how to delete app on heroku code example
Example 1: heroku cli delete app
$ heroku apps:destroy [YOUR-APP-HERE]
Example 2: heroku delete app
heroku apps:destroy <app_name>
Example 3: 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 4: mongodb add on heroku
$ heroku addons:create mongolab:sandbox