const inputRef = React.useRef<HTMLInputElement | null>(null);
const input = React.useRef<HTMLInputElement>(null);
import { useRef, useLayoutEffect } from "react";
//HTMLInputElement || define the type of element
const element = useRef<HTMLInputElement>(null);
useLayoutEffect(() => {
//object can be null
if (element.current !== null) {
element.current.focus();
}
});
const element = React.useRef<ElementType>(null);