Deno Runtime

Overview

Deno is a secure TypeScript runtime built on V8, with built-in tooling and modern JavaScript features. This skill should be invoked when creating JavaScript/TypeScript applications that benefit from TypeScript-first development, built-in testing, and simplified dependency management.

Core Principles

• TypeScript First: Use TypeScript natively without compilation setup
• URL Imports: Import dependencies directly from URLs
• Security by Default: Explicit permissions for file, network, environment access
• Built-in Tools: Use Deno for linting, formatting, testing, and bundling

Preparation Checklist

• Install Deno: curl -fsSL https://deno.land/x/install/install.sh | sh
• Verify installation: deno --version
• Review Deno API differences from Node.js
• Set up editor (VS Code with Deno extension)