title: error: Could not find a declaration file for module '@ckeditor/ckeditor5-build-classic' angular 9
body: <p>I want to use ckeditor in angular 9, I followed instructions in <a href="https://ckeditor.com/docs/ckeditor5/latest/builds/guides/integration/frameworks/angular.html" rel="noreferrer">https://ckeditor.com/docs/ckeditor5/latest/builds/guides/integration/frameworks/angular.html</a>
  but it shows an error where I import '@ckeditor/ckeditor5-build-classic':</p>
  <pre><code>Could not find a declaration file for module '@ckeditor/ckeditor5-build-classic'. 
  
  'a:/repositories/BasimStore/source/Web/Frontend/node_modules/@ckeditor/ckeditor5-build-classic/build/ckeditor.js' implicitly has an 'any' type.
    Try `npm install @types/ckeditor__ckeditor5-build-classic` if it exists or add a new declaration (.d.ts) file containing `declare module '@ckeditor/ckeditor5-build-classic';`
  </code></pre>
  <p><a href="https://i.stack.imgur.com/guYGw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/guYGw.png" alt="enter image description here" /></a></p>
  <p>I have both &quot;@ckeditor/ckeditor5-angular&quot;: &quot;^1.2.3&quot; and &quot;@ckeditor/ckeditor5-build-classic&quot;: &quot;^20.0.0&quot; in package.json but still it shows the error.
  I could't find index.d.ts in ckeditor5-build-classic folder. How should I fix this error?</p>