Configured jest.

jest.config.ts

@@ -0,0 +1,12 @@
+// jest.config.ts
+import { createDefaultPreset, type JestConfigWithTsJest } from 'ts-jest';
+
+const jestConfig: JestConfigWithTsJest = {
+  testEnvironment: "node",
+  preset: 'ts-jest/presets/js-with-ts-esm',
+  transform: {
+    "^.+.tsx?$": ["ts-jest",{}],
+  },
+};
+
+export default jestConfig;