# InterruptBoundaryPhase

# Type Alias: InterruptBoundaryPhase

```ts
type InterruptBoundaryPhase = typeof INTERRUPT_BOUNDARY_PHASES[number];
```

Defined in: [packages/ai/src/activities/chat/middleware/types.ts:102](https://github.com/TanStack/ai/blob/main/packages/ai/src/activities/chat/middleware/types.ts#L102)