fix: merge should support shallow copy (#446)

* 5.32.3

* test: test driven

* test: test driven

* fix: shallow copy should work

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rc-util",
-  "version": "5.32.2",
+  "version": "5.32.3",
   "description": "Common Utils For React Component",
   "keywords": [
     "react",

src/utils/set.ts

@@ -70,9 +70,9 @@ function createEmpty<T>(source: T) {
 export function merge<T extends object>(...sources: T[]) {
   let clone = createEmpty(sources[0]);
 
-  const loopSet = new Set<object>();
-
   sources.forEach(src => {
+    const loopSet = new Set<object>();
+
     function internalMerge(path: Path) {
       const value = get(src, path);
 

tests/utils.test.js

@@ -192,6 +192,24 @@ describe('utils', () => {
           selector: ['K1', 'K2'],
         });
       });
+
+      it('shallow copy', () => {
+        const ori = {
+          list: [{ a: 1 }, { a: 2 }],
+        };
+
+        const cloneList = [...ori.list];
+        cloneList[0] = {
+          ...cloneList[0],
+          b: 3,
+        };
+
+        const merged = merge(ori, { list: cloneList });
+
+        expect(merged).toEqual({
+          list: [{ a: 1, b: 3 }, { a: 2 }],
+        });
+      });
     });
   });