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JavaScript Can't read newURL property on Event in TypeScript

Hello there!

I am trying to catch the 'onHashChange' event in TypeScript and to work with the new URL. Here is the code:

JavaScript:
window.addEventListener('hashchange', function(event: HashChangeEvent) {
      console.log(event);
    });

However, the compiler gives this error:

Code:
No overload matches this call.
  Overload 1 of 2, '(type: "hashchange", listener: (this: Window, ev: Event) => any, options?: boolean | AddEventListenerOptions | undefined): void', gave the following error.
    Argument of type '(this: Window, event: HashChangeEvent) => void' is not assignable to parameter of type '(this: Window, ev: Event) => any'.
      Types of parameters 'event' and 'ev' are incompatible.
        Type 'Event' is missing the following properties from type 'HashChangeEvent': newURL, oldURL
  Overload 2 of 2, '(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions | undefined): void', gave the following error.
    Argument of type '(this: Window, event: HashChangeEvent) => void' is not assignable to parameter of type 'EventListenerOrEventListenerObject'.
      Type '(this: Window, event: HashChangeEvent) => void' is not assignable to type 'EventListener'.
        Types of parameters 'event' and 'evt' are incompatible.
          Type 'Event' is not assignable to type 'HashChangeEvent'.

I tried many things and searched a lot in the net but found nothing.

Can someone please help me???

Thank you so much!!!
 
Last edited:
To me the messages seem to suggest that the listener function needs two arguments, one of type Window and one of type Event or HashChangeEvent.
I could be all wrong though, knowing beans about TypeScript or this particular feature. And these messages are terribly unhelpful... sheesh, you might as well go and program in C++ 🙄
 

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