fix(CSS): handle PlatformColor and DynamicColorIOS values - #10282
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MatiPl01 wants to merge 11 commits into
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fix(CSS): handle PlatformColor and DynamicColorIOS values#10282MatiPl01 wants to merge 11 commits into
MatiPl01 wants to merge 11 commits into
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository UI Review profile: ASSERTIVE Plan: Pro Plus Run ID: 📒 Files selected for processing (8)
💤 Files with no reviewable changes (2)
📝 WalkthroughSummary by CodeRabbit
WalkthroughThe PR adds ChangesPlatform Color Support
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The PR adds platform-color animation support, but mixed platform-color and CSS-color animations still silently fall back instead of reporting the required unsupported-animation error. This can hide an invalid animation contract, so merge should wait for correction or explicit owner acceptance. Sequence Diagram(s)sequenceDiagram
participant Input as JSI or Folly dynamic input
participant Detector as isPlatformColorPayload
participant CSSValue as CSSPlatformColor
participant Registry as InterpolatorRegistry
participant Interpolator as CSS color interpolator
Input->>Detector: validate platform-color payload
Detector->>CSSValue: create unresolved color value
CSSValue->>Registry: provide CSSPlatformColor with CSSColor fallback
Registry->>Interpolator: configure style color interpolation
Interpolator-->>Input: select fallback color during interpolation
🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Actionable comments posted: 2
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Inline comments:
In
`@packages/react-native-reanimated/Common/cpp/reanimated/CSS/common/values/CSSValueVariant.cpp`:
- Line 143: Update CSSValueVariant::interpolate to detect CSSPlatformColor at
either endpoint before variant-index fallback interpolation, and throw the
existing descriptive unsupported-animation error for mixed
CSSPlatformColor/CSSColor transitions; preserve normal interpolation for
matching alternatives.
In
`@packages/react-native-reanimated/Common/cpp/reanimated/CSS/utils/platformColor.cpp`:
- Around line 42-47: Update the nested dynamic-value validation after retrieving
dynamicColor so function values are rejected before acceptance: require
dynamicColor to be an object, not a function, and not an array. Preserve the
existing semantic and resource_paths checks.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: Repository UI
Review profile: ASSERTIVE
Plan: Pro Plus
Run ID: 1d229fba-e4aa-43f7-9076-cb58ac3bd54f
📒 Files selected for processing (8)
packages/react-native-reanimated/Common/cpp/reanimated/CSS/InterpolatorRegistry.cpppackages/react-native-reanimated/Common/cpp/reanimated/CSS/common/values/CSSPlatformColor.cpppackages/react-native-reanimated/Common/cpp/reanimated/CSS/common/values/CSSPlatformColor.hpackages/react-native-reanimated/Common/cpp/reanimated/CSS/common/values/CSSValueVariant.cpppackages/react-native-reanimated/Common/cpp/reanimated/CSS/interpolation/InterpolatorFactory.hpackages/react-native-reanimated/Common/cpp/reanimated/CSS/interpolation/values/SimpleValueInterpolator.cpppackages/react-native-reanimated/Common/cpp/reanimated/CSS/utils/platformColor.cpppackages/react-native-reanimated/Common/cpp/reanimated/CSS/utils/platformColor.h
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August 14, 2026 10:01
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PlatformColor and DynamicColorIOS payloads reached CSSColor, which accepts only numbers and bools, so the variant found no matching type and threw. They now parse into CSSPlatformColor, which keeps the payload and hands it back to RN from toDynamic() - static platform colors render as before. Interpolating one still throws, with a message saying so; resolving a payload against the animated view comes next.
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MatiPl01
marked this pull request as ready for review
August 14, 2026 18:24
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PlatformColorandDynamicColorIOSpayloads are objects, butCSSColoraccepts only numbers and bools, so a color property carrying one killed the app withNo compatible type found for construction.They now parse into
CSSPlatformColor, which keeps the payload and hands it back fromtoDynamic()for React Native to resolve against the surface's theme, exactly as for a static style.Resolving one in C++ needs the animated view, which is not implemented here, so a platform color reports that it cannot interpolate and the variant switches over instead. Nothing throws.
It is also the first value type that resolves without being relative to a view property, so
ResolvableValueInterpolatorand its config becomeRelative*to match what they carry.Testing
iOS and Android build, jest and static checks pass. On the simulator: plain color ramps unchanged, static
PlatformColorrenders, and both platform-to-platform and platform-to-plain switch over with the app alive.