# NotifyEvent

Defined in: [packages/query-core/src/types.ts:1558](https://github.com/TanStack/query/blob/main/packages/query-core/src/types.ts#L1558)

## Properties

| Property | Type |
| ------ | ------ |
| <a id="type"></a> `type` | \| `"added"` \| `"removed"` \| `"updated"` \| `"observerAdded"` \| `"observerRemoved"` \| `"observerResultsUpdated"` \| `"observerOptionsUpdated"` |