Node.js Skill

Project Setup & Standards

• Use ES Modules ("type": "module") for new projects.
• Use TypeScript for all non-trivial projects; enable strict mode ("strict": true).
• Pin the Node.js version via .nvmrc or .node-version.
• Follow existing code style and conventions in the project — consistency over strict adherence.
• Apply KISS & DRY, but prioritize consistency with existing code.
• Use Airbnb or StandardJS style guide; enforce with ESLint + Prettier.

Async & Concurrency

• Prefer async/await over raw Promise chains.
• Never mix callbacks and Promises in the same module.
• Handle unhandled rejections: process.on('unhandledRejection', ...).
• Use Promise.all() / Promise.allSettled() for parallel async operations.
• Avoid blocking the event loop — offload CPU-heavy work to Worker Threads.