AsyncGenerator

In TypeScript, an AsyncGenerator is a special type of generator function that can be used to asynchronously generate a sequence of values.

Like a regular generator function, an AsyncGenerator is defined using the function* syntax, but with the addition of the async keyword before the function keyword:

async function* myAsyncGenerator() {  // ...}

An AsyncGenerator function can use the yield keyword to return values one at a time, just like a regular generator. However, because it is an asynchronous function, it can also use the await keyword to pause execution until an asynchronous operation completes before continuing to the next yield statement.

Here is an example of an AsyncGenerator that asynchronously generates a sequence of random numbers:

async function* randomNumbers(count: number): AsyncGenerator<number> {  for (let i = 0; i < count; i++) {    // Wait for a random number to be generated asynchronously    await new Promise(resolve => setTimeout(resolve, 1000));  }}

To use an AsyncGenerator, you can call it like a regular generator and iterate over the values it generates using a for-await-of loop:

async function printRandomNumbers(count: number) {

  for await (const number of randomNumbers(count)) {

    console.log(number);

  }

}

This will asynchronously generate and print count random numbers, one per second.