Defines functions for auto session timeout

SessionTimeout.js

let timeStamp;
let warningInactiveInterval = useRef();
let startTimerInterval = useRef();

// start inactive check
let timeChecker = () => {
  startTimerInterval.current = setTimeout(() => {
    let storedTimeStamp = sessionStorage.getItem('lastTimeStamp');
    warningInactive(storedTimeStamp);
  }, 60000);
};

// warning timer
let warningInactive = (timeString) => {
  clearTimeout(startTimerInterval.current);

  warningInactiveInterval.current = setInterval(() => {
    const maxTime = 2; // Maximum ideal time given before logout 
    const popTime = 1; // remaining time (notification) left to logout.

    const diff = moment.duration(moment().diff(moment(timeString)));
    const minPast = diff.minutes();
    const leftSecond = 60 - diff.seconds();

    if (minPast === popTime) {
      setSecond(leftSecond);
    }

    if (minPast === maxTime) {
      clearInterval(warningInactiveInterval.current);
      sessionStorage.removeItem('lastTimeStamp');
      // your logout function here
    }
  }, 1000);
};