[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [HeapProfiler](./puppeteer.protocol.heapprofiler.md) > [LastSeenObjectIdEvent](./puppeteer.protocol.heapprofiler.lastseenobjectidevent.md) > [timestamp](./puppeteer.protocol.heapprofiler.lastseenobjectidevent.timestamp.md) ## Protocol.HeapProfiler.LastSeenObjectIdEvent.timestamp property Signature: ```typescript timestamp: number; ```