```ts
// MyComponent.stories.ts

import type { Meta, StoryObj } from '@storybook/web-components';

const meta: Meta = {
  component: 'my-component',
};

export default meta;
type Story = StoryObj;

export const ExampleStory: Story = {
  args: {
    propertyA: import.meta.env.STORYBOOK_DATA_KEY,
    propertyB: import.meta.env.VITE_CUSTOM_VAR,
  },
};
```