chore(repo): upgrade monorepo to Node.js 24

.changeset/node24-clerk-request-signal.md

@@ -0,0 +1,11 @@
+---
+'@clerk/backend': patch
+'@clerk/react-router': patch
+'@clerk/tanstack-react-start': patch
+---
+
+Fix `Request` cloning and outbound `fetch` to omit cross-realm `AbortSignal`. Node 24's bundled undici tightened the `instanceof AbortSignal` check on `RequestInit.signal`, which broke:
+
+- Cloning framework-specific requests such as `NextRequest` in `@clerk/backend`'s `ClerkRequest`.
+- Subclassed `Request`s passed through `patchRequest` in `@clerk/react-router` and `@clerk/tanstack-react-start`.
+- Frontend API proxying in `@clerk/backend`'s `clerkFrontendApiProxy`, which forwarded the inbound request's signal to the upstream `fetch`. Abort propagation will be restored in a follow-up via an in-realm `AbortController` bridge.

.github/actions/init-blacksmith/action.yml

@@ -4,7 +4,7 @@ inputs:
   node-version:
     description: 'The node version to use'
     required: false
-    default: '22'
+    default: '24.15.0'
   playwright-enabled:
     description: 'Enable Playwright?'
     required: false

.github/actions/init/action.yml

@@ -4,7 +4,7 @@ inputs:
   node-version:
     description: 'The node version to use'
     required: false
-    default: '22'
+    default: '24.15.0'
   playwright-enabled:
     description: 'Enable Playwright?'
     required: false

.github/workflows/ci.yml

@@ -218,7 +218,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - node-version: 22
+          - node-version: 24.15.0
+            test-filter: "**"
+            filter-label: "**"
+          - node-version: 20.19.0
             test-filter: "**"
             filter-label: "**"
 
@@ -257,7 +260,7 @@ jobs:
       - name: Run Typedoc tests
         run: |
           # Only run Typedoc tests for one matrix version and main test run
-          if [ "${{ matrix.node-version }}" == "22" ] && [ "${{ matrix.test-filter }}" = "**" ]; then
+          if [ "${{ matrix.node-version }}" == "24.15.0" ] && [ "${{ matrix.test-filter }}" = "**" ]; then
             pnpm turbo run //#test:typedoc
           fi
         env:
@@ -501,7 +504,7 @@ jobs:
         uses: ./.github/actions/init-blacksmith
         with:
           turbo-enabled: true
-          node-version: 22
+          node-version: 24.15.0
           turbo-signature: ${{ secrets.TURBO_REMOTE_CACHE_SIGNATURE_KEY }}
           turbo-summarize: ${{ env.TURBO_SUMMARIZE }}
           turbo-team: ${{ vars.TURBO_TEAM }}

.github/workflows/release.yml

@@ -524,7 +524,7 @@ jobs:
 
     strategy:
       matrix:
-        version: [22] # NOTE: 18 is cached in the main release workflow
+        version: [24] # NOTE: 20 is cached in the main release workflow
 
     steps:
       - name: Checkout Repo

.nvmrc

@@ -1 +1 @@
-22.11.0
+24.15.0

package.json

@@ -152,7 +152,7 @@
   },
   "packageManager": "pnpm@10.33.0+sha512.10568bb4a6afb58c9eb3630da90cc9516417abebd3fabbe6739f0ae795728da1491e9db5a544c76ad8eb7570f5c4bb3d6c637b2cb41bfdcdb47fa823c8649319",
   "engines": {
-    "node": ">=22.11.0",
+    "node": ">=24.15.0",
     "pnpm": ">=10.33.0"
   },
   "pnpm": {

packages/backend/src/__tests__/proxy.test.ts

@@ -572,7 +572,11 @@ describe('proxy', () => {
       expect(response.status).toBe(200);
     });
 
-    it('propagates abort signal to upstream fetch', async () => {
+    it('omits signal from upstream fetch (Node 24 undici cross-realm AbortSignal)', async () => {
+      // Node 24's bundled undici tightened the instanceof AbortSignal check on
+      // RequestInit.signal, which throws on cross-realm signals carried by
+      // framework Request subclasses. Until we bridge abort propagation via an
+      // in-realm AbortController, the signal is intentionally omitted.
       const mockResponse = new Response(JSON.stringify({}), { status: 200 });
       mockFetch.mockResolvedValue(mockResponse);
 
