chore(deps): Update to Vitest 4 and Vite 8

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

@@ -24,7 +24,7 @@
     "@sentry-internal/node-integration-tests": "11.0.0",
     "@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/tsconfig.json

@@ -4,7 +4,7 @@
   "include": ["suites/**/*.ts", "node-suites/**/*.ts", "*.ts"],
 
   "compilerOptions": {
-    "lib": ["ES2020"],
+    "lib": ["DOM", "ES2020"],
     "esModuleInterop": true,
     "types": ["bun-types"]
   }

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

@@ -46,11 +46,9 @@ export default defineConfig({
           env: { RUNTIME: 'bun' },
           // Above the 30 second port timeout of the runner on Bun, so a slow start can still pass.
           testTimeout: 45_000,
-          poolOptions: {
-            threads: {
-              singleThread: true,
-            },
-          },
+          maxWorkers: 1,
+          // Vitest requires projects with a different `maxWorkers` to run in their own group.
+          sequence: { groupOrder: 1 },
         },
       },
       {

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/suites/vite/diagnostics-channel/client-build/client/main.ts

@@ -1,3 +1,4 @@
+/// <reference lib="dom" />
 import { streamText } from 'ai';
 
 // The browser bundle also pulls in an orchestrion-instrumented module (`ai`).

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,
     },

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

@@ -23,7 +23,7 @@
   },
   "devDependencies": {
     "@sentry-internal/node-integration-tests": "11.0.0",
-    "vitest": "^3.2.7"
+    "vitest": "^4.1.11"
   },
   "volta": {
     "extends": "../../package.json"

dev-packages/e2e-tests/test-applications/debug-id-sourcemaps/package.json

@@ -14,7 +14,7 @@
   },
   "devDependencies": {
     "rollup": "^4.35.0",
-    "vitest": "^3.2.7",
+    "vitest": "^4.1.11",
     "@sentry/rollup-plugin": "^5.3.0"
   },
   "volta": {

dev-packages/e2e-tests/test-applications/debug-id-sourcemaps/tests/server.test.ts

@@ -28,56 +28,52 @@ function splitFrameContext(frame: SerializedFrame): Record<string, unknown> {
   };
 }
 
-test(
-  'Find symbolicated event on sentry',
-  async ({ expect }) => {
-    const eventId = childProcess.execSync(`node ${path.join(__dirname, '..', 'dist', 'app.js')}`, {
-      encoding: 'utf-8',
-    });
-
-    console.log(`Polling for error eventId: ${eventId}`);
+test('Find symbolicated event on sentry', { timeout: EVENT_POLLING_TIMEOUT }, async ({ expect }) => {
+  const eventId = childProcess.execSync(`node ${path.join(__dirname, '..', 'dist', 'app.js')}`, {
+    encoding: 'utf-8',
+  });
 
-    let timedOut = false;
-    setTimeout(() => {
-      timedOut = true;
-    }, EVENT_POLLING_TIMEOUT);
+  console.log(`Polling for error eventId: ${eventId}`);
 
-    while (!timedOut) {
-      await new Promise(resolve => setTimeout(resolve, 2000)); // poll every two seconds
-      const response = await fetch(`https://sentry.io/api/0/organizations/${sentryTestOrgSlug}/eventids/${eventId}/`, {
-        headers: { Authorization: `Bearer ${authToken}` },
-      });
+  let timedOut = false;
+  setTimeout(() => {
+    timedOut = true;
+  }, EVENT_POLLING_TIMEOUT);
 
-      // This is org scoped, so the auth token needs `org:read` on top of the project scopes.
-      // That never resolves by waiting, so fail loudly rather than timing out.
-      if (response.status === 401 || response.status === 403) {
-        throw new Error(
-          `Event lookup was rejected with ${response.status}: ${await response.text()}. ` +
-            'E2E_TEST_AUTH_TOKEN needs the `org:read` scope.',
-        );
-      }
+  while (!timedOut) {
+    await new Promise(resolve => setTimeout(resolve, 2000)); // poll every two seconds
+    const response = await fetch(`https://sentry.io/api/0/organizations/${sentryTestOrgSlug}/eventids/${eventId}/`, {
+      headers: { Authorization: `Bearer ${authToken}` },
+    });
 
-      // A 404 means the event has not landed yet and a 429 is the shared test org being rate limited.
-      // Both clear up by polling again.
-      if (!response.ok) {
-        expect([404, 429]).toContain(response.status);
-        continue;
-      }
+    // This is org scoped, so the auth token needs `org:read` on top of the project scopes.
+    // That never resolves by waiting, so fail loudly rather than timing out.
+    if (response.status === 401 || response.status === 403) {
+      throw new Error(
+        `Event lookup was rejected with ${response.status}: ${await response.text()}. ` +
+          'E2E_TEST_AUTH_TOKEN needs the `org:read` scope.',
+      );
+    }
 
-      const { event } = await response.json();
-      const exception = event.entries.find((entry: { type: string }) => entry.type === 'exception');
-      const frames: SerializedFrame[] = exception.data.values[0].stacktrace.frames;
-      const topFrame = frames[frames.length - 1];
+    // A 404 means the event has not landed yet and a 429 is the shared test org being rate limited.
+    // Both clear up by polling again.
+    if (!response.ok) {
+      expect([404, 429]).toContain(response.status);
+      continue;
+    }
 
-      if (topFrame === undefined) {
-        throw new Error('Symbolicated event has no stack frames.');
-      }
+    const { event } = await response.json();
+    const exception = event.entries.find((entry: { type: string }) => entry.type === 'exception');
+    const frames: SerializedFrame[] = exception.data.values[0].stacktrace.frames;
+    const topFrame = frames[frames.length - 1];
 
-      expect(splitFrameContext(topFrame)).toMatchSnapshot();
-      return;
+    if (topFrame === undefined) {
+      throw new Error('Symbolicated event has no stack frames.');
     }
 
-    throw new Error('Test timed out');
-  },
-  { timeout: EVENT_POLLING_TIMEOUT },
-);
+    expect(splitFrameContext(topFrame)).toMatchSnapshot();
+    return;
+  }
+
+  throw new Error('Test timed out');
+});

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,