Async Programming

// Creating a promise
const myPromise = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("Success!");
  }, 1000);
});

// Consuming a promise
myPromise
  .then(result => console.log(result))
  .catch(error => console.error(error));

// Async function returns a promise
const fetchUser = async (userId) => {
  try {
    const response = await fetch(`/api/users/${userId}`);
    const data = await response.json();
    return data;
  } catch (error) {
    console.error("Failed to fetch user:", error);
    throw error;
  }
};

// Using it
const user = await fetchUser(1);

const robustFetch = async (url) => {
  try {
    const response = await fetch(url);
    if (!response.ok) {
      throw new Error(`HTTP ${response.status}`);
    }
    return await response.json();
  } catch (error) {
    console.error("Request failed:", error);
    // Handle or re-throw
  }
};