@@ -587,7 +591,7 @@ describe('proxy', () => {
       });
 
       const [, options] = mockFetch.mock.calls[0];
-      expect(options.signal).toBe(request.signal);
+      expect(options.signal).toBeUndefined();
     });
 
     it('includes Cache-Control: no-store on error responses', async () => {

packages/backend/src/proxy.ts

@@ -297,12 +297,15 @@ export async function clerkFrontendApiProxy(request: Request, options?: Frontend
 
   try {
     // Make the proxied request
-    // TODO: Consider adding AbortSignal.timeout(30_000) via AbortSignal.any()
+    // TODO: Restore abort cascade via an in-realm AbortController bridge,
+    // and consider adding AbortSignal.timeout(30_000) via AbortSignal.any().
+    // `request.signal` is intentionally omitted: Node 24's bundled undici
+    // tightened the instanceof AbortSignal check on RequestInit.signal, which
+    // rejects cross-realm signals carried by framework Request subclasses.
     const fetchOptions: RequestInit = {
       method: request.method,
       headers,
       redirect: 'manual',
-      signal: request.signal,
     };
 
     // Only set duplex when body is present (required for streaming bodies)

packages/backend/src/tokens/clerkRequest.ts

@@ -26,7 +26,25 @@ class ClerkRequest extends Request {
     // https://github.com/nodejs/undici/issues/2155
     // https://github.com/nodejs/undici/blob/7153a1c78d51840bbe16576ce353e481c3934701/lib/fetch/request.js#L854
     const url = typeof input !== 'string' && 'url' in input ? input.url : String(input);
-    super(url, init || typeof input === 'string' ? undefined : input);
+    // When cloning a Request by passing it as init, hide its `signal`. Undici's
+    // Request constructor in Node 24 performs a strict instanceof check on the
+    // signal and rejects ones from a different realm (e.g. NextRequest). Using a
+    // Proxy keeps property access lazy so environments that don't implement
+    // optional getters (e.g. Cloudflare Workers' Request lacks `cache`) still work.
+    let cloneInit: RequestInit | undefined;
+    if (init) {
+      cloneInit = init;
+    } else if (typeof input !== 'string') {
+      cloneInit = new Proxy(input as Request, {
+        get(target, prop) {
+          if (prop === 'signal') {
+            return undefined;
+          }
+          return Reflect.get(target, prop, target);
+        },
+      }) as unknown as RequestInit;
+    }
+    super(url, cloneInit);
     this.clerkUrl = this.deriveUrlFromHeaders(this);
     this.cookies = this.parseCookies(this);
   }

packages/react-router/src/server/utils.ts

@@ -135,12 +135,14 @@ export const wrapWithClerkState = (data: any) => {
  * @internal
  */
 export const patchRequest = (request: Request) => {
+  // Omit `signal` from the clone: Node 24's bundled undici tightened the
+  // instanceof AbortSignal check, which rejects cross-realm signals (e.g.
+  // those carried by framework Request subclasses).
   const clonedRequest = new Request(request.url, {
     headers: request.headers,
     method: request.method,
     redirect: request.redirect,
     cache: request.cache,
-    signal: request.signal,
   });
 
   // If duplex is not set, set it to 'half' to avoid duplex issues with unidici

packages/tanstack-react-start/src/__tests__/patchRequest.test.ts

@@ -45,14 +45,12 @@ describe('patchRequest', () => {
     expect(cloned.cache).toBe('no-cache');
   });
 
-  it('forwards signal aborts from the original request', () => {
-    const controller = new AbortController();
-    const original = new Request('https://example.com/', { signal: controller.signal });
-    const cloned = patchRequest(original);
-    expect(cloned.signal.aborted).toBe(false);
-    controller.abort();
-    expect(cloned.signal.aborted).toBe(true);
-  });
+  // The previous "forwards signal aborts" regression test cannot run under Node
+  // 24 + jsdom + undici: constructing `new Request(url, { signal })` with any
+  // AbortSignal throws TypeError due to undici's tightened cross-realm
+  // instanceof check. patchRequest intentionally omits the signal to avoid that
+  // error; verifying the trade-off in a unit test isn't possible in this
+  // environment.
 
   it('clones POST requests without forwarding the body', () => {
     // patchRequest deliberately omits `body` from the cloned init (see #7020)

packages/tanstack-react-start/src/server/utils/index.ts

@@ -69,12 +69,17 @@ export function getResponseClerkState(requestState: RequestState, additionalStat
  * @internal
  */
 export const patchRequest = (request: Request) => {
+  // Omit `signal` from the clone: Node 24's bundled undici tightened the
+  // instanceof AbortSignal check on RequestInit.signal and rejects any signal
+  // it does not recognize as its own — including the standard AbortSignal from
+  // framework Request subclasses or from `new AbortController()`. Until the
+  // ecosystem stabilizes, abort propagation through this clone is intentionally
+  // dropped. See packages/backend/src/proxy.ts for the same workaround.
   const clonedRequest = new Request(request.url, {
     headers: request.headers,
     method: request.method,
     redirect: request.redirect,
     cache: request.cache,
-    signal: request.signal,
   });
 
   // If duplex is not set, set it to 'half' to avoid duplex issues with unidici