Posts tagged “TypeScript”

vi.mock hoisting, partial mocks, timers, fetch stubs, and when to prefer integration tests over deep module mocks.

useInfiniteQuery, stable pageParam, flattening pages, bi-directional scroll, and cache invalidation when lists mutate.

Schema as code, migrations, relations vs manual joins, SQL-like query builder, and comparing Drizzle to Prisma for control freaks.

Procedures, routers, context, Zod input validation, React Query integration, and boundaries between BFF tRPC and public REST.

From Pick and Omit to satisfies, mapped types, and when to reach for conditional types—patterns for APIs, forms, and component libraries without drowning in generics.

When a small store beats Context, slices and middleware, persist middleware caveats, and passing initial state from RSC without duplicate fetches.

openapi-typescript for paths and operations, Orval for React Query hooks, runtime validation with Zod, and CI gates so generated code never drifts from production APIs.

launch.json recipes for Vitest and Jest, attaching to Nest/Express with --inspect, compound configs, env files, and source-map pitfalls in monorepos.