[YogendraShelke]

Summary

In CSSPlatformTransitionProxy::processConfig, matchedValues is declared and incremented only inside two #ifndef NDEBUG blocks:

#ifndef NDEBUG
  size_t matchedValues = 0;
#endif // NDEBUG
  ...
#ifndef NDEBUG
    if (hasValue) {
      ++matchedValues;
    }
#endif // NDEBUG

but the assert reading it right after the loop was not wrapped the same way:

  react_native_assert(
      matchedValues == config.changedProperties.size() && "[Reanimated] CSS transition value diff without settings");

This is inconsistent with the guard pattern already used twice earlier in the same function. This PR wraps the assert in the same #ifndef NDEBUG guard for consistency.

Test plan

Mechanical, one-line change matching an existing pattern in the same function — no behavior change in debug builds (the assert still runs); in builds where NDEBUG is defined, matchedValues is no longer referenced outside its declaration.

🤖 Generated with Claude Code

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Reviewing files that changed from the base of the PR and between 5b332cf and e0060dd.

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• packages/react-native-reanimated/Common/cpp/reanimated/CSS/core/transition/CSSPlatformTransitionProxy.cpp

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Walkthrough

The changed-value and transition-settings consistency assertion now runs in debug builds. Release builds omit the assertion.

Priority: Low

Change: Bug fix

Merge Risk: Minimal · up to 5b332

This change preserves the debug consistency check and avoids referencing its debug-only counter in release builds. No merge-blocking risk is identified.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		The title clearly and concisely identifies the main change: guarding the trailing processConfig assertion with NDEBUG.
Description check		The description directly explains the assertion guard change, its debug and release behavior, and the test plan.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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