WebPack audio worklet chunk causes browser error (NextJS)

[Danielku15]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When bundling alphaTab with WebPack, and starting the playback, a browser error occurs:

:3001/_next/static/chunks/_app-pages-browser_node_modules_coderline_alphatab_dist_alphaTab_worklet_mjs.js:726 Uncaught ReferenceError: _N_E is not defined

Expected Behavior

No errors should occur in the alphaTab outputs using the WebPack plugin.

Steps To Reproduce

1. https://github.com/CoderLine/alphaTabSamplesWeb/tree/main/src/webpack-nextjs-15
2. npm install && npm run dev
3. Hit play

Link to jsFiddle, CodePen, Project

No response

Version and Environment

[AlphaTab][VersionInfo] alphaTab 1.6.2
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] commit: 7a3395e57a19e6e78397974ab295db87b6cc7bff
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] build date: 2025-08-23T16:08:14.997Z
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] High DPI: 3
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] Platform: Browser
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] WebPack: true
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] Vite: false
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] Window Size: 1286x640
alphaTab.core.mjs:2518 [AlphaTab][VersionInfo] Screen Size: 1366x768

Platform

Web

Anything else?

The problem is:

1. Audio worklets run in strict mode
2. WebPack generates code which assigns the exports of this entry chunk to a global variable due to some global library settings which might be active. https://github.com/webpack/webpack/blob/main/lib/library/AssignLibraryPlugin.js#L14

We need to ensure that these Worker/Worklet output chunks do not cause such an assignment by setting the entryOptions accordingly.