Webpack BuildError caused by re-exporting (@unleashit/common)

[unleashit]

Package name

@unleashit/common

Entire (stringified) error that I see in my browser console

{
  "error": {
    "code": "BuildError",
    "message": "Failed to build this package.",
    "details": {
      "name": "BuildError",
      "originalError": [
        "/tmp/tmp-build/packages/build-@unleashitcommon-Ytz/node_modules/@unleashit/common/src/index.ts 10:27\nModule parse failed: Unexpected token (10:27)\nYou may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders\n| export * from './lib/utils';\n| export * from './lib/CustomFields';\n> export { formHandler, type OnSubmitArgs } from './lib/formHandler';\n| export {\n|   FetchError,\n @ /tmp/tmp-build/packages/build-@unleashitcommon-Ytz/index.js 1:10-38"
      ]
    }
  }
}

Hi, I've seen a bunch of closed build related issues relating to ES2020+ use but I wasn't sure if re-exporting (maybe export * from X in particular) from a barrel file was still a known issue. The build works fine on my end in either tsup or Webpack 5, but not with BP. In any case, Happy Holidays!

Here's a link to the package in question in case it's helpful: https://github.com/unleashit/npm-library/tree/master/shared/common.