Create a new directory for your project and initialize an npm package using `npm init`. Write the actual code for your package, then publish it to the npm registry by logging in with `npm login` and running `npm publish`.
Node.js modules are self-contained pieces of code that can be imported using `require`. The `module.exports` object allows exposing functions, variables, or objects from a module for use in other parts of the application. By understanding how `require` and `module.exports` work, developers can craft robust, modular code that promotes code reuse, maintainability, and scalability.
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