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prefer-define-hero-tag

added in: 1.6.0
warning

Warns when a Widget has an unset heroTag.

When heroTag is not set, the default value is used. Having two or more widgets with the same heroTag will result in an error.

Example​

❌ Bad:

FloatingActionButton(
  onPressed: () => context.read<CounterCubit>().increment(),
  child: const Icon(Icons.add),
); // LINT

✅ Good:

FloatingActionButton(
  onPressed: () => context.read<CounterCubit>().increment(),
  child: const Icon(Icons.add),
  heroTag: 'increment_heroTag',
);