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:

cargo install deno --locked

See deno_install and releases for other options.

Try running a simple program:

deno run https://deno.land/std/examples/welcome.ts