ReferenceError on client render in production build using SWC minifier

[georgwittberger-telekom-mms]

Link to the code that reproduces this issue

https://github.com/georgwittberger-telekom-mms/nextjs-lyne-swc-error-repro

To Reproduce

1. Build project using npm run build.
2. Start test server using npm run start.
3. Open page on http://localhost:3000
4. View browser console output.

Current vs. Expected behavior

Current behavior:

During client render a ReferenceError is thrown as soon the code attempts to use a certain module export. This is caused by the minified Webpack module exports referencing an identifier which does not exist (see additional context).

Expected behavior:

No error. Minified JavaScript identifiers pointing to the correct values.

Provide environment information

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 10 Enterprise
  Available memory (MB): 32434  
  Available CPU cores: 16       
Binaries:
  Node: 20.10.0
  npm: N/A
  Yarn: N/A
  pnpm: N/A
Relevant Packages:
  next: 14.2.3
  eslint-config-next: 14.2.3    
  react: 18.3.1
  react-dom: 18.3.1
  typescript: 5.4.5
Next.js Config:
  output: export

Which area(s) are affected? (Select all that apply)

Module Resolution, SWC

Which stage(s) are affected? (Select all that apply)

next build (local)

Additional context

The following error appears in the browser console:

ReferenceError: e is not defined
    at Object.jU (848-7d911d46e30bd3f0.js:16:18331)
    at new k (848-7d911d46e30bd3f0.js:16:7592)
    at 9705 (848-7d911d46e30bd3f0.js:16:7777)
    at d (webpack-4b7c5c3f98de81bb.js:1:151)
    at 9393 (page-e76bcc040321554e.js:1:223)
    at Function.d (webpack-4b7c5c3f98de81bb.js:1:151)

The identifier e which is missing here is the exported isBrowser function of the module node_modules/@sbb-esta/lyne-components/development/core/dom.js.

// Minified code of "node_modules/@sbb-esta/lyne-components/development/core/dom.js"
3712: function(t, o, r) {
        r.d(o, {
            $Q: function() {
                return l
            },
            Ev: function() {
                return i
            },
            e_: function() {
                return s
            },
            jU: function() {
                return e    // <-- ReferenceError: e is not defined
            }
        });
        try {
            "u" > typeof Intl && Intl.v8BreakIterator
        } catch (t) {}
        // This variable "n" (the "isBrowser" function) is what should be returned by "jU" function above
        let n = ()=>"object" == typeof document && !!document
          , s = ()=>n() && document.documentElement.getAttribute("dir") || "ltr";
        function i(t, o, r) {
            r ? t.setAttribute(o, r) : t.removeAttribute(o)
        }

[github-actions]

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