The installed supabase-js (2.99, 5 generics) is incompatible with
@supabase/[email protected] (calls it with 3), collapsing the server client's
schema to `never` — the root cause of ~450 of the 586 hidden type errors
(next.config typescript.ignoreBuildErrors masks them all).
- lib/supabase/server.ts: annotate the factory as SupabaseClient<Database>
and bridge the ssr/js impedance mismatch at the one documented boundary;
type the setAll cookie params.
- lib/supabase/proxy.ts, proxy.ts: type the setAll cookie params.
- lib/auth-helpers.ts: parseInput now infers its result from the schema via
z.infer (was a fragile ZodSchema<T> that widened outputs to {}).
- lib/validations.ts: annotate flexibleDateTime's output type.
- types/database.ts: add class_signup_tx / class_cancel_tx RPC signatures
(called but absent; pending full regeneration).
- tsconfig.json: target ES2020 (door-log-logic uses BigInt literals).
- vitest.setup.ts: import beforeAll/afterAll instead of relying on globals.
No runtime behavior change; 639 tests still green. ignoreBuildErrors stays
on until the remaining errors reach zero.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>