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avoid-getx-rx-inside-build

added in: 1.10.0
warning
Pro+

Warns when GetX Rx primitives are instantiated inside the build method.

Instantiating Rx primitives inside the build method can lead to memory leaks as they will be recreated on every rebuild.

Example​

❌ Bad:

class _SomeState extends State<Some> {
  @override
  Widget build(BuildContext context) {
    final count = 0.obs; // LINT: Avoid using '.obs' or instantiating Rx primitives inside the 'build' method.

    ...
  }
}

✅ Good:

class _SomeState extends State<Some> {
  final count = 0.obs; // Correct, used as a field

  @override
  Widget build(BuildContext context) {
    ...
  }
}