---
id: fast-element.subscriberset.source
title: SubscriberSet.source property
hide_title: true
---
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[@microsoft/fast-element](./fast-element.md) &gt; [SubscriberSet](./fast-element.subscriberset.md) &gt; [source](./fast-element.subscriberset.source.md)

## SubscriberSet.source property

The source that this subscriber set is reporting changes for.

<b>Signature:</b>

```typescript
readonly source: any;
```