typescript-conventions

Framework-neutral TypeScript conventions covering strictness and tsconfig inheritance from a shared base config, unknown over any, non-null assertions, @ts-expect-error with a reason, type vs interface, no enums with an as const alternative, import type, naming, discriminated unions, type guards, satisfies, utility types, schema-derived types (Zod), API response typing, catch clause errors, module augmentation, generics, branded types, and where types live. Load when writing or reviewing any TypeScript, defining shared types, or configuring tsconfig.