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avoid-shrink-wrap-in-lists

added in: 1.6.0
warning
Free+

Warns when a ListView widget with shrinkWrap parameter is wrapped in a Column, Row or another ListView widget.

According to the Flutter documentation, using shrinkWrap in lists is expensive performance-wise and should be avoided, since using slivers is significantly cheaper and achieves the same or even better results.

Example​

❌ Bad:

Column(
  children: [
    Expanded(
      child: ListView(
        // LINT: Avoid passing 'shrinkWrap' to 'ListView' as it can degrade performance. Try using slivers instead.
        shrinkWrap: true,
        physics: const NeverScrollableScrollPhysics(),
        children: [],
      ),
    ),
  ],
),

✅ Good:

CustomScrollView(
  slivers: [
    // Correct, uses Sliver instead
    SliverList(
      delegate: SliverChildBuilderDelegate(
        (context, index) => Container(),
        childCount: someObject.length,
      ),
    ),
  ],
),

Additional Resources​