Prompt don't wait for Exec with login data

[jcubic]

Issue summary

If you have login and you exec to authenticate, the prompt is not executed after login.
So you can get username from the terminal to display it in the prompt.

Expected behavior

Prompt should be executed after login so I can have username in prompt

Actual behavior

I've got undefined as login name in prompt after login

Steps to reproduce

1. Open demo https://codepen.io/jcubic/pen/YzROWeM
2. Instead of login name in prompt there is undefined

Additional notes

This only happen with exec

• Attempt to create unit test

[jcubic]

No unit test was created because I was not able to create a falling test in Node.