Why have a config folder in a Node.js project?
To centralize env vars, database connection, and app-level setup. Keeping config separate from logic prevents env values from being scattered across the codebase.
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More FAQs in How to Structure a Node.js Project Folder: A Practical Layout
Separate folders for config, routes, controllers, models, middlewares, and utils. Each file has one job. This is separation of concerns and keeps the codebase maintainable.
Routes declare the endpoints and bind them to controllers. Controllers handle the request/response logic and call models. Routes are the map; controllers are the handlers.
In a utils folder. Things like the database connection, logger, email sender, and other helpers that multiple modules use live in utils.
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