onunhandledrejection

variable

var onunhandledrejection: ((this: Window, ev: PromiseRejectionEvent) => any) | null

Event handler for unhandled promise rejections. Triggered when a Promise is rejected and no rejection handler is attached to it.

Example

onunhandledrejection = (event) => {
  console.log("Unhandled rejection:", event.reason);
  event.preventDefault(); // Prevents the default handling
};

// This will trigger the event handler
Promise.reject(new Error("Example error"));