yarn
yarn run init # Checks file .env (contains database connection)"
.env
contains dev environment variables
yarn start // api on localhost:8081
controllers/ – defines your app routes and their logic
helpers/ – code and functionality to be shared by different parts of the project
middlewares/ – Express middlewares which process the incoming requests before handling them down to the routes
models/ – represents data, implements business logic and handles storage
public/ – contains all static files like images, styles and javascript
views/ – provides templates which are rendered and served by your routes
tests/ – tests everything which is in the other folders
app.js – initializes the app and glues everything together