TypeScript developers constantly wrestle with untyped data from APIs or user inputs. Existing validation libraries are either too bulky or too limited.
Create a zero-dependency runtime type checker that mirrors TypeScript's type syntax. Focus on speed and minimal bundle size.
Monetize through Pro features like custom validators and JSON Schema generation. OSS core drives adoption.
MVP could just handle primitives, arrays, and objects. Gradually add unions, literals etc.
Risk: Established players like Zod dominate mindshare.