flutter-smell-list-performance

name: flutter-smell-list-performance description: "MUST use when lists/grids are slow or when large collections render. Flags non-builder lists, missing pagination, and improper item keys."

List Performance Smell

Smell signals

• Large lists rendered with Column/ListView(children: ...) instead of builders.
• Missing pagination or over-fetching in UI lists.
• Item widgets without stable keys when needed.

Fix guidance

• Use ListView.builder/SliverList.
• Paginate and fetch in controller/repo.
• Provide stable keys for items.