1 files changed, 40 insertions, 0 deletions
diff --git a/src-migrate/utils/cart.js b/src-migrate/utils/cart.js
index ebd771e5..4bdee49a 100644
--- a/src-migrate/utils/cart.js
+++ b/src-migrate/utils/cart.js
@@ -413,3 +413,43 @@ export const removeSelectedItemsFromCookie = (productIds) => {
     return {};
   }
 };
+
+class QuantityUpdateState {
+  constructor() {
+    this.updateItems = new Set();
+    this.listeners = new Set();
+  }
+
+  startUpdate(itemId) {
+    this.updateItems.add(itemId);
+    this.notifyListeners();
+  }
+
+  endUpdate(itemId) {
+    this.updateItems.delete(itemId);
+    this.notifyListeners();
+  }
+
+  isAnyQuantityUpdating() {
+    return this.updateItems.size > 0;
+  }
+
+  isItemUpdating(itemId) {
+    return this.updateItems.has(itemId);
+  }
+
+  addListener(callback) {
+    this.listeners.add(callback);
+  }
+
+  removeListener(callback) {
+    this.listeners.delete(callback);
+  }
+
+  notifyListeners() {
+    const isUpdating = this.isAnyQuantityUpdating();
+    this.listeners.forEach(callback => callback(isUpdating));
+  }
+}
+
+export const quantityUpdateState = new QuantityUpdateState();
+\ No newline at end of file