Async/Await Pair in Asynchronous Code

async/await

Promises are a quantum leap ahead of callbacks. They allow us to write clean and readable asynchronous code and provide a set of safeguards that can only be achieved with boilerplate code when working with callback-based asynchronous code. However, promises are still suboptimal when it comes to writing sequential asynchronous code. The Promise chain is indeed much better than having callback hell, but still, we have to invoke a then() function and create a new function for each task in the chain. This is still too much for a control flow that’s definitely the most commonly used in everyday programming. JavaScript needed a proper way to deal with the comprehensive asynchronous sequential execution flow, and the answer arrived with the introduction in the ECMAScript standard of async ...