[Bug]: declare statements are not preserved which breaks API extending for 3rd-party modules

[JounQin]

Version

  System:
    OS: Linux 6.1 Debian GNU/Linux 11 (bullseye) 11 (bullseye)
    CPU: (2) x64 AMD EPYC
    Memory: 2.74 GB / 4.14 GB
    Container: Yes
    Shell: Unknown
  npmPackages:
    @rslib/core: ^0.5.1 => 0.5.1

Details

Input:

declare global {
  const x: string;
}

declare module "unist" {
  interface Data {
    key: string;
  }
}

export * from "./test";

Output:

export declare const y: string;

export { }

Reproduce link

https://codesandbox.io/p/devbox/thirsty-leftpad-h3fczd

Reproduce Steps

npm run build

[Timeless0911]

No permission for this codesandbox.

[JounQin]

No permission for this codesandbox.

Sorry, can you check now?

[Timeless0911]

Should be an issue of @microsoft/api-extractor, see microsoft/rushstack#2090 and microsoft/rushstack#3000