storybook/docs/snippets/react/component-story-highlight-addon.js.mdx

```js
// MyComponent.stories.js|jsx

import { useChannel } from '@storybook/preview-api';
import { HIGHLIGHT } from '@storybook/addon-highlight';

import { MyComponent } from './MyComponent';

export default {
  component: MyComponent,
};

export const Highlighted = {
  decorators: [
    (storyFn) => {
      const emit = useChannel({});
      emit(HIGHLIGHT, {
        elements: ['h2', 'a', '.storybook-button'],
      });
      return storyFn();
    },
  ],
};
```