Deno is a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust.
- Secure by default. No file, network, or environment access, unless explicitly enabled.
- Provides
web platform functionality and APIs,
e.g. using ES modules, web workers, and
fetch()
. - Supports TypeScript out of the box.
- Ships only a single executable file.
- Built-in tooling including
deno test
,deno fmt
,deno bench
, and more. - Includes a set of reviewed standard modules guaranteed to work with Deno.
- Supports npm.
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
Scoop (Windows):
scoop install deno
Build and install from source using Cargo:
# Install the Protobuf compiler
apt install -y protobuf-compiler # Linux
brew install protobuf # macOS
# Build and install Deno
cargo install deno --locked
See deno_install and releases for other options.
deno run https://deno.land/std/examples/welcome.ts
Or setup a simple HTTP server:
Deno.serve((_req) => new Response("Hello, World!"));
- The Deno Manual is a great starting point for additional examples, setting up your environment, using npm, and more.
- Runtime API reference documents all APIs built into Deno CLI.
- Deno Standard Modules do not have external dependencies and are reviewed by the Deno core team.
- deno.land/x is the registry for third party modules.
- Blog is where the Deno team shares important product updates and “how to”s about solving technical problems.