@utilityjs/use-is-mounted/esm/useIsMounted.js

A React hook that returns `true` if the component is mounted.

import * as React from "react";
var useIsMounted = function () {
    var isMountedRef = React.useRef(false);
    React.useEffect(function () {
        isMountedRef.current = true;
        return function () { return void (isMountedRef.current = false); };
    }, []);
    return React.useCallback(function () { return isMountedRef.current; }, []);
};
export default useIsMounted;