From Deno Blog
Sat, October 10
Deno is joining Cloudflare
Putting ourselves in the best place to build the future of the web
Thu, June 25
Deno 2.9
`deno desktop` for building native desktop apps from web tech, first-class migration from npm/pnpm/yarn/Bun, CSS module imports, snapshot and parameterized testing, smaller `deno compile --bundle` binaries, and Node.js 26 compatibility.
Fri, May 22
Deno 2.8
`import defer`, six new subcommands (`deno transpile`, `deno pack`, `deno bump-version`, `deno ci`, `deno why`, `deno audit fix`), network debugging in Chrome DevTools, framework-aware `deno compile`, and 3.66x faster cold npm installs.
Claw Patrol: an open-source security firewall for agents
Why we needed an agent firewall that speaks more than HTTP.
Sat, April 25
Fresh 2.3: Zero JS by default, View Transitions, and Temporal support
Fresh 2.3 ships true zero-JS pages, View Transitions, CSP nonce support, IP filtering, and Temporal API support in islands.
Wed, February 25
Deno 2.7: Temporal API, Windows ARM, and npm overrides
Deno 2.7 stabilizes the Temporal API, adds Windows on ARM builds, npm overrides in package.json, brotli compression streams, self-extracting compiled binaries, deno create, and dozens of Node.js compatibility improvements.
Tue, February 24
Build a dinosaur runner game with Deno, pt. 6
Add structured logging, distributed traces, and game analytics to your Deno game and learn how to use Deno Deploy's built-in logs, traces, and metrics dashboards.
Tue, February 10
Build a dinosaur runner game with Deno, pt. 5
Capture player identities, add a customization modal, and persist those preferences via Oak + PostgreSQL.
Tue, February 3
Introducing Deno Sandbox
Instant Linux microVMs with defense-in-depth security for running untrusted code.
Deno Deploy is Generally Available
Deno Deploy is now generally available, plus some highlights of new features and tools.
Tue, January 27
Build a dinosaur runner game with Deno, pt. 4
Building a leaderboard with database integration for our example browser-based game.
Tue, December 23
Build a dinosaur runner game with Deno, pt. 3
Adding obstacles, collision detection and game mechanics to our example browser-based game.
Tue, December 16
Build a dinosaur runner game with Deno, pt. 2
This series of posts will guide you through building a simple game using Deno. This post sets up the game loop, user controls and basic game physics.
Fri, December 12
React / Next.js Denial-of-Service Vulnerability: Deno Deploy users protected
A high severity Denial-of-Service (DoS) vulnerability has been found in React Server Components and Next.js. Deno has implemented mitigations in Deno Deploy. Immediate upgrades are required for other users.
Wed, December 10
Deno 2.6: dx is the new npx
This release includes `dx` for running package binaries, more granular permissions, source phase imports, faster type checking with `tsgo`, native source maps, `deno audit`, and much more.
Tue, December 9
Build a dinosaur runner game with Deno, pt. 1
This series of posts will guide you through building a simple game using Deno. Each post corresponds to a stage in the development process, gradually introducing new features and concepts.
Thu, December 4
React Server Functions / Next.js Vulnerability: Deno Deploy users protected
A critical Remote Code Execution (RCE) vulnerability has been found in React Server Functions and Next.js. Deno has implemented mitigations in Deno Deploy. Immediate upgrades are required for other users.
Tue, October 21
My highlights from the new Deno Deploy
Highlights from the new version of Deno Deploy.
Fri, October 17
Deno's Other Open Source Projects
Here’s a roundup of some of our popular open source libraries and how we use them in Deno.
Tue, September 30
How Deno protects against npm exploits
Recent supply chain attacks on npm is a reminder that Node and npm grants unfettered access to your systems. Here's how Deno, with an opt-in security model, protects against these vulnerabilities.
Thu, September 18
Help Us Raise $200k to Free JavaScript from Oracle
Our legal battle over Oracle's claim on the word "JavaScript" is entering the discovery phase. Here's how you can help.
Wed, September 10
Deno 2.5: Permissions in the config file
Simpler permission management with permission sets, new Deno.test APIs for setting up and tearing down test cases, specifying custom headers in WebSocket connections, runtime APIs in deno bundle, and more.
Tue, September 2
Fresh 2.0 Graduates to Beta, Adds Vite Support
Fresh 2.0 beta introduces optional Vite integration - with hot reloading, faster boot times, seamless React aliasing, and the full Vite plugin ecosystem
Wed, July 2
Deno 2.4: deno bundle is back
Deno bundle is back, alongside the addition of bytes and text imports, stabilized built-in OpenTelemetry, a new --preload flag, simplified dependency management with deno update, and more.
Sat, June 28
JavaScript™ Trademark Update
The Trademark Trial and Appeal Board has dismissed our fraud claim against Oracle. We disagree with this decision.
