const WithJustAutoRun = React.memo((props: {
  first: Todo;
  second: Todo;
  counter: number;
}) => {

  const rendered = useObservation(() => {
    return (
      <div>
        <h1>
          Obs: {props.counter.toString() + props.first.completed.toString()}
        </h1>
      </div>
    );
  }, [props]);
    
  return <div>{rendered}</div>;
})