diff --git a/jest.setup.js b/jest.setup.js
new file mode 100644
index 0000000..ba34172
--- /dev/null
+++ b/jest.setup.js
@@ -0,0 +1,6 @@
+import '@testing-library/jest-dom';
+// jest.setup.js
+import { TextEncoder, TextDecoder } from 'util';
+global.TextEncoder = TextEncoder;
+global.TextDecoder = TextDecoder;
+