[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Tracing](./puppeteer.protocol.tracing.md) > [TracingCompleteEvent](./puppeteer.protocol.tracing.tracingcompleteevent.md) ## Protocol.Tracing.TracingCompleteEvent interface Signals that tracing is stopped and there is no trace buffers pending flush, all data were delivered via dataCollected events. Signature: ```typescript export interface TracingCompleteEvent ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [dataLossOccurred](./puppeteer.protocol.tracing.tracingcompleteevent.datalossoccurred.md) | boolean | Indicates whether some trace data is known to have been lost, e.g. because the trace ring buffer wrapped around. | | [stream](./puppeteer.protocol.tracing.tracingcompleteevent.stream.md) | [IO.StreamHandle](./puppeteer.protocol.io.streamhandle.md) | A handle of the stream that holds resulting trace data. | | [streamCompression](./puppeteer.protocol.tracing.tracingcompleteevent.streamcompression.md) | [StreamCompression](./puppeteer.protocol.tracing.streamcompression.md) | Compression format of returned stream. | | [traceFormat](./puppeteer.protocol.tracing.tracingcompleteevent.traceformat.md) | [StreamFormat](./puppeteer.protocol.tracing.streamformat.md) | Trace data format of returned stream. |