Fri, June 27
What's coming to JavaScript
Here are proposals that were advanced at the last TC39 meeting and what that means for the future of JavaScript.
Fri, May 23
A brief history of JavaScript
In 30 years, JavaScript went from being a little scripting language to one of the world's most popular. Here are key moments to show how it has evolved and where it is headed.
Tue, May 20
Reports of Deno's Demise Have Been Greatly Exaggerated
Addressing recent Deno criticisms and sharing our vision for the future
Thu, May 15
An Update on Fresh
Fresh 2.0 is very much still active. Here’s an update and how to try out the alpha.
Fri, May 2
How Plaid migrated 100 services to a new database platform 5x faster with Deno
Learn how Plaid used Deno to minimize downtime and improve cutover speed during a critical infrastructure migration.
Thu, May 1
Deno 2.3: Improved deno compile, local npm packages, and more
Deno 2.3 adds new features for deno compile and deno fmt, support for using local npm packages, several performance improvements, and more. Here are the biggest highlights.
Fri, April 25
Add JSR packages with pnpm and Yarn
You can now access JSR packages via pnpm and Yarn. Here's how.
Thu, April 10
Zero-config Debugging with Deno and OpenTelemetry
Debugging requires implementation to get the right data for you to resolve issues quickly. Here's how you can use Deno to capture necessary telemetry data without any additional work.
Tue, April 1
Exploring Art with TypeScript, Jupyter, Polars, and Observable Plot
With Deno's Jupyter support, you can explore, interact, and create interactive charts with TypeScript and HTML. Here's a tutorial featuring data of over 130,000 famous artworks.
Mon, March 31
Deno v Oracle Update 3: Fighting the JavaScript Trademark
Oracle has filed a partial motion to dismiss our fraud claim. We’re now waiting on the USPTO to weigh in.
Tue, March 18
Build a custom RAG AI agent in TypeScript and Jupyter
AI and LLMs are certainly useful assistive tools. But what if we need to train LLMs on confidential documents and materials? Here's how you can build your own custom RAG AI agent.
Fri, March 14
How to get deep traces in your Node.js backend with OTel and Deno
Adding meaningful tracing to a Node backend requires additional instrumentation and configuration. Here’s another approach that requires zero additional code.
Sat, March 8
toranoana.deno #20 登録受付中(2025年3月14日)
Deno は東京で行われるミートアップ toranoana.deno #20 に開催協力します。以下、主な詳細とスケジュールの概要です。
Fri, March 7
Node just added TypeScript support. What does that mean for Deno?
Node's experimental TypeScript support will be stabilized in 23.6. Here's what Node's TypeScript integration looks like and how it compares to Deno.
Thu, February 27
The Dino 🦕, the Llama 🦙, and the Whale 🐋
Did you know you can run a large language model with Deno and Jupyter Notebooks? Here's how.
Wed, February 26
Publish a lint rule, get a prize
Deno's new lint plugin system means you can extend the deno lint functionality with your own rules. We're giving prizes for anyone who publishes a lint rule this week. Here's how to participate.
Wed, February 19
Deno 2.2: OpenTelemetry, Lint Plugins, node:sqlite
Deno 2.2 adds built-in OpenTelemetry, a new linter plugin API, node:sqlite, and major improvements to deno check, deno lsp, and deno task.
Fri, February 14
If you're not using npm specifiers, you're doing it wrong
One common way to import npm packages is with transpile services like esm.sh or unpkg.com, which converts npm modules to esm and hosts them on the web. However, since Deno 2, which supports npm natively, we recommend using npm specifiers. Here's why.
Sat, February 8
How Deno's documentation is evolving
Documentation is a critical part of developer experience. Here's how we're improving our documentation and what's to come.
Wed, February 5
Oracle justified its JavaScript trademark with Node.js—now it wants that ignored
Oracle filed a motion to dismiss in response to Deno’s petition to cancel its “JavaScript” trademark. But instead of addressing the real issue—that JavaScript is an open standard with multiple independent implementations—Oracle is trying to stall the process and sidestep accountability.
Tue, February 4
Introducing the JSR open governance board
JSR, a modern open source JavaScript registry, is meant for the greater JavaScript and TypeScript community. We're thrilled to announce its own independent governing body.
Wed, January 29
Intro to Wasm in Deno
Web Assembly, or Wasm, is a great way to increase performance in your web application. Here is an introductory guide to what it is and how you can use it.
Fri, January 24
Announcing OpenAI on JSR
OpenAI, leading development platform for building generative AI products and experiences, now has a JavaScript and TypeScript SDK on JSR.
Tue, January 21
Deno in 2024
We had a busy 2024 with the launch of Deno 2 and JSR, and dozens of features to simplify programming. Here are the biggest updates in 2024 and what's on the horizon.
Fri, January 10
Goodbye WinterCG, welcome WinterTC
WinterCG, the Web Interoperable Runtimes Community Group is moving to Ecma as TC55 to be able to publish standards.