# TreemapDrillChangeEventDetail

The TreemapDrillChangeEventDetail type declaration and related types. Optional fields are marked with ?.

Canonical: https://chart.syidax.com/docs/types/TreemapDrillChangeEventDetail/

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## Type declaration

```typescript
export interface TreemapDrillChangeEventDetail { rootId: string | null; previousRootId: string | null; by: TreemapSelectionSource }
```

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## Related types

- [TreemapSelectionSource](https://chart.syidax.com/docs/types/TreemapSelectionSource.md)