storybook/docs/snippets/common/button-story-primary-composition.js.mdx

```js
// Button.stories.js | Button.stories.jsx | Button.stories.ts | Button.stories.tsx

const Primary = ButtonStory.bind({});
Primary.args = {
  primary: true,
  label: 'Button',
}

const Secondary = ButtonStory.bind({});
Secondary.args = {
  ...Primary.args,
  primary: false,
}
```