1.2Setting Up

Install the following before continuing:

• Python 3.10+ from https://python.org
• Node.js 24+ (active LTS) from https://nodejs.org
• TypeScript via npm install -g typescript tsx
• Visual Studio Code from https://code.visualstudio.com with the Python, ESLint, and Prettier extensions

Verify all three:

python --version    # Python 3.10.x or later
node --version      # v24.x.x or later
tsc --version       # Version 5.x.x or later