HashTagComponent = () => (
  <div className="rdw-storybook-root">
    <span>
      Write a hashTag like <pre>{"#rdw"}</pre>
    </span>
    <Editor
      hashtag={{ hashCharacter: "#", separator: " " }}
      toolbarClassName="rdw-storybook-toolbar"
      wrapperClassName="rdw-storybook-wrapper"
      editorClassName="rdw-storybook-editor"
    />
  </div>
)
Default hashCharacter is '#' and default separator between words is ' '.
thus there fields are optional. An empty object can also be passed as value of prop hashTag.