Add deprecation notice

Richienb · web-flow · commit d51d89aac7f8 · 2025-09-06T21:07:01.000+12:00
diff --git a/readme.md b/readme.md
@@ -2,6 +2,9 @@
 
 > Create an AbortSignal that aborts after a delay
 
+> [!WARNING]
+> Deprecated! Use [`AbortSignal.timeout(ms)`](https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal/timeout_static#browser_compatibility) instead!
+
 ## Install
 
 ```sh
