Source mappings are missing for serialized properties

🔎 Search Terms

source map declaration map properties symbols navigation definition goto

🕗 Version & Regression Information

• This is the behavior in every version I tried

⏯ Playground Link

N/A

💻 Code

// api.ts
type ValidateShape<T> = {
  [K in keyof T]: T[K];
};

function test<T>(arg: ValidateShape<T>) {
  function createCaller<T>(arg: T): () => {
    [K in keyof T]: () => T[K];
  } {
    return null as any;
  }
  return {
    createCaller: createCaller(arg),
  };
}

const api = test({
  foo/*target*/: 1,
  bar: "",
});

export const createCaller = api.createCaller;

// main.ts

import { createCaller } from "./api";
const caller = createCaller();
caller.foo/*source*/;

🙁 Actual behavior

Please consider the 2 files above as 2 separate projects.

When those files are in the same project we can successfully go from the source marker to the target marker with "go to definition" and others like it. The same works with project references on.

However, when api.ts gets compiled with declaration maps and consumed through that then this navigation no longer works correctly.

🙂 Expected behavior

I'd expect this navigation to continue to work

Additional information about the issue

No response

api.ts と main.ts を使って 2 プロジェクトのケースを再現することから始め、api.ts を declaration maps 付きでコンパイルし、main.ts から利用します。caller.foo から foo プロパティまでの source-map と go-to-definition の動作を追跡し、生成された宣言を通じてナビゲーションが target marker に到達したら issue は完了とみなします。