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@snap/camera-kit

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[**CameraKit Web SDK v1.13.0**](../README.md) *** [CameraKit Web SDK](../globals.md) / CameraKitSourceSubscriber # Interface: CameraKitSourceSubscriber When creating a [CameraKitSource](../classes/CameraKitSource.md), passing a CameraKitSourceSubscriber allows logic to implemented which will run whenever that source is attached/detached from a CameraKitSession. ## Properties ### onAttach()? > `readonly` `optional` **onAttach**: (`source`, `lensCore`, `reportError`, `frameEvents`) => `void` \| `Promise`\<`void`\> #### Parameters ##### source [`CameraKitSource`](../classes/CameraKitSource.md) ##### lensCore `LensCore` ##### reportError (`error`) => `void` ##### frameEvents `Observable`\<`FrameEvent`\> #### Returns `void` \| `Promise`\<`void`\> *** ### onDetach()? > `readonly` `optional` **onDetach**: (`reportError`) => `void` \| `Promise`\<`void`\> #### Parameters ##### reportError (`error`) => `void` #### Returns `void` \| `Promise`\<`void`\>