| args | <code>optional</code> | string\[\] | Additional command line arguments to pass to the browser instance. | |
| debuggingPort | <code>optional</code> | number | Specify the debugging port number to use | |
| devtools | <code>optional</code> | boolean | Whether to auto-open a DevTools panel for each tab. If this is set to <code>true</code>, then <code>headless</code> will be forced to <code>false</code>. | <code>false</code> |
| headless | <code>optional</code> | boolean \| 'shell' | Whether to run the browser in headless mode. | <code>true</code> |
| userDataDir | <code>optional</code> | string | Path to a user data directory. [see the Chromium docs](https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/user_data_dir.md) for more info. | |