Reference material worth bookmarking.
Source of truth for browser-compat-data. Rock solid.
100+ sources. MCP integration in 2026 lets agents query pinned versions.
Standard reference.
Well-edited, versioned with the language.
Authoritative. Multiple version selectors.
Starlight-based, ships doc updates same day as releases. Rust compiler rewrite in progress.
High signal for edge-first stack. Ships changelog per product.
Fast hardlink-based, monorepo-friendly.
API reference per LTS/Current.
Utility-first reference. Rust/Oxide engine.
Learn + Reference split with interactive sandboxes.
Prescriptive how-to on Core Web Vitals, PWAs. Complements MDN.
Powers Claude Code + Claude Agent SDK. Bun.markdown.ansi, headless browser automation.