My use case: provide a single source of truth — a single codebase for a custom SDK.

The SDK will:

• Provide public functions/methods for clients (integrators of this SDK):

  • Web app (TypeScript or JavaScript)
  • Android (Kotlin)
  • iOS (Swift)

• Export models (objects with typed fields) for integrators to use as inputs and outputs of the public functions

• Handle, under the hood:

  • Communication with the server using HTTP(S) (REST API) and WebSocket protocols
  • Authentication, session management, and related concerns
  • Basic business logic and client-side decisions based on server responses or hardcoded rules

It would be ideal to have a single codebase for this SDK. Is it possible?

I also asked Claude, GPT and they recommend Kotlin Native for it. BTW: I have already SDK written in TypeScript.