ren 0.3.3

A static analysis tool that measures the performance weight of each feature in your Flutter app — detecting costly AST patterns and reporting a gravity score per feature.

0.3.3

Changed

• Pattern output now shows the absolute file path instead of a relative path — enables Cmd+Click / Ctrl+Click to open the file directly.

0.3.2

Fixed

• LeakVisitor._getMembers — added third fallback via declaredFragment for analyzer versions where neither members nor declaredMembers are available, preventing NoSuchMethodError on ClassDeclarationImpl.
• LeakVisitor._getClassName / _getMethodName / _getVariableName — added declaredElement?.name as final fallback for full version coverage.

0.3.1

Fixed

• ConfigLoader now normalizes projectPath via p.normalize(p.absolute(...)).

0.3.0

Added

• AnalysisContextCollection support — ren now uses full semantic analysis instead of parseString, resolving imports, re-exports, and type aliases correctly. Falls back to parseString automatically if the context cannot be built (e.g. pub get not run).

0.2.3

Fixed

• Feature scanner now includes .dart files at the root of the specified feature folder as a named feature — previously only sub-directories were scanned, causing files at the root level to be silently skipped.

0.2.2

Fixed

• LeakVisitor — added curly braces to all single-line if statements in _detectResourceType to satisfy curly_braces_in_flow_control_structures lint rule.

0.2.1

Fixed

• LeakVisitor compatibility with analyzer >=7.1.0 — added fallback helpers for ClassDeclaration.name, ClassDeclaration.members, MethodDeclaration.name, and VariableDeclaration.name to support lower bound versions without breaking newer ones.
• ChangeNotifier and ValueNotifier leak fix message now clarifies that Provider/Riverpod disposes them automatically.

0.2.0

Added

• ren --init — scans project structure and generates ren.yaml automatically.
• Auto-discovery — detects feature root without --features flag, supports non-conventional structures (lib/ui/screens, lib/presentation/pages, etc.).
• ren.yaml support — project-level configuration:
  • features, fail_on, ignore, weights, custom_rules.
  • CLI flags always take priority over ren.yaml.
• Actionable fix per pattern — every detected pattern includes a -> suggestion.
• Resource leak detection (LeakVisitor) — verifies that StreamController, StreamSubscription, Timer, AnimationController, TextEditingController, ScrollController, FocusNode, PageController, TabController, ValueNotifier, ChangeNotifier are closed in dispose().
• Score normalization by pattern level — presence, context, and risk patterns use separate weight ceilings.
• Output improvements — separators between features, pattern level icons (⚪ 🟡 🔴), gravity legend at the top of the report.
• JSON output now includes level, context, reason, and fix per pattern.
• Windows hint — suggests Remove-Item Alias:ren -Force on PowerShell.

0.1.0

Added

• Compound rule detection — 20+ widget combinations with elevated weights:
  • Level 3 (critical × 2.5) — BackdropFilter/ShaderMask/ImageFiltered/ColorFiltered inside ListView/GridView, Opacity/ClipPath/ClipRRect inside AnimatedBuilder, Opacity inside ListView/GridView.
  • Level 2 (high × 1.5) — BackdropFilter inside Stack/PageView, NetworkImage inside ListView/GridView, CustomPaint/ClipPath inside AnimatedBuilder/ListView/GridView, Hero inside ListView/GridView, ShaderMask inside AnimatedBuilder.
• Top contributors breakdown per feature — shows which patterns contribute most to the gravity score.
• [inside ParentWidget] context tag on compound patterns.
• renw executable — fallback for Windows PowerShell where ren conflicts with Rename-Item.
• New patterns — ClipRRect, Hero.
• lambda-depth tracking to avoid false positives on setState inside callbacks.

Fixed

• setState false positives on callbacks with target (e.g. state.setState, logic.setState).
• GridView.count and other non-lazy named constructors now correctly flagged.
• Image.network detection via full name matching in visitMethodInvocation.

0.0.1

• Feature detection by folder convention (lib/features/, lib/modules/).
• --features flag for custom feature roots (e.g. lib/ui/screens).
• --exclude flag — comma-separated list of paths to exclude from analysis (e.g. lib/generated,lib/_tools).
• Simplified CLI — ren runs analysis directly without subcommand.
• AST-based pattern detection across six categories:
  • GPU-costly widgets — BackdropFilter, ShaderMask, Opacity, ColorFiltered, ImageFiltered, saveLayer, ClipPath, CustomPaint.
  • Unoptimized lists — ListView, GridView, SingleChildScrollView, Wrap.
  • Uncached images — Image.network, NetworkImage, FadeInImage.
  • Rebuild patterns — RepaintBoundary, MediaQuery.of.
  • Memory leaks — Timer, Timer.periodic, StreamController, StreamSubscription.
  • Lifecycle misuse — setState in build, setState in initState, setState in dispose.
• Gravity score (0–100) per feature mapped to LOW / MEDIUM / HIGH / CRITICAL.
• ANSI console output with gravity bar and per-pattern hints.
• JSON output (--format json) for CI/CD pipelines.
• --fail-on flag — exits with code 1 if any feature reaches the specified level.