How to handle error code from firebase to js?

Question

JavaScript

Firebase returns an error code such as:

• EMAIL_EXISTS: This mail already exists
  
• EMAIL_NOT_FOUND: No such mail or deleted
  
• INVALID_PASSWORD: Invalid password.
  
• USER_DISABLED: Account disabled by admin
  

How to process them through js/axios
I want to display a block/notification called Errors

Answer 1

Process the server response as usual. Check if the status is !== 200, then throw an error with the values ​​from the response:
According to the error codes, you can add your own error classes to make them more convenient to handle.