wrap a promise with async await in typescript

In TypeScript, one can wrap a promise with async/await syntax to make the code cleaner and more readable. Here is an example:

index.ts
async function fetchData(url: string) {
  const response = await fetch(url);
  const data = await response.json();
  return data;
}
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In the above example, fetchData function is marked with async keyword which allows us to use await inside the function. The await keyword can be used to wait for a promise to resolve or reject. The fetch function returns a promise that resolves to a Response object. We use await to wait for this promise to resolve and get the Response object. Then, we use the json() method on the Response object which also returns a promise, so we use await again to wait for this promise to resolve and get the data. Finally, we return the data.

Note that when using async/await, the function returns a Promise. So, in the example above, fetchData would return a Promise<any> because we don't know exactly what the data would be. You could replace any with a more specific type to avoid compiler warnings.

Hope this helps!