fix: validate AbortSignal instances before calling AbortSignal.any() (#7277) (thanks @Elarwei001)

CHANGELOG.md

@@ -13,6 +13,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- fix(agents): validate AbortSignal instances before calling AbortSignal.any() (#7277) (thanks @Elarwei001)
 - fix(webchat): respect user scroll position during streaming and refresh (#7226) (thanks @marcomarandiz)
 - Security: guard skill installer downloads with SSRF checks (block private/localhost URLs).
 - Media understanding: apply SSRF guardrails to provider fetches; allow private baseUrl overrides explicitly.

src/agents/pi-tools.abort.ts

@@ -12,11 +12,7 @@ function throwAbortError(): never {
  * where the AbortSignal constructor may differ.
  */
 function isAbortSignal(obj: unknown): obj is AbortSignal {
-  if (!obj || typeof obj !== "object") {
-    return false;
-  }
-  const signal = obj as Record<string, unknown>;
-  return typeof signal.aborted === "boolean" && typeof signal.addEventListener === "function";
+  return obj instanceof AbortSignal;
 }
 
 function combineAbortSignals(a?: AbortSignal, b?: AbortSignal): AbortSignal | undefined {