fix(shallow): fallback map-like iterator comparison (#2795)

* add failing test

* add a fallback

src/vanilla/shallow.ts

@@ -40,10 +40,14 @@ export function shallow<T>(objA: T, objB: T): boolean {
       nextA.value.length === 2 &&
       nextB.value.length === 2
     ) {
+      try {
         return compareMapLike(
           objA as Iterable<[unknown, unknown]>,
           objB as Iterable<[unknown, unknown]>,
         )
+      } catch {
+        // fallback
+      }
     }
     while (!nextA.done && !nextB.done) {
       if (!Object.is(nextA.value, nextB.value)) {

tests/vanilla/shallow.test.tsx

@@ -97,6 +97,11 @@ describe('shallow', () => {
     const b = new URLSearchParams({ zustand: 'shallow' })
     expect(shallow(a, b)).toBe(false)
   })
+
+  it('should work with nested arrays (#2794)', () => {
+    const arr = [1, 2]
+    expect(shallow([arr, 1], [arr, 1])).toBe(true)
+  })
 })
 
 describe('unsupported cases', () => {