TypeScript programming playground Setup Install development / system dependencies (read below) Install dependencies: npm install Run: npm start Development / System dependencies System dependency Required version Description Node.js 20.11.1 JS runtime npm 10.x Node package manager NPM script commands Command Description dev Develop in watch-mode dist:build TS build dist:clean Clean build folder (dist/) lint Lint *.ts* files with ESLint start Build and run watch:js Watch JS files watch:ts Watch TS files