storybook/docs/snippets/svelte/my-component-with-env-variables.js.mdx

```js
// MyComponent.stories.js

import MyComponent from './MyComponent.svelte';

export default {
  component: MyComponent,
};

const Template = {
  args: {
    propertyA: process.env.STORYBOOK_DATA_KEY,
  },
  render: (args) => ({
    Component: MyComponent,
    props: args,
  }),
};
```