do not save empty updates - fixes yjs#31

raineorshine · Jun 16, 2023 · 5e0917e · 5e0917e · micrology · Jun 29, 2023
1 parent 41a5e59
commit 5e0917e
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/y-indexeddb.js b/src/y-indexeddb.js
@@ -84,7 +84,12 @@ export class IndexeddbPersistence extends Observable {
       /**
        * @param {IDBObjectStore} updatesStore
        */
-      const beforeApplyUpdatesCallback = (updatesStore) => idb.addAutoKey(updatesStore, Y.encodeStateAsUpdate(doc))
+      const beforeApplyUpdatesCallback = (updatesStore) => {
+        const update = Y.encodeStateAsUpdate(doc)
+        // Uint8Array([0,0]) is an empty update and can be skipped
+        if (update.length <= 2) return
+        return idb.addAutoKey(updatesStore, update)
+      }
       const afterApplyUpdatesCallback = () => {
         if (this._destroyed) return this
         this.synced = true