Note: This is an alpha release. Please file new issues for any bugs you find in it.

This release is published to npm under the alpha tag and can be installed via npm install electron@alpha, or npm install electron@35.0.0-alpha.1.

Release Notes for v35.0.0-alpha.1

Features

• Added APIs to manage shared dictionaries for compression efficiency using Brotli or ZStandard. The new APIs are session.getSharedDictionaryUsageInfo(), session.getSharedDictionaryInfo(options), session.clearSharedDictionaryCache(), and session.clearSharedDictionaryCacheForIsolationKey(options). #44750 (Also in 33, 34)
• Added WebFrameMain.collectJavaScriptCallStack() for accessing the JavaScript call stack of unresponsive renderers. #44204 (Also in 33, 34)
• Added frame to 'console-message' event.
  • Moved 'console-message' arguments into event object. #43617
• Added query-session-end event and improved session-end events on Windows. #44598
• Added optional animation parameter to BrowserWindow.setVibrancy. #35987

Fixes

• Fixed chrome.i18n extension API being unavailable in service workers. #45031 (Also in 31, 32, 33, 34)
• Fixed trace-startup not working on macOS. #44257 (Also in 32, 33, 34)
• Fixed a crash that could occur when calling shell.readShortcutLink on Windows. #44784 (Also in 33, 34)
• Fixed an issue where EventSource was undefined in both renderer and worker processes when Node.js integration was enabled. #44475 (Also in 32, 33, 34)
• Fixed an issue where WebContentsViews were being improperly removed. #44656 (Also in 31, 32, 33, 34)
• Fixed an issue where resize wasn't being emitted for single-pixel resizes on Windows. #44700 (Also in 32, 33, 34)
• Fixed an issue where a utilityProcess pid would not be undefined after exit. #44677 (Also in 32, 33, 34)
• Fixed an issue where buttons shown under the Window Controls Overlay API were missing tooltips. #44721 (Also in 32, 33, 34)
• Fixed an issue where closing a window after printing on Linux triggered a crash. #44246 (Also in 31, 32, 33, 34)
• Fixed an issue where the exit event could be emitted twice from the utilityProcess. #44243 (Also in 31, 32, 33, 34)
• Fixed an issue where the webContents context-menu event was not emitted when using -webkit-app-region: drag. #44761 (Also in 32, 33, 34)
• Fixed an issue where the windows control overlay was unexpectedly visible in fullscreen on Linux. #44621 (Also in 31, 32, 33, 34)
• Fixed an possible crash when using draggable regions and BaseWindows to get the context-menu event. #44940 (Also in 32, 33, 34)
• Fixed build failure when the PDF viewer is disabled. #44960 (Also in 33, 34)
• Fixed calling setAlwaysOnTop on a hidden window which is then shown with showInactive on Linux under X11. #44078 (Also in 31, 32, 33, 34)
• Fixed crash in net api when utility process exits. #44574 (Also in 32, 33, 34)
• Fixed crash when network process terminates while a net log is running. #44406 (Also in 31, 32, 33, 34)
• Fixed crash when rendering super menu accelerator on linux. #44341 (Also in 32, 33, 34)
• Fixed custom spell checker getting stuck in infinite loop using 100% CPU. #45001 (Also in 31, 32, 33, 34)
• Fixed desktopCapturer.getSources not returning electron windows on Windows. #45000
• Fixed external window focus when using shell.openExternal. #44408 (Also in 33, 34)
• Fixed file chooser dialogs for flaptak applications. #44426 (Also in 32, 34)
• Fixed issue where 'contextmenu' event is emitted twice on macOS. #44978 (Also in 34)
• Fixed issue with missing index arg for webContents.canGoToOffset. #44989 (Also in 32, 33, 34)
• Fixed race condition in which WebContents appears as white screen on VDI machines without hardware acceleration capabilities. #44318 (Also in 32, 33, 34)
• Fixed regression with dynamic dependency on libgdk_pixbuf. #44423 (Also in 32, 33, 34)
• Fixed segfault when moving WebContentsView between BrowserWindows. #44599 (Also in 31, 32, 33, 34)
• Fixed theme does not work in DevTools. #44114 (Also in 32, 33, 34)
• Fixed update file extension bug. #44296 (Also in 33, 34)
• Return 0 exit code for normal termination of the utility process. #44726 (Also in 32, 33, 34)
• The avoidClosingConnections option for session.clearData now properly defaults to false when the dataTypes option is not set. #45187

Other Changes

• Fixed all -Wunsafe-buffer-usage Clang warnings and enabled the compiler warning in new builds. #44056
• Fixed an issue where a deprecation warning was being incorrectly emitted for frameless windows on macOS. #44728 (Also in 33, 34)
• Performance improvements when processing microtasks. #44439 (Also in 32, 33, 34)
• Reverts a Node bump to v22.9.0, downgrades back to v20.18.0. #44596
• Updated Chromium to 133.0.6920.0. #45055
• Upgrades Node to v22.9.0. #44597
• Upgrades Node.js to v22.9.0. #44281

Documentation

• Documentation changes: #44391, #44851, #45173