Summary

You learned a lot in this chapter about modules and packages for Node.js. Specifically, we covered implementing modules and packages for Node.js, the different module structures we can use, the difference between CommonJS and ES6 modules, managing installed modules and packages, how Node.js locates modules, the different types of modules and packages, how and why to declare dependencies on specific package versions, how to find third-party packages, and we gained a good grounding in using npm or Yarn to manage the packages we use and to publish our own packages.

Now that you've learned about modules and packages, we're ready to use them to build applications, which we'll look at in the next chapter.