Next.js

Reference for Next.js 16+ App Router projects. Prefer the project's existing conventions, then steer with four leading words: boundary, dynamic by default, pass-through, and generated types.

The adoption, optimization, and development-loop references target Next.js 16.3+. Check their prerequisites before using them on a 16.x project; an upgrade is a separate change, not an implicit part of a runtime check. Prefer installed-version docs in node_modules/next/dist/docs/ (bundled since 16.2). Locate guides by filename because directory prefixes are numbered. For earlier versions, use the matching official upgrade or API documentation. Error pages under /docs/messages/ must be read online.

Branch-specific references, loaded on demand: