How to calculate the final screen height on IOS Safari when the screen is rotated?

Question

JavaScript

I do this and get the initial width after rotation, and not the final one. Tried clientHeight, but it's not always correct. Works with setTimeout but how to calculate turn time.

window.addEventListener("orientationchange", () => {
                console.log('Смена');

               // если сравнивать значение высоты и значение полученные в setTimeout. Они не равны. 

                console.log(document.documentElement.clientWidth);
                console.log(document.documentElement.clientHeight);

               // с этим проблем нет

                console.log(window.orientation);
                console.log(screen.orientation);

                setTimeout(()=> {
                    console.log(document.documentElement.clientWidth);
                }, 1000)