How to make electron app configurable in the release version?

I have created an electron app having angular as frontend.And in backend i have used MySql db. I want to do following things after i make release version of this app:-

1. Make a json file in the release directory which contains info like db name,password,port,or any other info etc.I want this file to work as a config file which can be edited by end user (In the release version)

The changes that users make in the file should be reflected in my app tooLike changing the whole database etcI am not sure how to achieve this.