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