From cc317d845104a07ee79a95a3dfc5f8e3153dac9d Mon Sep 17 00:00:00 2001
From: Zef Hemel <zef@zef.me>
Date: Fri, 7 Nov 2025 10:43:57 +0100
Subject: [PATCH] Sanity check on KV key building (checking for string type)

---
 client/data/indexeddb_kv_primitives.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/client/data/indexeddb_kv_primitives.ts b/client/data/indexeddb_kv_primitives.ts
index 448c3b64..8a94b447 100644
--- a/client/data/indexeddb_kv_primitives.ts
+++ b/client/data/indexeddb_kv_primitives.ts
@@ -83,6 +83,9 @@ export class IndexedDBKvPrimitives implements KvPrimitives {
 
   private buildKey(key: KvKey): string {
     for (const k of key) {
+      if (typeof k !== "string") {
+        throw new Error(`Key needs to consists of strings: ${key}`);
+      }
       if (k.includes(sep)) {
         throw new Error(`Key cannot contain ${sep}`);
       }