Elm TS Interop

elm-ts-json is a library that enables type-safe data interchange between Elm and TypeScript by allowing developers to define Encoders and Decoders that also specify TypeScript types. It serves as the foundation for the elm-ts-interop CLI tool, ensuring that serialization between the two languages is explicit, reliable, and well-typed.

Key Features

• TypeScript Type Generation — Automatically generates TypeScript types from Elm Encoders and Decoders, eliminating manual type definitions.
• Explicit Serialization — Encourages explicitly defined Encoders/Decoders similar to elm/json, avoiding implicit generation pitfalls.
• Union Type Support — Handles complex TypeScript types like unions and discriminated unions, matching Elm custom types.
• Port Type Inference — Provides a source of truth for port types in Elm applications, ensuring type safety across boundaries.
• Interop Foundation — Powers the elm-ts-interop CLI tool for seamless Elm-TypeScript integration in projects.

Philosophy

The project emphasizes explicit, type-safe serialization over implicit approaches, aligning with Evan Czaplicki's vision for robust data interchange. It prioritizes clarity and reliability in cross-language communication.