wix-style-react/dist/es/src/providers/useIsMounted/useIsMounted.js

wix-style-react

import { useRef, useEffect } from 'react'; // Returns a function that checks whether component is still mounted

var useIsMounted = function useIsMounted() {
  var mountedRef = useRef(true);
  useEffect(function () {
    // React performs the cleanup when the component unmounts
    var cleanup = function cleanup() {
      mountedRef.current = false;
    };

    return cleanup;
  }, []);
  return function () {
    return mountedRef.current;
  };
};

export default useIsMounted;