Custome CKEditor5 math plugin not appearing in build application

[Meinzzzz]

Hello,
I’m trying to integrating MathLive (v0.108.2) into the CKEditor5 math plugin.
After building the app (Electron), MathLive is not visible in the math dialog, even though it works in dev (pnpm server:start).
import 'mathlive' is included, and build artifacts contain MathLive’s code.

What I changed:

• Created MathLiveInputView wrapper for web component
• Created RawLatexInputView for raw LaTeX textarea (both inputs visible and synced)
• Updated mainformview.ts to use both inputs with bidirectional sync
• Added import 'mathlive' in mathui.ts
• Added mathlive: 0.108.2 to dependencies

Tried to build it with:
pnpm run --filter desktop electron-forge:package --arch=x64 --platform=linux
The build works, but still uses the default window.

Questions
Is there something wrong or missing in my build process, or is there an obvious step needed to make the custome CKEditor5 plugin load correctly in the packaged Electron app?

My fork with all the changes:
https://github.com/Meinzzzz/Trilium-Mathlive.git
Thanks!

[dosubot[bot]]

Hi @Meinzzzz! I'm Dosu and I’m helping the Trilium team.

The most likely reason your custom MathLive CKEditor5 plugin works in dev but not in the packaged Electron app is that it isn't fully registered in the CKEditor build used by Trilium. For a custom plugin to appear in production, it must be imported and added to the correct plugin array (like EXTERNAL_PLUGINS or COMMON_PLUGINS) in packages/ckeditor5/src/plugins.ts, and also imported in index.ts so it's bundled for both dev and production builds. If you only import MathLive in a module (like mathui.ts), it may work in dev due to module hot-reloading, but won't be included in the production bundle unless it's registered in these arrays and entry points. Without this, the build will fall back to the default math dialog and not load your custom UI, even if MathLive's code is present in the artifacts. You can see how this registration works for other plugins in the Trilium codebase here.

Also, check that your Electron build isn't missing any static assets or initialization code for web components like <math-field>, as Electron's packaged environment can differ from dev in how it loads and registers web components. If you still have issues, open the Electron app's developer console and look for errors or missing resource warnings when opening the math dialog—these can help pinpoint what isn't loading or initializing as expected.

To reply, just mention @dosu.

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