From cb2ae021ca8094aa5b4d2e9038f535c3a1c3b53c Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sun, 22 Mar 2026 11:05:43 +0100
Subject: [PATCH] Avoid resolving an `objId` more than once in the `PDFObjects`
 class

Trying to resolve the same `objId` more than once would be a bug elsewhere in the code-base, since that should never happen, hence update the `resolve` method to prevent that.
---
 src/display/pdf_objects.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/display/pdf_objects.js b/src/display/pdf_objects.js
index eccbe6a72..5f8edd82c 100644
--- a/src/display/pdf_objects.js
+++ b/src/display/pdf_objects.js
@@ -100,6 +100,9 @@ class PDFObjects {
    */
   resolve(objId, data = null) {
     const obj = this.#ensureObj(objId);
+    if (obj.data !== INITIAL_DATA) {
+      throw new Error(`Object already resolved ${objId}.`);
+    }
     obj.data = data;
     obj.resolve();
   }