEventListener() {}
     }
 
-    const mockConstructor = vi.fn().mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => {
+    const mockConstructor = vi.fn().mockImplementation(function (opts: {
+      sampleInterval: number;
+      maxBufferSize: number;
+    }) {
       return new MockProfilerImpl(opts);
     });
 
@@ -869,9 +887,12 @@ describe('Browser Profiling v2 manual lifecycle', () => {
         addEventListener() {}
       }
 
-      (window as any).Profiler = vi
-        .fn()
-        .mockImplementation((opts: { sampleInterval: number; maxBufferSize: number }) => new MockProfilerImpl(opts));
+      (window as any).Profiler = vi.fn().mockImplementation(function (opts: {
+        sampleInterval: number;
+        maxBufferSize: number;
+      }) {
+        return new MockProfilerImpl(opts);
+      });
 
       const send = vi.fn().mockResolvedValue(undefined);
 

packages/browser/test/profiling/integration.test.ts

@@ -26,10 +26,12 @@ describe('BrowserProfilingIntegration', () => {
       resources: [],
     });
 
-    const mockProfiler = vi.fn().mockImplementation(() => ({
-      stop: stopProfile,
-      addEventListener: vi.fn(),
-    }));
+    const mockProfiler = vi.fn().mockImplementation(function () {
+      return {
+        stop: stopProfile,
+        addEventListener: vi.fn(),
+      };
+    });
 
     // @ts-expect-error this is a mock constructor
     window.Profiler = mockProfiler;

packages/bundler-plugins/package.json

@@ -141,7 +141,7 @@
     "@types/node": "^18.6.3",
     "premove": "^4.0.0",
     "rolldown": "^1.0.0",
-    "vitest": "^3.2.7",
+    "vitest": "^4.1.11",
     "webpack": "5.104.1"
   },
   "volta": {

packages/cloudflare/test/durableobject.test.ts

@@ -806,12 +806,14 @@ describe('instrumentDurableObjectWithSentry', () => {
     const before = flush.mock.calls.length;
 
     const waitUntil = vi.fn();
-    const testClass = vi.fn(context => ({
-      fetch: () => {
-        context.waitUntil(new Promise(res => setTimeout(res)));
-        return new Response('test');
-      },
-    }));
+    const testClass = vi.fn(function (context) {
+      return {
+        fetch: () => {
+          context.waitUntil(new Promise(res => setTimeout(res)));
+          return new Response('test');
+        },
+      };
+    });
     const instrumented = instrumentDurableObjectWithSentry(vi.fn(), testClass as any);
     const context = {
       waitUntil,

packages/cloudflare/test/instrumentations/instrumentWorkerEntrypoint.test.ts

@@ -214,15 +214,17 @@ describe('instrumentWorkerEntrypoint', () => {
     });
 
     const waitUntil = vi.fn();
-    const TestClass = vi.fn((context: ExecutionContext) => ({
-      fetch: () => {
-        // The client is created per request, on the scope forked for that request, so it is only
-        // reachable from inside the handler.
-        testClient = SentryCore.getClient();
-        context.waitUntil(deferred);
-        return new Response('test');
-      },
-    }));
+    const TestClass = vi.fn(function (context: ExecutionContext) {
+      return {
+        fetch: () => {
+          // The client is created per request, on the scope forked for that request, so it is only
+          // reachable from inside the handler.
+          testClient = SentryCore.getClient();
+          context.waitUntil(deferred);
+          return new Response('test');
+        },
+      };
+    });
     const instrumented = instrumentWorkerEntrypoint(vi.fn(), TestClass as unknown as WorkerEntrypointConstructor);
     const context = { ...createMockExecutionContext(), waitUntil };
     const worker = Reflect.construct(instrumented, [context, {}]);

packages/cloudflare/test/request.test.ts

@@ -1172,6 +1172,7 @@ describe('Durable Object (DO) context', () => {
 
 describe('cached client (cacheClient)', () => {
   beforeEach(() => {
+    vi.clearAllMocks();
     _clearGlobalClientCache();
   });
 

packages/core/test/integrations/spanStreaming.test.ts

@@ -11,7 +11,9 @@ const mockSpanBufferInstance = vi.hoisted(() => ({
 }));
 
 const MockSpanBuffer = vi.hoisted(() => {
-  return vi.fn(() => mockSpanBufferInstance);
+  return vi.fn(function () {
+    return mockSpanBufferInstance;
+  });
 });
 
 vi.mock('../../src/tracing/spans/spanBuffer', async () => {

packages/core/test/lib/integrations/http/inject-trace-propagation-headers.test.ts

