How to start a React-App with Express server


I have created a snap of a basic example Reat-App with an Express back-end. I have the snap creating a daemon starting the Express server by calling:

command: node $SNAP/server.js

But I am confused how to call “React-scripts start” to get the React front-end going?

I’m still new at building React-Apps but if I were to start this application when not in a snap I would call:

node server.js


cd client && yarn start

Not sure how to add this to the snapcraft.yaml apps section?