fixup! feat(nextjs): Add @sentry/nextjs/cloudflare

Author: JPeer264

packages/core/src/utils/clientIPAddress.ts

@@ -9,12 +9,12 @@ const IP_HEADER_NAMES = new Set(ipHeaderNames.map(name => name.toLowerCase()));
  * normalized first. Some proxies (for example Azure App Service) add the client port,
  * and RFC 7239 allows a quoted `Forwarded` value and any case for `for=`.
  */
-export function getClientIPAddress(headers: { [key: string]: string | string[] | undefined }): string | null {
+export function getClientIPAddress(headers: { [key: string]: string | string[] | null | undefined }): string | null {
   const normalized: { [key: string]: string } = {};
 
   for (const [key, value] of Object.entries(headers)) {
     const name = key.toLowerCase();
-    if (value === undefined || !IP_HEADER_NAMES.has(name)) {
+    if (value == null || !IP_HEADER_NAMES.has(name)) {
       continue;
     }
 

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

@@ -31,6 +31,10 @@ describe('getClientIPAddress', () => {
     expect(getClientIPAddress({ 'x-forwarded-for': ['unknown', '203.0.113.7:4711'] })).toBe('203.0.113.7');
   });
 
+  it('skips headers whose value is null', () => {
+    expect(getClientIPAddress({ 'x-forwarded-for': null, 'x-real-ip': '198.51.100.1' })).toBe('198.51.100.1');
+  });
+
   it('keeps the header priority order', () => {
     expect(getClientIPAddress({ 'X-Real-IP': '198.51.100.1', 'X-Forwarded-For': '203.0.113.7:4711' })).toBe(
       '203.0.113.7',