Dispatch keydown event on Window Object - Jasmine

I am trying to implement tests for my hook, which depending on the type of key, changes its value.

Of course, hook works, but tests aren't..

I cannot dispatchEvent on window object in jasmine!

I get this error:

My hook's code ( of course I simplified it for this question ):

   export function useHook(initialState = false): boolean {
    const [a, setA] = useState(initialState)

    useEffect(() => {
      const fn = () => {
        setA(!a)
      }
      window.addEventListener('keydown', fn)

      return () => window.removeEventListener('keydown', fn)
    }, [a])

    return a
   }

and Tests code:

   import { renderHook } from '@testing-library/react-hooks'

   describe('Describe', () => {
     it(`It`, () => {
       const { result } = renderHook(() => Keyboard.useHook())
       window.dispatchEvent(new KeyboardEvent('keydown'))

       expect(result.current).toBe(false)
     })
   })

Should I mock window object somehow? Maybe, there is better solution for dispatchEvent ( especially keydown )?

Thanks for any help.. :)