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invisible_playwright/CHANGELOG.md
feder-cr 589c848e07 fix: every mouse action failed on FF150 — jugglerSendMouseEvent was never landed (#9) 
The Juggler JS in upstream Playwright calls win.windowUtils.jugglerSendMouseEvent
at four sites, but when the Juggler was ported FF146 -> FF150 the matching C++
patch to nsIDOMWindowUtils.idl + nsDOMWindowUtils.cpp was dropped. Result: every
page.mouse.*, page.click(selector), locator.click(), page.hover(), mouse.wheel()
threw "win.windowUtils.jugglerSendMouseEvent is not a function" on first call.

The fix is shipped in the patched Firefox source (feder-cr/firefox-stealth):
six call sites in juggler/protocol/PageHandler.js and juggler/content/PageAgent.js
were swapped to win.synthesizeMouseEvent — a Mozilla chrome-scope helper that is
already present in FF150. scrollRectIntoViewIfNeeded was also guarded at the two
PageHandler.js sites where it was called unconditionally on the FF150
_linkedBrowser, which no longer exposes that method.

This invisible_playwright release adds the regression suite in tests/test_mouse.py
(12 cases inspired by microsoft/playwright-python/tests/async/test_click.py),
the CHANGELOG, and the version bump. The patched Firefox archive on GitHub
Releases must be refreshed before users actually receive the fix; the
BINARY_VERSION bump to firefox-2 will land with that asset.

Reporter: @trob9 (issue #9) — provided ready-to-apply JS patches, 4-line minimal
repro, and confirmed reCAPTCHA v3 = 0.90 holds after the swap.
2026-05-18 14:45:01 -07:00

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.1.1 - 2026-05-18

Fixed

  • Critical: every page.mouse.*, page.click(selector), locator.click(), page.hover(), mouse.wheel() failed on the patched Firefox 150 binary with win.windowUtils.jugglerSendMouseEvent is not a function. The Juggler JS was porting calls to a Playwright-specific C++ method that was never landed in the FF146→FF150 port; replaced with the Mozilla chrome-scope win.synthesizeMouseEvent helper which is present in FF150. Six call sites patched across juggler/protocol/PageHandler.js and juggler/content/PageAgent.js. Reporter: @trob9 — #9.
  • _linkedBrowser.scrollRectIntoViewIfNeeded() is now guarded at both call sites in PageHandler.js (dispatchMouseEvent and dispatchWheelEvent) — the method is not present on the shipped FF150 <browser> element, so the unguarded call threw before the mouse event was dispatched.

Added

  • tests/test_mouse.py: 12-case regression suite covering every patched code path (mouse.move/click/dblclick/right-click, modifiers, locator.click/hover, wheel, manual mousedown+up, off-viewport move, humanize intermediate moves, scroll-and-click on offscreen element). Test cases inspired by microsoft/playwright-python/tests/async/test_click.py.
  • Community standards: CODE_OF_CONDUCT.md, CONTRIBUTING.md, SECURITY.md, .github/ISSUE_TEMPLATE/*, .github/PULL_REQUEST_TEMPLATE.md.

Notes

  • The Stealthfox humanize Bezier expansion continues to fire intermediate mousemove events; the swap to synthesizeMouseEvent does not change the human-trajectory behavior (verified by test).
  • The reCAPTCHA v3 score (0.90) and FingerprintPro / CreepJS results documented in the README are unaffected — synthesizeMouseEvent is a legitimate Mozilla helper that does not increase the anti-detect surface.
  • A binary refresh of the patched Firefox archive on GitHub Releases is required for users to receive this fix (the Juggler JS is shipped inside the archive). The BINARY_VERSION will be bumped to firefox-2 in that release.

0.1.0 - 2026-05-13

Added

  • Initial public release.
  • InvisiblePlaywright sync and async context managers — drop-in replacement for playwright.sync_api.Browser / async_api.Browser.
  • StealthFox humanize hook: Bezier-curve mouse trajectories enabled by default.
  • _fpforge Bayesian fingerprint sampler with ~400 fields per session.
  • CLI: invisible-playwright fetch | path | version | clear-cache.
  • Pinnable fingerprint fields via pin={...} (see docs/pinning.md).
  • SOCKS5 / SOCKS4 / HTTP / HTTPS proxy support with auth.
  • Linux x86_64 and Windows x86_64 binary support.