added babel to convert es modules to cjs

tests/jest.config.js

@@ -1,11 +0,0 @@
-/** @type {import('jest').Config} */
-const config = {
-    clearMocks: true,
-    collectCoverage: true,
-    coverageDirectory: "coverage",
-    setupFiles: ["<rootDir>/jest.setup.js"], // path to a setup module to configure the testing environment before each test
-    transform: {},
-    verbose: true,
-};
-
-export default config;

tests/jest.setup.js

@@ -1,2 +0,0 @@
-import * as dotenv from "dotenv";
-dotenv.config({ path: "env.jest" });