[Home](./index.md) > [puppeteer](./puppeteer.md) > [Target](./puppeteer.target.md) > [worker](./puppeteer.target.worker.md) ## Target.worker() method If the target is not of type `"service_worker"` or `"shared_worker"`, returns `null`. Signature: ```typescript worker(): Promise; ``` Returns: Promise<[WebWorker](./puppeteer.webworker.md) \| null>