# Deno [![Build Status - Cirrus][]][Build status] [![Twitter handle][]][Twitter badge] [![Discord Chat](https://img.shields.io/discord/684898665143206084?logo=discord&style=social)](https://discord.gg/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. - Supports TypeScript out of the box. - Ships only a single executable file. - Built-in utilities like a dependency inspector (deno info) and a code formatter (deno fmt). - Set of reviewed standard modules that are guaranteed to work with [Deno](https://deno.land/std/). ### Install Shell (Mac, Linux): ```sh curl -fsSL https://deno.land/x/install/install.sh | sh ``` PowerShell (Windows): ```powershell iwr https://deno.land/x/install/install.ps1 -useb | iex ``` [Homebrew](https://formulae.brew.sh/formula/deno) (Mac): ```sh brew install deno ``` [Chocolatey](https://chocolatey.org/packages/deno) (Windows): ```powershell choco install deno ``` [Scoop](https://scoop.sh/) (Windows): ```powershell scoop install deno ``` Build and install from source using [Cargo](https://crates.io/crates/deno): ```sh cargo install deno --locked ``` See [deno_install](https://github.com/denoland/deno_install/blob/master/README.md) and [releases](https://github.com/denoland/deno/releases) for other options. ### Getting Started Try running a simple program: ```sh deno run https://deno.land/std/examples/welcome.ts ``` Or a more complex one: ```ts import { serve } from "https://deno.land/std/http/server.ts"; const s = serve({ port: 8000 }); console.log("http://localhost:8000/"); for await (const req of s) { req.respond({ body: "Hello World\n" }); } ``` You can find a deeper introduction, examples, and environment setup guides in the [manual](https://deno.land/manual). The complete API reference is available at the runtime [documentation](https://doc.deno.land). ### Contributing We appreciate your help! To contribute, please read our [contributing instructions](https://deno.land/manual/contributing). [Build Status - Cirrus]: https://github.com/denoland/deno/workflows/ci/badge.svg?branch=main&event=push [Build status]: https://github.com/denoland/deno/actions [Twitter badge]: https://twitter.com/intent/follow?screen_name=deno_land [Twitter handle]: https://img.shields.io/twitter/follow/deno_land.svg?style=social&label=Follow