[shubh73]

Summary:

BaseViewManagerDelegate resets three props to values that don't match the @ReactProp defaults in BaseViewManager when they're removed:

Prop	BaseViewManager default	BaseViewManagerDelegate
shadowColor	Color.BLACK	0
outlineOffset	0f	YogaConstants.UNDEFINED
outlineWidth	0f	YogaConstants.UNDEFINED

This affects every component whose view manager uses a codegen delegate (e.g. Switch, Modal, RefreshControl, and third-party Fabric components), but not View. Removing shadowColor from a view with elevation makes the shadow disappear instead of going back to black, and removing outlineOffset makes the outline disappear instead of drawing it with no offset.

This makes the delegate use the same defaults as BaseViewManager.

Changelog:

[ANDROID] [FIXED] - Fix shadowColor, outlineOffset and outlineWidth not resetting to their defaults on components with a codegen view manager delegate

Test Plan:

Added setShadowColorResetsToBlack, setOutlineOffsetResetsToZero and setOutlineWidthResetsToZero to BaseViewManagerDelegateTest. They pass with this change and fail without it (0 instead of -16777216, NaNf instead of 0.0f).

./gradlew :packages:react-native:ReactAndroid:testDebugUnitTest --tests "com.facebook.react.uimanager.BaseViewManagerDelegateTest"

Also checked in RNTester on an OPPO K12x 5G (CPH2667, Android 16) with a View and a Switch side by side, each with elevation + shadowColor: 'red' and outlineWidth + outlineOffset: 8, then removing shadowColor and outlineOffset:

• Before: View resets correctly; on Switch the shadow and the outline both disappear.
• After: Switch matches View (black shadow, outline with no offset).

Before	After

🤖 Generated with Claude Code

[github-actions]

Visual regression

1 visual difference(s) at ea918849cbbf. Visual differences need maintainer approval. Review the report, then apply visual-change-approved.

ios: no capture

android transform/string/default: Changed, 1 px (0.000%)

Expected and Captured

Expected	Captured

[meta-codesync]

@javache has imported this pull request. If you are a Meta employee, you can view this in D127789219.

[react-native-bot]

This pull request was successfully merged by @shubh73 in dfed2d9

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