compilePackages: react-dom/server renderToStaticMarkup returns empty string

[proggeramlug]

Perry: origin/main @ a674b6e (v0.5.1167) · macOS arm64
Setup: package compiled natively via perry.compilePackages (perry.allow.compilePackages: ["*"])
Build/run: perry repro.ts -o out && ./out

(Found via an internal real-package stress run — importing the real package and exercising it.)

Bug

renderToStaticMarkup(createElement(...)) returns an empty string instead of the rendered HTML. The program exits 0 but produces no markup — SSR yields nothing.

Repro

import { createElement } from 'react';
import { renderToStaticMarkup } from 'react-dom/server';

function Item({ n }) { return createElement('li', null, `item-${n}`); }
const list = createElement('ul', { id: 'L' }, [1, 2, 3].map((n) => createElement(Item, { key: n, n })));
console.log(renderToStaticMarkup(list));

Expected (Node)

<ul id="L"><li>item-1</li><li>item-2</li><li>item-3</li></ul>

Actual (Perry)

(empty string)