docs/snippets/vue/storybook-preview-with-mixin-decorator.3-mixin.js.mdx
```js
// .storybook/preview.js
import { app } from '@storybook/vue3';
//👇 Storybook Vue app being extended and registering the mixin
app.mixin({
// Your mixin code
});
export const decorators = [
(story) => ({
components: { story },
template: '<div style="margin: 3em;"><story /></div>',
}),
];
```