[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [ServiceWorker](./puppeteer.protocol.serviceworker.md) > [ServiceWorkerVersion](./puppeteer.protocol.serviceworker.serviceworkerversion.md) > [versionId](./puppeteer.protocol.serviceworker.serviceworkerversion.versionid.md) ## Protocol.ServiceWorker.ServiceWorkerVersion.versionId property Signature: ```typescript versionId: string; ```