A web browser with dynamic data-flow tracking enabled in the Javascript engine and DOM, based on Mozilla Firefox (https://github.com/mozilla/gecko-dev). It can be used to identify insecure data flows or data privacy leaks in client-side web applications.
Update to Playwright v1.41:
https://github.com/microsoft/playwright/releases/tag/v1.41.0
This corresponds to Firefox upstream commit 7ab3cc0103090dd7bfa02e072a529b9fc784ab4e