avoid-initializing-in-on-mount

added in: 1.6.0

warning

Warns when a late final variable is being initialized in the Component's onMount method.

Since a Component might be removed and added again, attempt to reinitialize a late final variable will result in runtime exception.

Example

❌ Bad:

class MyComponent extends Component {
  late final int x;

  @override
  void onMount() {
    x = 1; // LINT
  }
}

✅ Good:

class MyComponent extends Component {
  int x;

  @override
  void onMount() {
    x = 1;
  }
}