Webpack 5.110.2 causes @mui/utils/chainPropTypes to be reported as having no default export

[FrozenSamurai]

Question

After upgrading Webpack from 5.110.1 to 5.110.2, my React application fails to build with the following error:

Attempted import error: '@mui/utils/chainPropTypes' does not contain a default export

The application was building successfully with Webpack 5.110.1.

Environment

{
  "@mui/icons-material": "^5.10.16",
  "@mui/material": "^5.10.17",
  "@mui/styles": "^5.11.2",
  "react": "^17.0.2",
  "webpack": "5.110.2"
}

The relevant MUI packages are relatively old (v5.x), and I suspect this may be related to how Webpack 5.110.2 handles ESM exports/re-exports or detects missing default exports.

For example, @mui/utils exposes chainPropTypes as a default export in its package entry point:

export { default as chainPropTypes } from './chainPropTypes';

However, with Webpack 5.110.2, the build reports that @mui/utils/chainPropTypes does not contain a default export.

What changed

The only significant change between the working and failing builds is the Webpack version:

Webpack 5.110.1  →  works
Webpack 5.110.2  →  fails

I also verified that the same application and MUI dependency versions work when Webpack is pinned back to 5.110.1.

Questions

1. Was there a change in Webpack 5.110.2 related to ESM export analysis, default exports, or re-exports that could expose this issue?
2. Is this expected behavior with the older MUI v5 packages?
3. Is there a recommended Webpack configuration or dependency upgrade that would resolve this without pinning Webpack to 5.110.1?
4. Should this instead be considered an issue in the MUI package's ESM/CJS build or package exports?

Additional information

I can provide a minimal reproduction repository if required.

At the moment, the workaround is to pin Webpack to:

{
  "webpack": "5.110.1"
}

I'd like to understand the underlying compatibility issue before relying on a Webpack version override as a long-term solution.

[hai-x]

Thanks for report. Fixed in #21874.