GET and POST both call auth() first and return 401 { error:
Unauthorized } when there is no session, before doing any
validation or DB work. This is the API-side half of route-gating -
middleware.ts handles page routes but deliberately excludes /api,
so API routes verify the session themselves.
Flat permission model only (per CLAUDE.md): this checks logged-in
or not, nothing more granular. No role/permission logic added.
middleware.ts gates page routes by default (redirect to /login when
unauthenticated), except /login itself and Next.js internal asset
paths - config.matcher excludes /api entirely, /_next/static,
/_next/image, and favicon.ico. Default-deny: everything requires login
unless explicitly excluded, including the home page, rather than an
opt-in allowlist new routes could forget to join.
Builds its own lightweight NextAuth instance from auth.config.ts
(no Credentials provider) instead of importing auth from auth.ts, to
stay Edge-Runtime compatible - see auth.config.ts.
API routes are deliberately NOT gated here (config.matcher excludes
/api). Auth.js guidance is to verify the session as close to the data
fetching as possible rather than rely on middleware alone; API route
auth is added directly in each route handler instead (next commit).
This project pins Next.js 14.2.35, which predates the Next.js 16
middleware.ts -> proxy.ts rename, so this stays middleware.ts with a
default export, not proxy.ts.
auth.config.ts holds only the Edge-Runtime-safe parts of the Auth.js
config (session strategy, pages, jwt/session callbacks) with an empty
providers array. auth.ts spreads it and adds the real Credentials
provider on top for use in API routes/Server Components (Node runtime).
Needed for middleware.ts (next commit): the Credentials provider's
authorize() pulls in bcryptjs via verifyUserCredentials(), which is a
Node API not supported on the Edge Runtime that middleware.ts runs on.
Without this split, next build bundles bcryptjs/jose into the Edge
middleware chunk and warns; with it, the build is clean.
toanhoang