Deno

Deno is a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust.

Features

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.

Install

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 build dependencies
apt install -y cmake protobuf-compiler # Linux
brew install cmake protobuf # macOS

# Build and install Deno
cargo install deno --locked

See deno_install and releases for other options.

Getting Started

Try running a simple program:

deno run https://examples.deno.land/hello-world.ts

Or setup a simple HTTP server:

Deno.serve((_req) => new Response("Hello, World!"));

More Examples

Additional Resources

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.

Contributing

We appreciate your help!