Documentation — the spec, MDN, the TypeScript handbook and the Node docs

Level: 101 · for finding the official answer

One line: The references the pages here cite — ECMA-262, MDN, the TypeScript handbook and TSConfig reference, the Node 24 docs, the web platform standards and the compatibility tables — each with one line on what it is for, every link checked on 2026-09-22.

The official references behind this library: the language specification, the TypeScript and Node.js documentation, the web platform standards, and the tables that say which engine supports what. Lessons cite these by section; this page says what each one is for. Every link was checked with curl on 2026-09-22, returned 200, and is given at its final address after redirects.

The language

• ECMA-262, current draft ↗ — the specification as TC39 edits it, updated as proposals reach stage 4; the draft of 20 September 2026 is ECMAScript 2027. Lessons link its #sec- anchors.
• ECMAScript 2026, ECMA-262 17th edition ↗ — the latest published edition, June 2026, in the HTML form Ecma names as the normative copy.
• ECMA-262 at Ecma International ↗ — the standard's page at Ecma, with a copy of every published edition back to the first, of June 1997.
• ECMA-402, current draft ↗ — the Internationalization API specification: Intl.Segmenter, Intl.NumberFormat, Intl.DateTimeFormat and localeCompare with locales.
• TC39 proposals ↗ — every active proposal, listed by stage.
• TC39 finished proposals ↗ — the proposals that reached stage 4, each with the year of the edition it ships in.
• The TC39 process ↗ — what a proposal must have to enter each stage.
• MDN JavaScript Guide ↗ — tutorial chapters on the language, in reading order.
• MDN JavaScript Reference ↗ — one page per built-in object, operator and statement, each with a browser-compatibility table.

TypeScript

• The TypeScript Handbook ↗ — the official guide to the type system.
• TSConfig reference ↗ — every compiler option, with its default.
• Announcing TypeScript 7.0 ↗ — the release post of 8 July 2026 for the compiler ported to Go: what changed since 5.x and 6.0, the new behaviours, and how to run 6.0 and 7.0 side by side.
• A 10x Faster TypeScript ↗ — the earlier post that announced the port of the compiler to Go.
• microsoft/TypeScript ↗ — the TypeScript repository, where development and discussion of TypeScript 7 continue.
• microsoft/typescript-go ↗ — the staging repository of the Go port; its README says it is closed and will be archived in September 2026.
• typescript-go CHANGES.md ↗ — the intentional differences between the TypeScript-based compiler and the Go one, most of them in how JavaScript files are checked.

Node.js

• Node.js 24 API documentation ↗ — the documentation for Node 24, the version this library's CI runs; the address follows the newest 24.x release, v24.21.0 on the day checked.
• Node.js 24 — Modules: TypeScript ↗ — how Node runs .ts files by stripping types, and which TypeScript features it cannot strip.
• Node.js releases ↗ — the release schedule: which release lines are Current, Active LTS or Maintenance LTS, and when each reaches end of life.

The platform

• HTML Standard ↗ — the WHATWG standard for HTML and the browser APIs defined with it, including script loading, timers, workers and web storage.
• HTML Standard — event loops ↗ — where a browser's tasks, microtasks and rendering steps are defined.
• DOM Standard ↗ — nodes, events and event dispatch, and AbortController with AbortSignal.
• Fetch Standard ↗ — fetch(), requests and responses, and CORS.
• Encoding Standard ↗ — TextEncoder, TextDecoder and the text encodings a browser supports.
• MDN Web APIs ↗ — reference pages for the web APIs, several of which Node also provides.

Compatibility

• node.green ↗ — which ECMAScript features each Node version passes, from test runs; on the day checked its tables ran from ES2015 to ES2025 and included a nightly build.
• ECMAScript compatibility table ↗ — feature-by-feature support for ES2016 and later across compilers and polyfills, desktop and mobile browsers, and server runtimes.
• Can I use ↗ — browser support for web platform and JavaScript features.
• MDN browser-compat-data ↗ — the machine-readable data behind MDN's compatibility tables, covering browsers and JavaScript runtimes.

V8

• V8 blog ↗ — posts from the team behind Node's JavaScript engine on its internals and performance; the newest post on the day checked was from August 2025.
• V8 JavaScript and WebAssembly features ↗ — one explainer per language feature, most of them with a table of which browsers and runtimes support it.