Whenever I'm adding a new dependency to a JavaScript app, or setting up the build process of a new app, I ask myself: what exactly are devDependencies? It's time to answer that question in depth.

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Dependencies are packages required for an app to function in production, while devDependencies are needed only for development and testing. The distinction between the two can be crucial depending on how the app runs and the environment. The article discusses various approaches for categorizing dependencies and their practical implications, especially concerning NODE_ENV and security considerations.

Dependencies vs. devDependencies for JavaScript apps

What does it mean to “run in production”?

Practical differences between a regular dependency and a dev dependency

How do I decide what is a dev dependency?

<p>Never understood what the difference is, and for some reason, never bothered to figure out. Thanks for the article :)</p>
