Using the Rich Text editor in JSM customer portal

We are trying to add the existing rich text editor (wysiwyg) in the textarea box, on a dialog in customer portal.
But unable to find a way to initialize the existing Ak-Editor/AkEditor/ProseMirror

Example a sample of adding textbox in dialog

<textarea rows="5" class="textarea full-width-field" name="description" id="description">
${issueDescription}</textarea>

Does anybody have any info to convert this textarea in customer portal to a rich text editor

I found some examples on how to use the Jira portal editor, but I need to be able to use the Customer portal editor instead.