|-- create a dev.env file in the root directory |-- copy .env.example to .env |-- add values to the env variables
src\
|--api
|--controllers\ # Route controllers (controllers layer)
|--helpers\ # Contains helper files
|--middlewares\ # Custom express middlewares
|--models\ # Mongoose models (data layer)
|--routes\ # Routes
|--config\ # Envoriment variables and configuration related things
|--db\ # Database connection
|--app.js # Express app
|--index.js # App entry point