In this article, you’ll learn about Node.js and Deno, the differences between CommonJS and ECMAScript modules, using TypeScript with Deno, and faster deployments with Deno Deploy. We’ll conclude with notes to help you decide between using Node.js or Deno for your next development project.

What is Node.js?

Node.js is a cross-platform JavaScript runtime environment that is useful for both servers and desktop applications. It runs a single-threaded event loop registered with the system to handle connections, and each new connection causes a JavaScript callback function to fire. The callback function can handle requests with non-blocking I/O calls. If necessary, it can spawn threads from a pool to execute blocking or CPU-intensive operations and to balance the load across CPU cores.

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