heroku procfile node code example

Example 1: Procfile

web: gunicorn app:app
       ^      |     ^
  gunicorn as | main app name
     server   |

Example 2: deploy react js 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 3: node js procfile heroku starter

web: node app.js

//where app.js is the name of your js server file