feat(ext/web): implement `AbortSignal.prototype.throwIfAborted()` (#13044)

See whatwg/dom#1034.

1 files changed, 7 insertions, 0 deletions

diff --git a/ext/web/03_abort_signal.js b/ext/web/03_abort_signal.js
index 6b278ba07..d46291b14 100644
--- a/ext/web/03_abort_signal.js
+++ b/ext/web/03_abort_signal.js
@@ -85,6 +85,13 @@
       webidl.assertBranded(this, AbortSignal);
       return this[abortReason];
     }
+
+    throwIfAborted() {
+      webidl.assertBranded(this, AbortSignal);
+      if (this[abortReason] !== undefined) {
+        throw this[abortReason];
+      }
+    }
   }
   defineEventHandler(AbortSignal.prototype, "abort");