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@huntie huntie commented Feb 3, 2026

Summary:
Changelog:
[General][Changed] - React Native DevTools: Enable native macOS window merging

Reviewed By: motiz88

Differential Revision: D92154327

Summary:

Upgrade from Electron 37.x → 39.x , which includes compiling for macOS 26.

Changelog: [Internal]

**Breaking changes from Electron 37.2.6 → 39.0.0:**

**Electron 38.0.0**
- Removed `ELECTRON_OZONE_PLATFORM_HINT` env var
- Removed `ORIGINAL_XDG_CURRENT_DESKTOP` env var  
- Removed macOS 11 support (minimum now macOS 12)
- Removed `plugin-crashed` event from webContents
- Deprecated `webFrame.routingId` (use `frameToken`)
- Deprecated `webFrame.findFrameByRoutingId()` (use `findFrameByToken()`)
- Linux now defaults to Wayland (force X11 with `--ozone-platform=x11`)

**Electron 39.0.0**
- Deprecated `--host-rules` flag (use `--host-resolver-rules`)
- `window.open` popups now always resizable (WHATWG spec)
- Shared texture OSR `paint` event structure changed

Reviewed By: motiz88

Differential Revision: D92154326
Summary:
Changelog:
[General][Changed] - **React Native DevTools**: Enable native macOS window merging

Reviewed By: motiz88

Differential Revision: D92154327
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meta-codesync bot commented Feb 3, 2026

@huntie has exported this pull request. If you are a Meta employee, you can view the originating Diff in D92154327.

@meta-cla meta-cla bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Feb 3, 2026
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