Learn React with TypeScript 3

Summary

Callback-based asynchronous code can be difficult to read and maintain. Who's spent hours trying to track down the root cause of a bug in callback-based asynchronous code? Or just spent hours trying to understand what a piece of callback-based asynchronous code is trying to do? Thankfully, we now have alternative ways of writing asynchronous code.

Promise-based functions are a great improvement over callback-based asynchronous code because the code is a lot more readable and errors can be handled more easily. The async and await keywords arguably make reading asynchronous code even easier than promised-based function code because it is very close to what the synchronous equivalent would look like.

Modern browsers have a nice function ...