sweetalert2/src/staticMethods/timer.js

A beautiful, responsive, customizable and accessible (WAI-ARIA) replacement for JavaScript's popup boxes, supported fork of sweetalert

import globalState from '../globalState'

/**
 * If `timer` parameter is set, returns number os milliseconds of timer remained.
 * Otherwise, returns null.
 */
export const getTimerLeft = () => {
  return globalState.timeout && globalState.timeout.getTimerLeft()
}