Deno

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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

Scoop
(Windows):

scoop install main/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.

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