In this video, Chris DeSilva (@desilvadev) explains how to manage Non-Cypress Async Promises. Also, you will get to know when to use the “.then” method in Cypress, which is built-in Cypress to explicitly handle Non Cypress Promises.
By the end of this video, you will learn 
-:
What are Non-Cypress Async Promises?
How to handle Non-Cypress Async Promises using the .then() command?
When to use the .then command in Non-Cypress Promises
How to test Non Cypress Asynchronous Promises?