Elysia Type Safe

Elysia is a TypeScript-first web framework optimized for building type-safe, high-performance HTTP servers. It runs on Bun (a fast JavaScript runtime) and Node.js. Unlike traditional frameworks that separate type definitions from runtime logic, Elysia infers types from your code, making endpoints automatically type-safe for client consumption. When you define a route in Elysia, its request/response types are computed at compile time. This eliminates the class of bugs where the server returns data that doesn't match the client's expected type. It's like having a contract between frontend and backend that's enforced by the compiler.