Welcome to Deno - Denoland

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

Why Deno?

Deno is TypeScript-ready out of the box. Zero config or additional steps necessary.
Deno is secure by default. Where other runtimes give full access every script they run, Deno allows you to enforce granular permissions.
Deno has a robust built-in toolchain. Unlike Node or browser JavaScript, Deno includes a standard library, along with a first-party linter/formatter, test runner, and more.
Deno is fully compatible with Node and npm.
Deno is fast and reliable.
Deno is open-source.

Quick install

Install the Deno runtime on your system using one of the terminal commands below:

<deno-tabs group-id="operating-systems"> <deno-tab value="mac" label="macOS" default>

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

</deno-tab> <deno-tab value="windows" label="Windows">

In Windows PowerShell:

powershell

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

</deno-tab> <deno-tab value="linux" label="Linux">

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

</deno-tab> </deno-tabs>

Additional installation options can be found here. After installation, you should have the deno executable available on your system path. You can verify the installation by running:

deno --version

First steps

Deno can run JavaScript and TypeScript with no additional tools or configuration required, all in a secure, batteries-included runtime.