Folder Structure

src
└─── app.js    # Entry point for application
└─── config    # Application environment variables and secrets
└─── interfaces  # Application interfaces
└─── controllers  # Express controllers for routes, respond to client requests, call services
└─── loaders    # Handles all startup processes
└─── middlewares # Operations that check or manipulate request prior to controller utilizing
└─── models    # Database models
└─── routes     # Express routes that define API structure
└─── services   # Encapsulates all business logic
└─── test     # Tests go here
└─── utils     # App utilities