API extractor prevents usage of re-exports 💥

In I am trying to re-export functions in #20628:

// 🚨 breaks build
export * as shorthands from './shorthands/index';

But it's impossible, see #18906. I modified code to use import/export as suggested:

// 🚨 still breaks build
import * as shorthands from "./shorthands/index";
export { shorthands };

Error is similar to #19360, but it seems that problem is different as it breaks on @fluentuiu/react-make-styles that contains re-export:

ERR! [10:48:59 AM] ■ Extracting Public API surface from 'packages\react-make-styles\lib\index.d.ts'
ERR! Analysis will use the bundled TypeScript version 4.1.5
ERR! [10:48:59 AM] x Error detected while running '_wrapFunction'
ERR! [10:48:59 AM] x ------------------------------------
ERR! [10:49:00 AM] x Error: Internal Error: The ""packages/make-styles/lib/shorthands/index"" symbol has a ts.SyntaxKind.SourceFile declaration which is not (yet?) supported by API Extractor
ERR!
ERR! You have encountered a software defect. Please consider reporting the issue to the maintainers of this
application.

Only code below passes build:

import { margin, padding } from "./shorthands/index";

export const shorthands = { margin, padding };

But it breaks tree shaking for bundlers as shorthands is an object now and any usage of shorthands.* will include all functions to bundle *.

• * if Terser is not used, but it will be used in any setup

Rollup REPL.

Reproduce the API Extractor failure from packages/react-make-styles/lib/index.d.ts, focusing on the re-export through packages/make-styles/lib/shorthands/index and the @fluentuiu/react-make-styles build. Compare the failing namespace re-exports with the working explicit-export example and the related issues #18906 and #19360. Done means the intended re-export passes API Extractor without requiring an object workaround that harms tree shaking.