splitIso reached the time by taking characters 11..16, so "2026-06-11T01:11 PM" became 01:11. The hour survived and the half of the day did not, which is why AM and 24-hour times in the same document imported correctly. The arrival then sorted before the departure and the router rolled it onto the next day, so a three-hour hop was rendered as an overnight. The client has done this properly since #1725; this is the server half, which was never pulled across. normalizeLocalDateTime rewrites a value only when it actually finds a meridiem, so a date-only value, a value carrying an offset and anything the parser does not know come back byte for byte. The mapper has only two exits for a date, toIsoString and splitIso, so this covers all eight types and every emitted field at once. It also stops sameConnection comparing a NaN timestamp, which silently merged unrelated legs into one booking.
@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.