NodeJS

Avoid common Node.js mistakes — event loop blocking, async error handling, ESM gotchas, and memory leaks.

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Last updated: April 23, 2026

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Topic	File
Callbacks, Promises, async/await, event loop	`async.md`
CommonJS vs ESM, require vs import	`modules.md`
Error handling, uncaught exceptions	`errors.md`
Readable, Writable, Transform, backpressure	`streams.md`
Memory leaks, event loop blocking, profiling	`performance.md`
Input validation, dependencies, env vars	`security.md`
Jest, Mocha, mocking, integration tests	`testing.md`
npm, package.json, lockfiles, publishing	`packages.md`