@@ -55,7 +55,7 @@ describe('injectTracePropagationHeaders', () => {
   });
 
   afterEach(() => {
-    vi.restoreAllMocks();
+    vi.resetAllMocks();
   });
 
   it('injects sentry-trace, traceparent, and baggage headers', () => {

packages/core/test/lib/integrations/supabase.test.ts

@@ -162,6 +162,7 @@ function createMockSupabaseClient(resolveWith: unknown, options?: CreateMockSupa
 
 describe('Supabase Integration', () => {
   beforeEach(() => {
+    vi.clearAllMocks();
     currentScopesMocks.getClient.mockReturnValue(undefined);
     tracingMocks.startedSpans.length = 0;
   });

packages/core/test/lib/utils/meta.test.ts

@@ -1,8 +1,12 @@
-import { describe, expect, it, vi } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
 import { getTraceMetaTags } from '../../../src/utils/meta';
 import * as TraceDataModule from '../../../src/utils/traceData';
 
 describe('getTraceMetaTags', () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
   it('renders baggage and sentry-trace values to stringified Html meta tags', () => {
     vi.spyOn(TraceDataModule, 'getTraceData').mockReturnValueOnce({
       'sentry-trace': '12345678901234567890123456789012-1234567890123456-1',

packages/hono/test/shared/patchAppUse.test.ts

@@ -314,18 +314,19 @@ describe('patchHttpMethodHandlers (inline middleware spans on main app)', () =>
       return result;
     });
     const fakeApp = Object.assign(new Hono(), { query });
+    const middlewareSpy = vi.fn();
     async function queryMiddleware(receivedContext: unknown, next: () => Promise<void>) {
+      middlewareSpy(receivedContext, next);
       expect(receivedContext).toBe(context);
       await next();
     }
-    const middleware = vi.fn(queryMiddleware);
     const handler = vi.fn((receivedContext: unknown) => {
       expect(receivedContext).toBe(context);
       return 'handled';
     });
 
     patchHttpMethodHandlers(fakeApp as unknown as Parameters<typeof patchHttpMethodHandlers>[0]);
-    const registrationResult = fakeApp.query('/test', middleware, handler);
+    const registrationResult = fakeApp.query('/test', queryMiddleware, handler);
 
     expect(registrationResult).toBe(result);
     if (!registeredMiddleware || !registeredHandler) {
@@ -339,7 +340,7 @@ describe('patchHttpMethodHandlers (inline middleware spans on main app)', () =>
 
     expect(startInactiveSpanMock).toHaveBeenCalledTimes(1);
     expect(startInactiveSpanMock).toHaveBeenCalledWith(expect.objectContaining({ name: 'queryMiddleware' }));
-    expect(middleware).toHaveBeenCalledWith(context, next);
+    expect(middlewareSpy).toHaveBeenCalledWith(context, next);
     expect(next).toHaveBeenCalledTimes(1);
     expect(handler).toHaveBeenCalledWith(context);
     expect(handlerResult).toBe('handled');

packages/nextjs/test/config/wrappingLoader.test.ts

@@ -6,7 +6,7 @@ import type { WrappingLoaderOptions } from '../../src/config/loaders/wrappingLoa
 
 vi.mock('fs', { spy: true });
 
-const originalReadfileSync = fs.readFileSync;
+const { readFileSync: originalReadfileSync } = await vi.importActual<typeof fs>('fs');
 
 vi.spyOn(fs, 'readFileSync').mockImplementation((filePath, options) => {
   if (filePath.toString().endsWith('/config/templates/apiWrapperTemplate.js')) {

packages/node/test/transports/http.test.ts

@@ -337,7 +337,9 @@ describe('makeNewHttpTransport()', () => {
     const proxyAgentSpy = vi
       .spyOn(httpProxyAgent, 'HttpsProxyAgent')
       // @ts-expect-error using http agent as https proxy agent
-      .mockImplementation(() => new http.Agent({ keepAlive: false, maxSockets: 30, timeout: 2000 }));
+      .mockImplementation(function () {
+        return new http.Agent({ keepAlive: false, maxSockets: 30, timeout: 2000 });
+      });
 
     it('can be configured through option', () => {
       makeNodeTransport({

packages/node/test/transports/https.test.ts

@@ -184,7 +184,9 @@ describe('makeNewHttpsTransport()', () => {
     const proxyAgentSpy = vi
       .spyOn(httpProxyAgent, 'HttpsProxyAgent')
       // @ts-expect-error using http agent as https proxy agent
-      .mockImplementation(() => new http.Agent({ keepAlive: false, maxSockets: 30, timeout: 2000 }));
+      .mockImplementation(function () {
+        return new http.Agent({ keepAlive: false, maxSockets: 30, timeout: 2000 });
+      });
 
     it('can be configured through option', () => {
       makeNodeTransport({

packages/nuxt/package.json

@@ -70,7 +70,7 @@
     "nitro": "^3.0.260311-beta",
     "nuxi": "^3.25.1",
     "nuxt": "3.21.11",
-    "vite": "^6.4.3"
+    "vite": "^8.3.1"
   },
   "scripts": {
     "build": "run-s build:types build:transpile",