Создал класс дебаунса

lib/components/debounce.dart

@@ -0,0 +1,18 @@
+import 'dart:async';
+import 'dart:ui';
+
+class Debounce {
+  factory Debounce() => _instance;
+
+  Debounce._();
+
+  static final Debounce _instance = Debounce._();
+
+  static Timer? _timer;
+
+  static void run(VoidCallback action,
+      {Duration delay = const Duration(milliseconds: 500)}) {
+    _timer?.cancel();
+    _timer = Timer(delay, action);
+  }
+}