website/versioned_docs/version-24.40.0/api/puppeteer.tracing.md
The Tracing class exposes the tracing audit interface.
export declare class Tracing
You can use tracing.start and tracing.stop to create a trace file which can be opened in Chrome DevTools or timeline viewer.
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the Tracing class.
await page.tracing.start({path: 'trace.json'});
await page.goto('https://www.google.com');
await page.tracing.stop();
Method
</th><th>Modifiers
</th><th>Description
</th></tr></thead> <tbody><tr><td><span id="start">start(options)</span>
</td><td> </td><td>Starts a trace for the current page.
Remarks:
Only one trace can be active at a time per browser.
</td></tr> <tr><td><span id="stop">stop()</span>
</td><td> </td><td>Stops a trace started with the start method.