Node.js

Respect the event loop. Every blocking operation is a scalability bug.

Node.js rewards async-first, stream-oriented code. If your Node.js code fights the event loop, it's wrong.

References

Topic	Reference	Contents
Module system	[`${CLAUDE_SKILL_DIR}/references/modules.md`]	ESM/CJS comparison tables, file extension rules, conditional exports patterns
Event loop	[`${CLAUDE_SKILL_DIR}/references/event-loop.md`]	Phase order, execution priority, blocking operations table, worker pool
Streams	[`${CLAUDE_SKILL_DIR}/references/streams.md`]	Stream types table, pipeline patterns, backpressure details
Error handling	[`${CLAUDE_SKILL_DIR}/references/errors.md`]	Error categories table, global handlers, centralized error handling
Security	[`${CLAUDE_SKILL_DIR}/references/security.md`]	Supply chain threats table, HTTP security headers, process hardening