TS2411: Property '[FONT_SIZE]' of type 'FontSizeCommand' is not assignable to 'string' index type 'Command'

[sergey-morenets]

Hi

We have Angular project with Ckeditor 5 dependency. Everything was working fine if we used the following versions:

    "@ckeditor/ckeditor5-angular": "^7.0.1",
    "@ckeditor/ckeditor5-core": "^40.2.0"

Once we upgraded "@ckeditor/ckeditor5-core" (and related Ckeditor dependencies) to 41.0.0 we got multiple errors during build, for example:

X [ERROR] TS2411: Property '[FONT_SIZE]' of type 'FontSizeCommand' is not assignable to 'string' index type 'Command'. [plugin angular-compiler]

    node_modules/@ckeditor/ckeditor5-font/src/augmentation.d.ts:53:8:
      53 │         [FONT_SIZE]: FontSizeCommand;

Angular: 17.1.0.

[Witoso]

Hi! Could you provide more details about your setup? I checked quickly that the online builder folder next to the Angular's src still works with the version v41. Two things happened in v41, we resolved an issue with ESM in our packages, and bumped TS to 5.0.0.

[sergey-morenets]

Hi! Could you provide more details about your setup? I checked quickly that the online builder folder next to the Angular's src still works with the version v41. Two things happened in v41, we resolved an issue with ESM in our packages, and bumped TS to 5.0.0.

Hi @Witoso

Which information do you need? We use custom CkEditor build and the following dependencies now:

    "@ckeditor/ckeditor5-angular": "^7.0.1",
    "@ckeditor/ckeditor5-core": "^40.2.0",
    "@ckeditor/ckeditor5-engine": "^40.2.0",
    "@ckeditor/ckeditor5-utils": "^40.2.0",
    "@ckeditor/ckeditor5-watchdog": "^40.2.0",
    "ckeditor5-custom-build": "file:ckeditor",

[Witoso]

Once we upgraded "@ckeditor/ckeditor5-core" (and related Ckeditor dependencies) to 41.0.0 we got multiple errors during build, for example:

What do you mean by build here? Is it a build command run in the ckeditor folder?

[sergey-morenets]

No, it's our application build: ng build.

[Witoso]

I don't see the @ckeditor/ckeditor5-font on the list of the deps you listed, how did it get there?

[sergey-morenets]

Not sure. I'm not an expert in CKEditor

[Witoso]

I cannot reproduce this error. Tried on StackBlitz, and everything works.

Unfortunately, without understanding of how your project is set up, it will be difficult to debug this.

[KevinMarques]

Same issue here, not only with FontSizeCommand but also with many other Commands:

...
node_modules/@ckeditor/ckeditor5-table/src/augmentation.d.ts
Property 'tableWidth' of type 'TableWidthCommand' is not assignable to 'string' index type 'Command'.
...

I think the problem is not specific to CKEditor v41.0.0 but to Angular 17.1

[Witoso]

We cannot reproduce with v16 and v17, could you provide some minimal samples?

[benzara-tahar]

I had similar issue after updating to angular 17.1.3, adding "skipLibCheck": true, to tsconfig.json fixed it for me.