From cdc7c503213eeb0f2ea2f745c62b1f63d1cb9090 Mon Sep 17 00:00:00 2001
From: milaGGL <107142260+milaGGL@users.noreply.github.com>
Date: Tue, 1 Apr 2025 10:10:16 -0400
Subject: [PATCH] fix 'window' reference

---
 .changeset/gentle-rocks-repeat.md         | 6 ++++++
 packages/firestore/externs.json           | 1 +
 packages/firestore/src/local/simple_db.ts | 9 ++++++---
 3 files changed, 13 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/gentle-rocks-repeat.md

diff --git a/.changeset/gentle-rocks-repeat.md b/.changeset/gentle-rocks-repeat.md
new file mode 100644
index 0000000000..462e36659b
--- /dev/null
+++ b/.changeset/gentle-rocks-repeat.md
@@ -0,0 +1,6 @@
+---
+'@firebase/firestore': patch
+'firebase': patch
+---
+
+Fix 'window is not defined' error when calling `clearIndexedDbPersistence` from a service worker
diff --git a/packages/firestore/externs.json b/packages/firestore/externs.json
index f7fbbabeb1..03d19ee8e8 100644
--- a/packages/firestore/externs.json
+++ b/packages/firestore/externs.json
@@ -31,6 +31,7 @@
     "packages/util/dist/src/emulator.d.ts",
     "packages/util/dist/src/environment.d.ts",
     "packages/util/dist/src/compat.d.ts",
+    "packages/util/dist/src/global.d.ts",
     "packages/util/dist/src/obj.d.ts",
     "packages/firestore/src/protos/firestore_bundle_proto.ts",
     "packages/firestore/src/protos/firestore_proto_api.ts",
diff --git a/packages/firestore/src/local/simple_db.ts b/packages/firestore/src/local/simple_db.ts
index 3327f66acb..6d27702e72 100644
--- a/packages/firestore/src/local/simple_db.ts
+++ b/packages/firestore/src/local/simple_db.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import { getUA, isIndexedDBAvailable } from '@firebase/util';
+import { getGlobal, getUA, isIndexedDBAvailable } from '@firebase/util';
 
 import { debugAssert } from '../util/assert';
 import { Code, FirestoreError } from '../util/error';
@@ -24,7 +24,7 @@ import { Deferred } from '../util/promise';
 
 import { PersistencePromise } from './persistence_promise';
 
-// References to `window` are guarded by SimpleDb.isAvailable()
+// References to `indexedDB` are guarded by SimpleDb.isAvailable() and getGlobal()
 /* eslint-disable no-restricted-globals */
 
 const LOG_TAG = 'SimpleDb';
@@ -164,7 +164,10 @@ export class SimpleDb {
   /** Deletes the specified database. */
   static delete(name: string): Promise<void> {
     logDebug(LOG_TAG, 'Removing database:', name);
-    return wrapRequest<void>(window.indexedDB.deleteDatabase(name)).toPromise();
+    const globals = getGlobal();
+    return wrapRequest<void>(
+      globals.indexedDB.deleteDatabase(name)
+    ).toPromise();
   }
 
   /** Returns true if IndexedDB is available in the current environment. */