[TS] EditorConfig misses licenseKey ('licenseKey' does not exist in type 'EditorConfig')

[mmichaelis]

📝 Provide detailed reproduction steps (if any)

1. Follow the setup of ClassicEditor as, for example, given in Overview - CKEditor 5 Documentation.

✔️ Expected result

Given the licenseKey as option, it compiles successfully.

❌ Actual result

It fails to compile as licenseKey is not part of EditorConfig.

More Notes

Possibly related to:

• editorconfig.jsdoc doesn't talk about licenseKey, sidebar, presenceList #7603

Also note, that this is a migration issue, when coming from typings at DefinitelyTyped, where EditorConfig had a licenseKey:

• https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/ckeditor__ckeditor5-core/src/editor/editorconfig.d.ts#L61

(I think in previous versions, it even got marked as "required" property, why we still have it in our code.)

Workaround for us

We don't need the licenseKey (yet) and may safely skip it.

📃 Other details

• Browser: Chrome
• OS: Windows
• First affected CKEditor version: 37.0.1
• Installed CKEditor plugins: irrelevant (we don't have any plugins by default, that require a license)

---

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[Witoso]

Thanks for the report and catching that. Some of our premium plugins are augmenting this config but for backward compatibility, we will add it to the main EditorConfig.

[Witoso]

While we work on a fix and release, the workaround is to either:

• Remove licenseKey if you don't need it.
• Add module augmentation:

  declare module "@ckeditor/ckeditor5-core" {
    interface EditorConfig {
      licenseKey?: string;
    }
  }