Are all Node.js core modules included?

Yes. All core modules are documented: fs, http, https, path, crypto, stream, events, buffer, child_process, cluster, and more. Each module includes method signatures, options, and examples.

Which Node.js version is documented?

Documentation covers the LTS (Long Term Support) version. This is what most production Node.js deployments use. Experimental features are documented but clearly marked.

What about advanced APIs like async hooks?

The async_hooks, worker_threads, and performance modules are documented. Understanding these APIs helps with building performant Node.js applications.

Documentation

Node.js Documentation Offline

Q: Does it include streams documentation?

Yes. The streams documentation covers readable, writable, duplex, and transform streams. Backpressure, piping, and the streams API are fully documented.

Complete Node.js API reference and guides. Core modules, async patterns, and server-side JavaScript documentation available offline on your mobile device.

The Value

Why Node.js Docs Offline Matter

Node.js powers a significant portion of web backend infrastructure. Its event-driven, non-blocking architecture requires understanding core modules that behave differently from browser JavaScript.

The Node.js API surface is large. Streams alone have enough nuance to fill a book. The fs module has both callback and promise-based APIs. Knowing which methods are synchronous versus asynchronous matters for performance.

Quick access to API details matters. When you are debugging a production issue or building a new service, you need the exact method signature and behavior—not a Stack Overflow answer from three versions ago.

File System

fs, path

Networking

http, https, http2

Cryptography

crypto, tls

Streams & Events

stream, events

Concurrency

child_process, worker_threads, cluster

Diagnostics

v8, perf_hooks, async_hooks

50+

Core Modules

Complete

API Coverage

Included

Guides

Weekly

Last Updated

Coverage

Core Module Documentation

Every core Node.js module is documented with method signatures, parameter types, and return values. Options objects are enumerated. Error conditions are specified.

The fs module alone covers file reading, writing, watching, permissions, and the newer promises API. Understanding fs.readFile vs fs.readFileSync vs fs/promises is documented clearly.

Streams documentation is comprehensive. Readable, writable, duplex, and transform streams. Backpressure handling. The pipeline utility. All the knowledge needed to handle large data efficiently.

// fs module APIs

fs.readFile(path, options, callback)

fs.readFileSync(path, options)

fs.promises.readFile(path, options)

// stream types

stream.Readable

stream.Writable

stream.Duplex

stream.pipeline()

Use Cases

Backend Development Reference

HTTP Servers

The http and https modules for building web servers. Request and response objects. Headers, status codes, and body handling. Foundation knowledge even when using Express or Fastify.

Data Processing

Streams for processing large files without loading everything into memory. Buffer for binary data. The zlib module for compression. Essential for data pipelines.

Security

The crypto module for hashing, encryption, and key generation. TLS configuration for secure connections. Certificate handling. Security matters and the docs explain it.

Performance

Worker threads for CPU-intensive tasks. The cluster module for multi-process servers. Performance hooks for profiling. Diagnostics for understanding bottlenecks.

Async Patterns Documented

Node.js has evolved through callback, promise, and async/await patterns. The docs cover all three.

1

Callbacks

The original Node.js pattern. Error-first callbacks are documented for every async function.

2

Promises

Modern APIs like fs/promises. util.promisify for converting callbacks. Promise-based patterns.

3

Async/Await

The current recommended pattern. Works with promise-based APIs. Clean, readable async code.

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