flutter-performance

Identifies and eliminates performance bottlenecks in Flutter apps through systematic profiling and targeted optimization. Analyzes and optimizes Flutter application performance by identifying jank, excessive rebuilds, and expensive rendering operations. Implements best practices for UI rendering, state management, and layout constraints. Utilizes Flutter DevTools, Chrome DevTools (for web), and integration tests to generate actionable performance metrics, ensuring frames render within the strict 16ms budget. Evaluate the target application using the following decision tree to determine the optimization path: Establish a Performance Baseline To measure performance programmatically, create an integration test that records a performance timeline. STOP AND ASK THE USER: "Do you want to run a baseline integration test to capture timeline metrics before optimizing?" If yes, implement the following exact driver and test implementation: test_driver/perf_driver.dart (Immutable operation): integration_test/scrolling_test.dart : Run the test using: flutter drive --driver=test_driver/perf_driver.dart --target=integration_test/scrolling_test.dart --profile --no-dds Optimize UI Thread (Build Costs) If the UI thread exceeds 8ms per frame, refactor the widget tree: Optimize Raster Thread (Rendering Costs) If the Raster thread exceeds 8ms per frame, eliminate expensive painting operations: Fix...