Reference

13 pages in this section.

Modules and Imports

Quick reference for ESM and CJS imports, exports, createRequire, and package type in Node.js.

Reference Code Reference Modules Esm

Buffers and Encoding

Quick reference for Buffer allocation, encoding, slicing, TypedArrays, and binary conversion in Node.js.

Reference Code Reference Buffer Encoding

Streams and Pipelines

Quick reference for readable/writable streams, pipeline, transform streams, and backpressure in Node.js.

Reference Code Reference Streams Pipeline

Events and EventEmitter

Quick reference for EventEmitter, once, error events, AbortSignal, and event target patterns in Node.js.

Reference Code Reference Events Eventemitter

Filesystem and Path

Quick reference for fs/promises, streams, path, recursive mkdir, and file URL helpers in Node.js.

Reference Code Reference FS Path

HTTP and Fetch

Quick reference for node:http servers, fetch clients, headers, and JSON APIs in Node.js.

Reference Code Reference Http Fetch

Process and Workers

Quick reference for process env, argv, child_process, worker_threads, and IPC in Node.js.

Reference Code Reference Process Worker Threads

Async Patterns

Quick reference for promises, Promise.all, AbortSignal, queues, and async iteration in Node.js.

Reference Code Reference Async Promises

Errors and Debugging

Quick reference for Error causes, custom errors, assertions, debug logs, and inspector hooks in Node.js.

Reference Code Reference Errors Debugging

CLI Env and Config

Quick reference for argv parsing, env files, config loading, stdin CLIs, and exit codes in Node.js.

Reference Code Reference CLI Env

Testing with Node

Quick reference for node:test, assertions, mocks, subtests, and coverage-oriented patterns.

Reference Code Reference Test Assert

Performance Diagnostics

Quick reference for performance.now, heap samples, CPU profiling flags, and event-loop friendly patterns.

Reference Code Reference Performance Diagnostics

Reference Highlights Summary

A single-page roundup of every highlight bullet from the 12 pages in the Reference section, grouped by source page so you can scan all 60 takeaways without opening each article individually.

Highlights Summary Code Reference

Reference

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Reference