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JSGroundwork handwritten · web dev

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Chapters

41 chapters

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Beginner9›

B1Runtime & tooling B2Modules & npm B3File system & paths B4Core HTTP B5Express basics B6Environment & config B7Async in Node B8Error handling B9First API

Intermediate15›

I1Event loop I2EventEmitter I3Streams & buffers I4REST APIs at scale I5API design principles I6Databases I7Caching I8Auth & sessions I9Testing I10Child processes & OS I11Logging & monitoring I12Security fundamentals I13WebSockets I14Background jobs & queues I15Deployment basics

Advanced17›

A1Node internals A2Worker threads & clustering A3Streams at scale A4Performance & profiling A5AsyncLocalStorage A6Scalable architectures A7Message queues A8Serverless A9GraphQL & APIs A10Security in depth A11Native addons A12Observability A13TypeScript at scale A14Build tooling & monorepos A15CI/CD pipelines A16Production readiness A17Advanced HTTP

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Node.js levels

1Beginner 2Intermediate 3Advanced

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JSJavaScript ⑂Git ◎Interview prep ΣDSA in JS SDSystem Design

More topics15›

</>HTML { }CSS ⚛React NNext.js NeNest.js TSTypeScript NoNode.js 🐳Docker DBSQL & Databases ✓Testing 🔒Web Security ☁Cloud & DevOps ◈GraphQL ◆Redis ☸Kubernetes

100%

I2

EventEmitter & the observer pattern

not written yet

This section will cover:

The EventEmitter class — on/emit/once/removeListener
Why http, streams and most of Node's core API extend it
Custom events, error events, the maxListeners warning

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