⚡ Optimize AppTheme by caching ThemeData instances#9
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Convert `darkTheme` and `lightTheme` getters in `AppTheme` to static final variables. This prevents the expensive creation of new `ThemeData` instances on every access, significantly improving the performance. Co-authored-by: hexamh <264230460+hexamh@users.noreply.github.com>
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💡 What: Converted
AppTheme.darkThemeandAppTheme.lightThemegetters to static final variables so that the expensiveThemeDatacreation happens only once. Added a performance benchmark test to verify the optimization.🎯 Why:
ThemeDatacreation in Flutter builds many nested configurations (like TextTheme, ColorScheme, AppBarTheme, etc.). Recreating it on every access (via getters) incurs unnecessary overhead, leading to poor performance. Caching the immutableThemeDatainstances prevents this overhead.📊 Measured Improvement:
Created a
test/theme_benchmark_test.dartto measure the cost of fetching these properties repeatedly (1000 iterations).Before changes:
Baseline darkTheme (1000 iterations): 235 us
Baseline lightTheme (1000 iterations): 67 us
After changes (caching as static final):
Baseline darkTheme (1000 iterations): 146 us
Baseline lightTheme (1000 iterations): 23 us
Performance significantly improved (~40% improvement in
darkThemeand ~65% inlightThemecreation/access).PR created automatically by Jules for task 9558563962990664908 started by @hexamh