const myPromise = new Promise<number>((resolve, reject) => {
  reject('unknown error');
  setTimeout(() => {
    resolve(42);
  }, 1000);
});

// myPromise
//   .then((result) => {
//     console.log(result);
//     return result + 1;
//   })
//   .then((data) => console.log('new data: ', data))
//   .catch((error) => console.error('Fehler: ', error))
//   .finally(() => console.log('Promise abgeschlossen'));

async function fetchData() {
  try {
    const result = await myPromise;
    console.log('Daten empfangen: ', result);
  } catch (error) {
    console.log('Fehler: ', error);
  }
}

fetchData();

const promise1 = new Promise((resolve) => setTimeout(() => resolve('A'), 1000));
const promise2 = new Promise((resolve) => setTimeout(() => resolve('B'), 2000));

async function fetchAll() {
  const results = await Promise.all([promise1, promise2]);
  console.log(results);
}

fetchAll();

async function fetchFirst() {
  const result = await Promise.race([promise1, promise2]);
  console.log('Fetch First: ', result);
}

fetchFirst();