A modern runtime for JavaScript and TypeScript.
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Felipe Cardozo efea61e1bc
tests: update sourcemap tests for npm-only source existence check (#31601)
Update the sourcemap_nonexistent_source test expectation to reflect that
source file existence is only checked for npm packages (for
performance).

Add sourcemap_npm_nonexistent_source test to cover the npm package case
where source maps reference non-existent files and should fall back to
showing the bundle file path in stack traces.
2025-12-15 19:21:01 -03:00
.cargo ci: fix Windows build (#30816) 2025-09-23 00:31:14 +00:00
.devcontainer feat(ext/fetch): add support for fetch on unix sockets (#29154) 2025-05-13 18:06:17 +02:00
.github 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
bench_util 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
cli fix(x): cache on demand when running, resolve packages with only one binary, don't fail on node-gyp if not present (#31619) 2025-12-15 14:19:17 -08:00
docs feat(unstable): typescript-go integration for deno check (#30920) 2025-10-20 09:59:54 -07:00
ext 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
libs 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
runtime 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
tests tests: update sourcemap tests for npm-only source existence check (#31601) 2025-12-15 19:21:01 -03:00
tools ci: update publish script (#31617) 2025-12-15 19:25:33 +00:00
.dlint.json chore: enable no-console dlint rule (#25113) 2024-08-20 15:14:37 -04:00
.dprint.json feat: include @types/node type declarations out of the box (#31502) 2025-12-09 11:58:00 +01:00
.editorconfig chore(tests): Remove vestiges of cli/tests folder (#22712) 2024-03-05 13:49:21 -07:00
.gitattributes chore: move cli/tests/ -> tests/ (#22369) 2024-02-10 20:22:13 +00:00
.gitignore feat(ext/web): transferable {Readable,Writable,Transform}Stream (#31126) 2025-12-08 12:31:43 +00:00
.gitmodules chore(ext/node): reorg node compat test CI check (#29893) 2025-06-27 21:06:18 +09:00
.rustfmt.toml chore: update to edition 2024 (#29923) 2025-07-02 17:59:39 -07:00
Cargo.lock 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
Cargo.toml 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
CLAUDE.md chore: allow triggering pr generation manually, tweak pr generation workflow, add claude.md (#31217) 2025-11-06 20:24:40 +00:00
import_map.json chore: update submodule std version (#30676) 2025-09-11 17:48:32 +09:00
LICENSE.md chore: Happy New Year 2025 (#27509) 2024-12-31 19:12:39 +00:00
README.md chore: update "Build from source" link in README (#29258) 2025-05-12 15:41:53 +09:00
Releases.md 2.6.1 (#31615) 2025-12-15 13:45:57 +01:00
rust-toolchain.toml Revert "chore: Rust 1.91.1 (#31165)" (#31548) 2025-12-10 00:36:30 +00:00

Deno

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the deno mascot dinosaur standing in the rain

Deno (/ˈdiːnoʊ/, pronounced dee-no) is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults and a great developer experience. It's built on V8, Rust, and Tokio.

Learn more about the Deno runtime in the documentation.

Installation

Install the Deno runtime on your system using one of the commands below. Note that there are a number of ways to install Deno - a comprehensive list of installation options can be found here.

Shell (Mac, Linux):

curl -fsSL https://deno.land/install.sh | sh

PowerShell (Windows):

irm https://deno.land/install.ps1 | iex

Homebrew (Mac):

brew install deno

Chocolatey (Windows):

choco install deno

WinGet (Windows):

winget install --id=DenoLand.Deno

Build and install from source

Complete instructions for building Deno from source can be found here.

Your first Deno program

Deno can be used for many different applications, but is most commonly used to build web servers. Create a file called server.ts and include the following TypeScript code:

Deno.serve((_req: Request) => {
  return new Response("Hello, world!");
});

Run your server with the following command:

deno run --allow-net server.ts

This should start a local web server on http://localhost:8000.

Learn more about writing and running Deno programs in the docs.

Additional resources

  • Deno Docs: official guides and reference docs for the Deno runtime, Deno Deploy, and beyond.
  • Deno Standard Library: officially supported common utilities for Deno programs.
  • JSR: The open-source package registry for modern JavaScript and TypeScript
  • Developer Blog: Product updates, tutorials, and more from the Deno team.

Contributing

We appreciate your help! To contribute, please read our contributing instructions.