Nothing said which Node TREK runs on. The image is node:24, part of CI ran 22 under comments saying 22 matched the server runtime, and the dev guide said "22+". A bare-metal or dev install on an unsupported Node installed without a word and then failed at runtime: isomorphic-dompurify needs ^22.22.2 or ^24.15.0, the plugin jail's --permission flag is new in 22.x. .nvmrc now holds the major the Docker image runs, for nvm/fnm and for every workflow to read. engines in the root and each workspace states the range the runtime dependencies accept, the same one isomorphic-dompurify declares. Without engine-strict npm only warns outside it, so no existing install stops installing.
@trek/shared
Single source of truth for TREK's API contracts, expressed as Zod schemas and consumed by both the server (request validation + inferred DTO types) and the client (typed requests/responses).
This package is part of the incremental NestJS + React 19 migration (see the "Brownfield Rewrite" board). It is intentionally dormant until modules start importing it — adding it changes nothing for users.
Rules
- One folder per domain:
src/<domain>/<domain>.schema.ts(+.spec.ts). - Domain-agnostic building blocks live in
src/common/. - A route is only considered migrated once its contract lives here.
- Schemas are the source of truth; server DTOs and client types are inferred from them
(
z.infer<typeof schema>), never hand-duplicated.
Consumption (dev)
Both apps resolve @trek/shared to this package's TypeScript source:
- Server (
tsx): viapathsinserver/tsconfig.json. - Client (
vite): viaresolve.aliasinclient/vite.config.ts(+pathsfor the type-checker).
Production packaging (Docker / workspace wiring) is introduced in card F2, when the server first depends on this package at runtime. Until then prod builds are untouched.
Not yet here
The canonical error envelope is finalised in card F5 (it must match TREK's current Express error responses byte-for-byte), so it is deliberately not invented in F1.