run heroku local
from root
run yarn start
from client/
https://medium.com/@maison.moa/setting-up-an-express-backend-server-for-create-react-app-bc7620b20a61
A barebones Node.js app using Express 4.
This application supports the Getting Started on Heroku with Node.js article - check it out.
Make sure you have Node.js and the Heroku CLI installed.
$ git clone https://github.com/heroku/node-js-getting-started.git # or clone your own fork
$ cd node-js-getting-started
$ npm install
$ npm start
Your app should now be running on localhost:5000.
$ heroku create
$ git push heroku master
$ heroku open
or
For more information about using Node.js on Heroku, see these Dev Center articles: