import 'dart:async';

/// Runs an action after [duration] of inactivity, cancelling any pending
/// run each time [run] is called again.
class Debouncer {
  Debouncer(this.duration);

  final Duration duration;
  Timer? _timer;

  void run(void Function() action) {
    _timer?.cancel();
    _timer = Timer(duration, action);
  }

  void cancel() => _timer?.cancel();
}