checkout form

lib/domain/product/entities/product_quantity_entity.dart

@@ -0,0 +1,14 @@
+part of '../product.dart';
+
+@freezed
+class ProductQuantity with _$ProductQuantity {
+  const factory ProductQuantity({
+    required Product product,
+    ProductVariant? variant,
+    required int quantity,
+    String? notes,
+  }) = _ProductQuantity;
+
+  factory ProductQuantity.empty() =>
+      ProductQuantity(product: Product.empty(), quantity: 0);
+}