import Editor from 'tinymce/core/api/Editor'; const register = (editor: Editor): void => { const onAction = () => editor.execCommand('mcePreview'); editor.ui.registry.addButton('preview', { icon: 'preview', tooltip: 'Preview', onAction }); editor.ui.registry.addMenuItem('preview', { icon: 'preview', text: 'Preview', onAction }); }; export { register };