What are async generators in JavaScript?

Can you explain what async generators are in JavaScript?

Async generators are a special type of generator function that can yield promises, allowing you to work with asynchronous data streams.

How do you define an async generator function?

You define an async generator function using the async function* syntax. For example: async function* myAsyncGen() { ... }.

Can you give me an example of using an async generator?

Sure! Here's a simple example:

async function* fetchData() {
  const data = [1, 2, 3];
  for (const item of data) {
    await new Promise(resolve => setTimeout(resolve, 1000)); // Simulate delay
    yield item;
  }
}

(async () => {
  for await (const value of fetchData()) {
    console.log(value);
  }
})();

What are some use cases for async generators?

Async generators are great for handling streams of data, such as reading files, fetching data from APIs, or processing large datasets incrementally.