From 68bb5330835529c37ffe362e7528bc5b88d5416e Mon Sep 17 00:00:00 2001
From: Jaka Centa <jaka.centa@gmail.com>
Date: Wed, 1 Jul 2026 14:20:40 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=A5=20fix:=20Firebase=20CDN=20Initiali?=
 =?UTF-8?q?zation=20Under=20tsdown=20CJS=20Interop=20(#14046)?=
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The `@librechat/api` build migrated to tsdown (rolldown/oxc) in #13595.
tsdown externalizes third-party deps and uses strict CJS interop, so a
default import of the Firebase v9+ modular SDK — whose CJS entry is
`__esModule`-marked with only named exports and no `default` — resolves
to `undefined`. `firebase.initializeApp(...)` then throws:

  TypeError: Cannot read properties of undefined (reading 'initializeApp')

crashing startup whenever the Firebase file strategy is configured
(`fileStrategy: firebase` or a granular `fileStrategies` entry).

Switch to the idiomatic modular named import (`initializeApp`) and use
the already-imported `FirebaseApp` type for the return annotation.
---
 packages/api/src/cdn/firebase.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/api/src/cdn/firebase.ts b/packages/api/src/cdn/firebase.ts
index 066f295c5d..7418a52508 100644
--- a/packages/api/src/cdn/firebase.ts
+++ b/packages/api/src/cdn/firebase.ts
@@ -1,4 +1,4 @@
-import firebase from 'firebase/app';
+import { initializeApp } from 'firebase/app';
 import { getStorage } from 'firebase/storage';
 import { logger } from '@librechat/data-schemas';
 import type { FirebaseStorage } from 'firebase/storage';
@@ -7,7 +7,7 @@ import type { FirebaseApp } from 'firebase/app';
 let firebaseInitCount = 0;
 let firebaseApp: FirebaseApp | null = null;
 
-export const initializeFirebase = (): firebase.FirebaseApp | null => {
+export const initializeFirebase = (): FirebaseApp | null => {
   if (firebaseApp) {
     return firebaseApp;
   }
@@ -31,7 +31,7 @@ export const initializeFirebase = (): firebase.FirebaseApp | null => {
     return null;
   }
 
-  firebaseApp = firebase.initializeApp(firebaseConfig);
+  firebaseApp = initializeApp(firebaseConfig);
   logger.info('Firebase CDN initialized');
   return firebaseApp;
 };