How to add a third party plugin to CKEditor5?

[Ahmed1995mansour]

I used the new CKEditor5 builder online (https://ckeditor.com/ckeditor-5/builder/) to integrate CKEditor into my React Project and everything is working fine

Now I try to to add a plugin to CKEditor but whatever I do it gives me this error : ckeditor duplicated-modules

[Reinmar]

It depends on whether you used CDN or npm option. There may be different reasons for duplicated-modules in both scenarios.

The most common reason for duplicated-modules in case of npm installation is a mismatch between versions of dependencies. Situation in which CKEditor 5 is installed in a different version than what the 3rd party or custom addon requires.

So, two questions:

• Do you use npm or CDN?
• What kind of additional plugin do you try to add?

[Ahmed1995mansour]

Thanks for your response

In answer to your question

1- I use NPM
2- Here's the plugin I want to integrate with my CKEditor in React App: https://www.npmjs.com/package/@dxpr/ckeditor5-ai-agent

[cbrandtbuffalo]

I'm not sure if it's the same issue, but we just ran into something similar with running a build and getting the ckeditor duplicated-modules error. We also saw the size of our build increase. In our case, our package.json had a line like:

"@ckeditor/ckeditor5-editor-classic": "^44.1.0",

When we ran the build today, that pulled in version 44.2.0 for just two modules. That seemed to cause the duplicate. We removed the "^", setting everything to 44.1.0, and the build ran correctly for us again.