import { useCallback, useEffect, useRef } from "react"; export function usePrevious(value: any) { // The ref object is a generic container whose current property is mutable ... // ... and can hold any value, similar to an instance property on a class const ref = useRef(); // Store current value in ref useEffect(() => { ref.current = value; }, [value]); // Only re-run if value changes // Return previous value (happens before update in useEffect above) return ref.current; } export function useToast() { const show = useCallback(() => { console.log("showing toast with element from root"); }, []); return { show }; }