Files
TREK/shared
Maurice dbbbd07b1c fix(costs): amounts follow their currency's decimals and format, and payments count on the local day
Several small things in the costs views, on desktop and phone alike:

- The outstanding card no longer says "You're all settled up" while a
  payment is still open in Settle up.
- The custom split shows its suggested shares as a faint placeholder in
  the currency's own form (30000 for won, not 30000.00), so it no longer
  reads like an amount already typed.
- Amount fields take only the decimals the currency has: won and yen take
  none, KWD and the other three-decimal currencies three. A switch of
  currency cuts what was already typed. 1000.555 won was saved as typed,
  listed as 1,001 and reopened as 1001.
- The expense sheet on the phone prints shares and sums with the same
  formatter as the list, with grouping and the currency's decimals.
- A payment recorded with Settle or Settle all is dated on the viewer's
  own day, and one without a date of its own is grouped by its UTC record
  time read on the local calendar. In Seoul before 09:00 it landed on the
  day before.
- "1 expenses need a payer" now uses the plural forms of each language.

Refs #2604
2026-10-12 15:04:32 +02:00
..
2026-06-16 22:22:45 +02:00
2026-06-16 22:22:45 +02:00
2026-08-27 13:22:39 +02:00

@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): via paths in server/tsconfig.json.
  • Client (vite): via resolve.alias in client/vite.config.ts (+ paths for 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.