Can you attach an asynchronous callback to an EventEmitter in TypeScript or JavaScript?
someEmitter.on("anEvent", async () => console.log("hello"));If so, does using an async function guarantee that the function will run asynchronously? Also, what are the reasons for not using an async function with an EventEmitter?
Can you use an async callback with an EventEmitter in TypeScript or JavaScript?
Absolutely! You can pass an async function as a callback to an eventEmitter, allowing you to utilize await within the callback. However, this does not automatically make your function asynchronous.
It's important to note that using an async function as a callback will only affect operations within the callback itself. The eventEmitter will trigger the callback when the event occurs, but it won't handle any promises returned by the callback function.
So, while you can utilize await within the callback for internal logic, it doesn't change the overall behavior of the eventEmitter outside of the callback. It's a useful tool for managing asynchronous tasks within the callback function.
Will assigning an async callback make the function execute asynchronously?
No, simply declaring a function as async doesn't alter how it is executed. If your function contains synchronous code, it will still run synchronously regardless of being marked as async.
It's worth understanding that marking a function as async primarily affects what you can do within the function and enforces returning a promise. The execution nature of the function remains consistent - synchronous code behaves as such whether inside an async function or not. It's advisable to delve deeper into the concept of async functions for better comprehension.
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