TypeScript typings seem off when wrapping an object graph

[jderemer]

The web worker that I'm wrapping looks like:

worker.js

interface MyWebWorker {
   service: {
      method: () => void;
   };
}

Comlink.expose({
   service: {
      method: () => {}
   }
})

main.js

const worker = new Worker("worker.js");
  
const obj = Comlink.wrap<MyWebWorker>(worker);

After wrapping in main.js, I get the following typings:

• obj: Remote<MyWebWorker>
• obj.service: Promise<{ method: () => void }>

What I would like/expect is the following typings:

• obj: Remote<MyWebWorker>
• obj.service: { method: () => void }
• obj.service.method: () => Promise<void>

At runtime, I can run obj.service.method() and it will successfully make the call to the web worker.

But at compile time, Typescript says Property 'method' does not exist on type 'Promise<{ method: () => void }>'.

My desired typings feel possible based on how it works at runtime, but the typing of Remote<T> seems to just wrap everything in the object graph with promises.