From 53d3620cff29f54ad1fdec21ef1be7fb52970a31 Mon Sep 17 00:00:00 2001
From: Jeff Emmett <jeffemmett@gmail.com>
Date: Sat, 3 Jan 2026 13:53:31 +0100
Subject: [PATCH] fix: add index signature to TLStoreSnapshot for Automerge
 compatibility
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TypeScript requires index signature for Automerge.Doc generic constraint.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 worker/automerge-r2-storage.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/worker/automerge-r2-storage.ts b/worker/automerge-r2-storage.ts
index 5ef6747..f37dcc0 100644
--- a/worker/automerge-r2-storage.ts
+++ b/worker/automerge-r2-storage.ts
@@ -14,6 +14,7 @@
 import { Automerge, initializeAutomerge } from './automerge-init'
 
 // TLDraw store snapshot type (simplified - actual type is more complex)
+// Index signature required for Automerge.Doc generic constraint
 export interface TLStoreSnapshot {
   store: Record<string, any>
   schema?: {
@@ -21,6 +22,7 @@ export interface TLStoreSnapshot {
     storeVersion: number
     [key: string]: any
   }
+  [key: string]: unknown
 }
 
 /**