Why Deno 2.0’s npm compatibility made us drop Node.js 22 for our CLI tools
The team migrated from Node.js 22 to Deno 2.0 for their CLI tools after Deno introduced full npm compatibility, eliminating previous ecosystem limitations. They cited Deno's native TypeScript support, secure-by-default permissions, and reliable single-binary compilation as key advantages. The migration was faster than expected and resulted in reduced development and security review times.
- ▪Deno 2.0 introduced first-class npm compatibility, allowing direct use of npm packages without additional configuration.
- ▪Deno provides native TypeScript support with no build step or config files, reducing development cycle time by approximately 20%.
- ▪Deno’s granular permission model reduced security review time by 40% compared to Node.js, which grants full system access by default.
- ▪The team used Deno’s deno compile to produce smaller, more reliable binaries, reducing average size to 28MB from over 100MB with Node.js pkg.
- ▪Migration from Node.js 22 to Deno 2.0 took 2–3 hours per project due to Deno’s support for CommonJS and npm packages.
- ▪Deno’s built-in tools replaced Node.js features like the test runner and fetch API, with minimal functionality lost.
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