puppeteer/new-docs/puppeteer.protocol.tracing.streamformat.md
2020-07-13 14:01:35 +01:00

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [Tracing](./puppeteer.protocol.tracing.md) &gt; [StreamFormat](./puppeteer.protocol.tracing.streamformat.md)
## Protocol.Tracing.StreamFormat type
Data format of a trace. Can be either the legacy JSON format or the protocol buffer format. Note that the JSON format will be deprecated soon.
<b>Signature:</b>
```typescript
export type StreamFormat = ('json' | 'proto');
```