What are JavaScript async closures?

Can you explain what async closures are in JavaScript?

Sure! Async closures in JavaScript refer to the combination of asynchronous functions and closures, allowing you to maintain access to variables from an outer function even after it has executed.

How do they work in practice?

In practice, when you create an async function inside another function, it can access the variables of the outer function. This is useful for managing state in asynchronous operations.

Can you give me a code example?

Absolutely! Here's a simple example:

function outerFunction() {
    let count = 0;
    return async function innerFunction() {
        count++;
        console.log(count);
    };
}

const increment = outerFunction();
increment(); // Outputs: 1
increment(); // Outputs: 2