```jsx
/**
 * title: 有标题
 * description: 有简介，且有背景色 + 紧凑模式
 * compact: true
 * background: '#f7f9fb'
 */
export default () => 'Hello Foo!';
```

```jsx
/**
 * title: 只有标题
 */
export default () => 'Hello Foo12313121!';
```

```jsx
/**
 * title: 调试 demo
 * debug: true
 */
export default () => 'Hello Foo12313121!';
```

```jsx
export default () => 'Hello Foo12313121!';
```
