authelia/web/src/hooks/Mounted.ts

import { useEffect, useRef } from "react";

export function useIsMountedRef() {
    const isMountedRef = useRef(false);
    useEffect(() => {
        isMountedRef.current = true;
        return () => {
            isMountedRef.current = false;
        };
    });
    return isMountedRef;
}