Deno 3 marks a milestone in JavaScript runtime evolution. Created by Ryan Dahl (Node.js creator), Deno learns from past lessons and offers a modern developer experience with native TypeScript, security by default, and a decentralized module system.
What's new in Deno 3
Version 3 introduces a rewritten TypeScript compiler that speeds up compilation by up to 40%. npm module support reaches near-total compatibility with the Node.js ecosystem. Deno 3 also improves deno compile generating even smaller binaries.
Security remains Deno's foundation: the default permission sandbox prevents code from accessing files, network, or environment without explicit authorization. This is critical for applications processing sensitive data.
Ecosystem and tooling
Deno 3 includes a built-in linter, formatter, test runner, and documentation generator. This unified experience reduces project setup to a single deno.json file. Its web-standard compatibility (fetch, Request, Response, WebSocket) enables portable code between server and browser.
If you're looking for a modern runtime with security and first-class TypeScript, Deno 3 deserves your attention. At Vynta, we evaluate your architecture to recommend the best technology for your project.