ensure method

@override Future<void> ensure([ FutureOr<void> fn(T value)? ])

Ensures initialization, optionally running a function.

Parameters:

• fn: Optional function to run after initialization

Example:

await counter.ensure(() {
  counter.value++; // Safe to write
});

Implementation

@override
Future<void> ensure([FutureOr<void> Function(T value)? fn]) async {
  // Sync version is always initialized
  await fn?.call(super.value);
}