The error occurred as a result of this sequence:

1. Go to https://ckeditor.com/docs/ckeditor5/latest/installation/getting-started/frameworks/angular.html.
2. Try to execute the CKEditor in your Angular program and get error like in this github issue.
3. Try to make some temporary solution: remove the null check for the CKEditor_Version field and make the type string.
4. Type the command ng serve and see it in the browser (Chrome).
5. Click on the right side of the mouse and follow the inspect to open dev tools.
6. Go to the "Console" tab menu and see the error such as:

❌ Actual result

It's impossible to utilize <ckeditor [editor]?="Editor"></ckeditor> tag in HTML file.

• Installed CKEditor plugins: FROM '@ckeditor/ckeditor5-build-classic'

CodePudding user response：

I think you have incorrectly imported the ClassicEditor Please modify the below line!

Before:

import * as ClassicEditor from '@ckeditor/ckeditor5-build-classic';

After:

import ClassicEditor from '@ckeditor/ckeditor5-build-classic';

.ts

import { Component, VERSION } from '@angular/core';
import ClassicEditor from '@ckeditor/ckeditor5-build-classic';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css'],
})
export class AppComponent {
  Editor = ClassicEditor;
  title = 'CKEditorAngularApp';
  name = 'Angular '   VERSION.major;
}

stackblitz example

stackblitz example 2