how to host mern app on heroku code example

Example 1: how to host react app on heroku

npm install -g create-react-app
create-react-app my-app
cd my-app
git init
heroku create -b https://github.com/mars/create-react-app-buildpack.git
git add .
git commit -m "react-create-app on Heroku"
git push heroku master
heroku open

Example 2: how to deploy heroku app

I assume you know how to use git.
I also assume you've ran the heroku create command for the app.

First commit the app if you haven't, then run this command:
git push heroku master

If there's an error, then try to fix it.

After that access the website by running this command:
heroku open

And run this command if you encounter an error with the website:
heroku logs --tail