Web Script Abort Controller

I need a small, self-contained solution that lets me instantly terminate any JavaScript that is currently executing on a webpage. The focus is strictly on halting running JS—no need to touch HTTP requests, CSS animations, or other assets.

The controller should work as a drop-in utility I can trigger programmatically (or via a simple UI button) on any site I’m visiting, whether through a browser extension, bookmarklet, or another lightweight approach you may suggest. When activated, it must cleanly stop all synchronous and asynchronous JS execution—timeouts, intervals, promises, event listeners, the lot—without forcing a full page reload.

I’m aiming to have this ready ASAP, so please outline how you would:

• Detect and kill currently active JavaScript execution contexts
• Prevent queued callbacks from firing after the abort
• Keep page content that has already rendered stable and interactive

A concise codebase, clear usage instructions, and a brief explanation of limitations will be the key deliverables.