puppeteer/website/versioned_docs/version-19.7.5/api/puppeteer.target.worker.md
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---
sidebar_label: Target.worker
---
# Target.worker() method
If the target is not of type `"service_worker"` or `"shared_worker"`, returns `null`.
#### Signature:
```typescript
class Target {
worker(): Promise<WebWorker | null>;
}
```
**Returns:**
Promise&lt;[WebWorker](./puppeteer.webworker.md) \| null&gt;