Deno
@deno_land
A modern runtime for JavaScript and TypeScript
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We are excited to announce that Deno is joining Cloudflare!
Deno 2.8 ships this week. Our biggest minor release ever.
Node.js compatibility: 42% → 75%+ this year. 500+ Node compat commits since 2.7.
TypeScript 6.0.3, `import defer` support, several new subcommands, catalog workspaces, CPU flamegraphs, and many more.
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Oracle has again extended the deadline in the JavaScript trademark dispute by 60 days
Deno 2.7.14 is out with 120+ bug fixes
Major improvements and fixes to node:http2, node:tls, node:net, node:dns, node:cluster, node:crypto, node:timers, node:stream, Web API, and more
See you next at Deno v2.8
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🍋 Fresh 2.3 is here
🚫 Zero JavaScript by default
🎞️ View Transitions API integration
🕐 Temporal API as island props
🔌 First-class WebSocket support
🔒 CSP nonce injection & IP filtering middleware
📡 OpenTelemetry traceparent in HTML
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Deno v2.7.13 is out!
The big one: `node:http` has been completely rewritten bringing major compatibility and performance improvements for Node.js HTTP workloads.
Also in this release:
- Proper NAPI V8 handle scopes and callback scopes
- Extensive node:http2 fixes
- node:tls improvements: STARTTLS auto-start, validation, JS stream and pipe support
- Lower memory usage for `Deno.Command.output()`
- Restored glibc < 2.27 compat for Linux builds
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Deno v2.7.11 is out with 32 fixes across three patch releases:
- Tons of Node.js compat improvements (crypto ciphers, child_process, workers, TTY on Windows)
- New include/exclude fields for deno compile
- Faster watch mode shutdown (10s -> 500ms)
- Better npm/BYONM package resolution
- Alpha and beta release channel support
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Deno 2.7.8 is here!
- P-521 elliptic curve crypto (sign, verify, ECDH)
- SIMD-accelerated base64 encode/decode via simdutf
- file: and link: dependencies in package.json now supported
- OpenTelemetry console exporter + HTTP span attributes on metrics
- 30+ Node compat fixes: child_process, readline, domain, http2, sqlite and more
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Deno v2.7.6 is out with 78 changes - 7 features, 12 performance improvements, and 59 bug fixes.
- deno eval now auto-detects CJS vs ESM
- New --cpu-prof-flamegraph generates interactive SVG flamegraphs
- 28+ Node.js compat fixes (child_process, crypto, tty, worker_threads)
- TextEncoder/TextDecoder and URLPattern performance optimized
- fs.cpSync moved to Rust, npm lifecycle scripts run in parallel
- HTTP/1.1 stale pooled connections now retried automatically
- structuredClone support for CryptoKey and DOMException
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People building platforms need proper observability tooling. Deno Subhosting gives you that.
Here's a quick demo
Deno Subhosting.
Our infrastructure already powers some huge platforms.
Now it's available to you too.
...and we've optimized postinstall scripts for npm packages to run in parallel for a 100% speed up.
Also shipping in v2.7.6 next week.
TransformStream will be up to 16% faster across the board in Deno v2.7.6. No changes needed in user code.
We're cooking... Deno v2.7.5 is out!
- `fs.cp` moved to Rust for 2x performance boost
- `deno install` handles peer deps faster
- CPU profiling with --cpu-prof flags
- `deno doc` now supports npm packages
- Node compat fixes: ECDH, DiffieHellman, PQC keys, worker_threads, v8 APIs
38 bug fixes total, more here:
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deno is now second place here
Deno v2.7.2 is released
`deno install` is now dramatically faster
Full release notes at:
It's about time!
Configure and monitor your cron tasks with Deno Deploy.
Deno v2.7 is here!
🕛 Temporal API stabilized
🪟 Windows ARM native support
⚙️ npm overrides support
📦 deno compile --self-extracting
🩹 Node compat fixes
...and more!
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Can you spin environments in 200ms with all the dependencies installed and ready to use?
You can with snapshots in Deno Sandbox!
Do the setup once, reuse it forever.
See how in this demo with Python.
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