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Deno 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.

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

deno --version

// main.ts
function greet(name: string): string {
  return `Hello, ${name}!`
}

console.log(greet("world"))

deno main.ts
Hello, world!