[Bug]: Duplicate default export on import + require usage #6571
Description
Reproduction link or steps
Have some input code like this :
// Require
const required = require('./file.json')
// Dynamic Import
const dynamicRes = await import('./file.json')Reproduction : https://github.com/Gugustinette/rolldown-import-require-repro
What is expected?
This is what one of the input file should look I guess :
import { require_file } from "./file-DuStti8x.js";
export default require_file();What is actually happening?
This is how it looks right now :
import { require_file } from "./file-DuStti8x.js";
export default require_file();
export { file_default as default };There are 2 default exports, which causes an error whenever running/importing associated modules.
System Info
System:
OS: macOS 14.5
CPU: (8) arm64 Apple M1 Pro
Memory: 111.30 MB / 16.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.2.0 - /opt/homebrew/bin/node
Yarn: 1.22.17 - /usr/local/bin/yarn
npm: 11.5.2 - /opt/homebrew/bin/npm
pnpm: 10.8.1 - /opt/homebrew/bin/pnpm
bun: 1.2.19 - /Users/augustinmercier/.bun/bin/bun
Deno: 2.3.3 - /Users/augustinmercier/.deno/bin/deno
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 141.0.7390.66
Firefox: 121.0
Safari: 17.5
npmPackages:
rolldown: ^1.0.0-beta.43 => 1.0.0-beta.43Any additional comments?
No response