function Component(props) {
  const items = props.items;
  const maxItems = props.maxItems;

  const renderedItems = [];
  const seen = new Set();
  const max = Math.max(0, maxItems);
  for (let i = 0; i < items.length; i += 1) {
    const item = items.at(i);
    if (item == null || seen.has(item)) {
      continue;
    }
    seen.add(item);
    renderedItems.push(<div>{item}</div>);
    if (renderedItems.length >= max) {
      break;
    }
  }
  const count = renderedItems.length;
  return (
    <div>
      <h1>{count} Items</h1>
      {renderedItems}
    </div>
  );
}