Plugin template: Scripts bundled with `extraScripts` cause "ReferenceError: exports is not defined" in some situations

[personalizedrefrigerator]

Operating system

Linux

Joplin version

3.1.15

Desktop version info

Joplin 3.1.15 (prod, linux)

Client ID: c13c7d68206342d0be14de538812a561 Sync Version: 3 Profile Version: 47 Keychain Supported: Yes

Revision: e5771a3

Backup: 1.4.2 Extra Markdown viewer settings: 0.4.0

Current behaviour

To reproduce:

1. Add a plugin that either:
   • Creates a dialog/panel script built with extraScripts.
   • Adds a Markdown viewer asset built with extraScripts.
2. If the plugin includes a WebView script, open the WebView. If it adds a Markdown viewer asset, open the Markdown viewer.
3. Check Joplin's development tools.

Expected behaviour

No error should be logged to the console.

Past attempts at fixing this

https://github.com/laurent22/joplin/commit/c197a83de8ad6081872e8f42484a6acbc62febd5:

• Defines exports
• Reverted here — it broke the Function Plot plugin, which uses a library that behaves differently when exports is defined.

Setting target: 'web' and changing libraryTarget to var or global in webpack.config.js:

• Just setting target: 'web' is insufficient.
• This breaks renderer/editor content scripts, which define an exports variable and expect it to be modified.

Logs

viewer.js:720 Uncaught ReferenceError: exports is not defined
    at viewer.js:720:11
    at viewer.js:722:12

[laurent22]

Just setting target: 'web' is insufficient.

Would that fix at least certain plugins (without breaking new plugins)? I've set that up for a plugin and it did help getting rid of the error without any negative effect as far as I can see