@tsimpl/core

The type-level foundation for tsimpl.

@tsimpl/core is zero-runtime: just the types you use to describe traits and their implementations. Bring your own runtime (or pair it with @tsimpl/runtime).

Why use it

• Define traits as plain TypeScript types.
• Keep implementations type-safe without extra helpers.
• No runtime cost.

Quick example

import { Impl, Self } from "@tsimpl/core";

type Display = {
  display(self: Self): string;
};

type User = { id: string; handle: string };

const displayImpl: Impl<Display, User> = {
  display(self) {
    return `@${self.handle} (${self.id})`;
  }
};

Pair this with @tsimpl/runtime to register and dispatch implementations at runtime.