fix: preserve original objects

Author: IAmJulianAcosta

src/react-sortable.tsx

@@ -49,11 +49,14 @@ export class ReactSortable<T extends ItemInterface> extends Component<
     this.ref = createRef<HTMLElement>();
 
     // make all state false because we can't change sortable unless a mouse gesture is made.
-    const newList = props.list.map((item) => ({
-      ...item,
-      chosen: false,
-      selected: false,
-    }));
+    const newList = [...props.list];
+
+    newList.forEach((item: T) => {
+      Object.assign(item, {
+        chosen: false,
+        selected: false,
+      });
+    })
 
     props.setList(newList, this.sortable, store);
     invariant(
@@ -235,10 +238,14 @@ Please read the updated README.md at https://github.com/SortableJS/react-sortabl
     const otherList = [...store.dragging!.props.list];
     const customs = createCustoms(evt, otherList);
     removeNodes(customs);
-    const newList = handleStateAdd(customs, list, evt, clone).map((item) => ({
-      ...item,
-      selected: false,
-    }));
+
+    const newList = handleStateAdd(customs, list, evt, clone)
+
+    newList.forEach((item) => {
+      Object.assign(item, {
+        selected: false,
+      });
+    });
     setList(newList, this.sortable, store);
   }
 
@@ -289,7 +296,11 @@ Please read the updated README.md at https://github.com/SortableJS/react-sortabl
     }
 
     // remove item.selected from list
-    newList = newList.map((item) => ({ ...item, selected: false }));
+    newList.forEach((item: T) => {
+      Object.assign(item, {
+        selected: false,
+      });
+    })
     setList(newList, this.sortable, store);
   }
 
@@ -314,10 +325,9 @@ Please read the updated README.md at https://github.com/SortableJS/react-sortabl
     const { list, setList } = this.props;
     const newList = list.map((item, index) => {
       if (index === evt.oldIndex) {
-        return {
-          ...item,
+        Object.assign(item, {
           chosen: true,
-        };
+        });
       }
       return item;
     });
@@ -328,10 +338,9 @@ Please read the updated README.md at https://github.com/SortableJS/react-sortabl
     const { list, setList } = this.props;
     const newList = list.map((item, index) => {
       if (index === evt.oldIndex) {
-        return {
-          ...item,
+        Object.assign(item, {
           chosen: false,
-        };
+        });
       }
       return item;
     });
@@ -345,7 +354,12 @@ Please read the updated README.md at https://github.com/SortableJS/react-sortabl
 
   onSelect(evt: MultiDragEvent): void {
     const { list, setList } = this.props;
-    const newList = list.map((item) => ({ ...item, selected: false }));
+    const newList = [...list];
+    newList.forEach((item) => {
+      Object.assign(item, {
+        chosen: false,
+      });
+    });
     evt.newIndicies.forEach((curr) => {
       const index = curr.index;
       if (index === -1) {
@@ -362,7 +376,12 @@ Please read the updated README.md at https://github.com/SortableJS/react-sortabl
 
   onDeselect(evt: MultiDragEvent): void {
     const { list, setList } = this.props;
-    const newList = list.map((item) => ({ ...item, selected: false }));
+    const newList = [...list];
+    newList.forEach((item) => {
+      Object.assign(item, {
+        chosen: false,
+      });
+    });
     evt.newIndicies.forEach((curr) => {
       const index = curr.index;
       if (index === -1) return;