diff --git a/package.json b/package.json
index 5a2d0a0..6907f8c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@donedeal0/superdiff",
-  "version": "4.2.1",
+  "version": "4.2.2",
   "type": "module",
   "description": "Superdiff provides a rich and readable diff for arrays, objects, texts and coordinates. It supports stream and file inputs for handling large datasets efficiently, is battle-tested, has zero dependencies, and offers a top-tier performance.",
   "main": "dist/index.js",
diff --git a/src/lib/utils/index.ts b/src/lib/utils/index.ts
index 39afd7c..04af0b5 100644
--- a/src/lib/utils/index.ts
+++ b/src/lib/utils/index.ts
@@ -14,10 +14,13 @@ export function isEqual(
 ): boolean {
   if (a === b) return true;
   if (typeof a !== typeof b) return false;
+  const aIsArray = Array.isArray(a);
+  const bIsArray = Array.isArray(b)
+  if (aIsArray !== bIsArray) return false;
   if (a === null || b === null) return a === b;
   if (typeof a !== "object") return a === b;
 
-  if (Array.isArray(a) && Array.isArray(b)) {
+  if (aIsArray && bIsArray) {
     if (a.length !== b.length) return false;
     if (!options.ignoreArrayOrder) {
       for (let i = 0; i < a.length; i++) {
@@ -68,4 +71,4 @@ export function isEqual(
  */
 export function isObject(value: unknown): value is Record<string, unknown> {
   return typeof value === "object" && !!value && !Array.isArray(value);
-}
+}
\ No newline at end of file
diff --git a/src/lib/utils/utils.test.ts b/src/lib/utils/utils.test.ts
index f719456..14c72c9 100644
--- a/src/lib/utils/utils.test.ts
+++ b/src/lib/utils/utils.test.ts
@@ -21,6 +21,7 @@ describe("isEqual", () => {
     ).toBeTruthy();
   });
   it("return false if data are different", () => {
+    expect(isEqual({}, [])).toBeFalsy()
     expect(isEqual(null, "hello")).toBeFalsy();
     expect(isEqual("hello", undefined)).toBeFalsy();
     expect(isEqual("hello", "howdy")).toBeFalsy();