What are TypeScript promises and how do they work?

What are TypeScript promises and how do they work?

TypeScript promises are objects that represent the eventual completion (or failure) of an asynchronous operation. They allow you to write cleaner asynchronous code.

Can you explain the different states of a promise?

Sure! A promise can be in one of three states: pending, fulfilled, or rejected. Pending means the operation is still ongoing, fulfilled means it completed successfully, and rejected means it failed.

How do I create a promise in TypeScript?

You can create a promise using the Promise constructor. For example: const myPromise = new Promise((resolve, reject) => { /* async operation */ });.

What is the difference between then and catch?

then is used to handle fulfilled promises, while catch is used to handle rejected promises. You can chain them for better readability.