From 56c9f4fecad6119d3354f0903a8e7a6dcdf33a7c Mon Sep 17 00:00:00 2001
From: Sergey Popov <quolpr@gmail.com>
Date: Thu, 2 Sep 2021 15:52:41 +0300
Subject: [PATCH] Fix potential fallback db open race condition

---
 src/indexeddb/file-ops-fallback.js | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/indexeddb/file-ops-fallback.js b/src/indexeddb/file-ops-fallback.js
index 5b1b1fb..7bf05e1 100644
--- a/src/indexeddb/file-ops-fallback.js
+++ b/src/indexeddb/file-ops-fallback.js
@@ -38,24 +38,24 @@ async function openDb(name) {
 // change
 class Persistance {
   constructor(onFallbackFailure) {
-    this._openDb = null;
+    this._openDbPromise = null;
     this.hasAlertedFailure = false;
     this.onFallbackFailure = onFallbackFailure;
   }
 
-  async getDb() {
-    if (this._openDb) {
-      return this._openDb;
+  getDb() {
+    if (this._openDbPromise) {
+      return this._openDbPromise;
     }
 
-    this._openDb = await openDb(this.dbName);
-    return this._openDb;
+    this._openDbPromise = openDb(this.dbName);
+    return this._openDbPromise;
   }
 
   closeDb() {
-    if (this._openDb) {
-      this._openDb.close();
-      this._openDb = null;
+    if (this._openDbPromise) {
+      this._openDbPromise.then((db) => db.close());
+      this._openDbPromise = null;
     }
   }