From 1c4aae4842ec750229ac0fa68510f23cf82af04b Mon Sep 17 00:00:00 2001
From: Abe Jellinek <jellinek@berkeley.edu>
Date: Mon, 30 Jun 2025 14:15:53 -0400
Subject: [PATCH] Add Promise.defer() to Bluebird shim

---
 chrome/content/zotero/xpcom/bluebirdShim.mjs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/chrome/content/zotero/xpcom/bluebirdShim.mjs b/chrome/content/zotero/xpcom/bluebirdShim.mjs
index 6ad95ade46..3a4a3932ae 100644
--- a/chrome/content/zotero/xpcom/bluebirdShim.mjs
+++ b/chrome/content/zotero/xpcom/bluebirdShim.mjs
@@ -2,4 +2,13 @@ export default class BluebirdShimPromise extends Promise {
 	static delay(ms) {
 		return new Promise(resolve => setTimeout(resolve, ms));
 	}
+	
+	static defer() {
+		let deferred = {};
+		deferred.promise = new Promise((resolve, reject) => {
+			deferred.resolve = resolve;
+			deferred.reject = reject;
+		});
+		return deferred;
+	}
 }