Fix tests by using jest-babel

babel.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  presets: [
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+    '@babel/preset-typescript',
+  ],
+};

jest.config.js

@@ -1,5 +1,21 @@
 /** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
 module.exports = {
+    transform: {
+      "^.+\\.tsx?$": "ts-jest",
+      "^.+\\.[t|j]sx?$": "babel-jest", // Use Babel for transforming JS and TS files
+      "^.+\\.mjs$": "jest-transform-stub",  // Use the stub to handle ES modules
+    },
     preset: 'ts-jest',
     testEnvironment: 'node',
+    moduleNameMapper: {
+      "^octokit$": "<rootDir>/node_modules/octokit/dist-bundle/index.js",
+      "^@github/dependency-submission-toolkit$": "<rootDir>/node_modules/@github/dependency-submission-toolkit/dist/index.js",
+    },
+    extensionsToTreatAsEsm: [".ts"],
+    transformIgnorePatterns: ["/node_modules/(?!(octokit|\\@github\\/dependency-submission-toolkit)/)"],  // Ensure octokit and @github/dependency-submission-toolkit are transformed
+    globals: {
+      "ts-jest": {
+        useESM: true,
+      },
+    },
   };

package.json

@@ -36,11 +36,14 @@
     "yaml": "^2.2.2"
   },
   "devDependencies": {
+    "@babel/preset-env": "^7.25.4",
+    "@babel/preset-typescript": "^7.24.7",
     "@types/glob": "^8.1.0",
     "@types/jest": "^29.5.1",
     "@vercel/ncc": "^0.36.1",
     "eslint": "^8.46.0",
     "jest": "^29.5.0",
+    "jest-transform-stub": "^2.0.0",
     "ts-jest": "^29.1.0"
   }
 }