The compatibility play
Deno 3.0 ships with near-complete Node.js compatibility. npm packages just work — no import maps, no flags, no workarounds. Run deno run server.ts and it handles the rest.
This is Ryan Dahl's biggest bet yet: make Deno so compatible with the Node ecosystem that switching is frictionless.
Why it matters
TypeScript-first, secure by default, built-in testing — Deno has always had great ideas. The missing piece was ecosystem compatibility. With 3.0, that excuse is gone.