Spread and rest

export default function App() {
  const amountOfResults = () => {
    return [10, 20];
  };

  const [ start, end ] = amountOfResults();

  const results = amountOfResults();
 
  return (
    <div className="App">
      <p>
        {start} - {end}
      </p>
      <p>{results.join(" - ")}</p>
    </div>
  );
}

  function pagination(numberOfResults, currentPage, itemsPerPage) {
    return {
      total: numberOfResults,
      per_page: itemsPerPage,
      current_page: currentPage,
      last_page: Math.ceil(numberOfResults / itemsPerPage),
      from: (currentPage - 1) * itemsPerPage + 1,
      to:
        currentPage * itemsPerPage < numberOfResults
          ? currentPage * itemsPerPage
          : numberOfResults
    };
  }

  const results = [...Array(100)].map((x) => []);
  const numberOfResults = results.length;
  const currentPage = 5;
  const itemsPerPage = 20;

  const { total, per_page, current_page, last_page, from, to } = pagination(
    numberOfResults,
    currentPage,
    itemsPerPage
  );