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Deno is a runtime environment for JavaScript and TypeScript. Since it’s built to improve upon the earlier version of Node.js, Deno offers significant upgrades to improve security and real-world performance while offering developers modern instrumentation.

In this course, you’ll discover Deno’s main features and explore its similarities and differences in relation with Node.js. You’ll then be led through a series of detailed project examples and practical code exercises to master its runtime.

By the end of the course, you’ll be ready to create professional, highly performant JavaScript or TypeScript applications with Deno.

Master the Deno JavaScript Runtime

Working with Deno is a pleasure, and you’re already familiar with JavaScript and Node.js, the learning curve should be relatively flat. 

It is still too early to say whether Deno will be the Node.js successor, but it looks very promising and has a lot of potential.

If we have an existing critical application in production, we shouldn’t rush to migrate it to Deno yet. Node.js, although far from perfect, has many users and plenty of libraries available. It should continue to run without any problems for a while.

# Modules
Deno still has a modest number of *official* modules developed and maintained by the core team. These modules are available from the standard library. Luckily, the community can provide 3rd party scripts and upload them to the `https://deno.land/x` section. The amount of available modules is growing daily, but since Node.js has more than 20 years of advantage over Deno in this aspect, they have substantially more available modules.

# Final thoughts

For any new small projects, proof of concept projects, or mocks for client applications, we can adopt Deno from day one. In these cases, the benefits are significant, and the development speed can be significantly boosted thanks to Deno’s unique features.

Let's analyze some points to better decide whether migrating our projects from Node.js to Deno might be a good choice.

Conclusion: Should you Migrate to Deno?