Enable full ESM support for Node 20+ and modern dependencies, update Jest and build output configuration

- Set "type": "module" in package.json to enable ESM throughout the project.
- Changed "main" in package.json to "dist/index.js" to point to the bundled output generated by ncc.
- Updated Jest configuration (jest.config.js) to ESM format and to use babel-jest for TypeScript transformation.
- Added/updated babel.config.js in ESM format to support TypeScript and ESM for Jest.
- Ensured test scripts use NODE_OPTIONS=--experimental-vm-modules for Jest ESM compatibility.

babel.config.js

@@ -1,6 +1,12 @@
-module.exports = {
+export default {
   presets: [
-    ['@babel/preset-env', { targets: { node: 'current' } }],
-    '@babel/preset-typescript',
-  ],
+    [
+      '@babel/preset-env',
+      {
+        targets: { node: 'current' },
+        modules: false
+      }
+    ],
+    '@babel/preset-typescript'
+  ]
 };

dist/licenses.txt

@@ -528,7 +528,7 @@ THE SOFTWARE.
 
 @octokit/webhooks
 MIT
-Copyright (c) 2017 Gregor Martynus
+Copyright (c) GitHub 2025 - Licensed as MIT.
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

dist/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

jest.config.js

@@ -1,21 +1,15 @@
-/** @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$": "<rootDir>/node_modules/@github/dependency-submission-toolkit/dist/index.js",
-    },
-    extensionsToTreatAsEsm: [".ts"],
-    transformIgnorePatterns: ["/node_modules/(?!(octokit|\\@github\\/dependency-submission-toolkit)/)"],  // Ensure octokit and @github/dependency-submission-toolkit are transformed
-    globals: {
-      "ts-jest": {
-        useESM: true,
-      },
-    },
-  };
+import babel from 'babel-jest';
+
+export default {
+  testEnvironment: 'node',
+  extensionsToTreatAsEsm: ['.ts'],
+  transform: {
+    '^.+\\.ts$': ['babel-jest', { configFile: './babel.config.js' }]
+  },
+  moduleNameMapper: {},
+  verbose: true,
+  collectCoverage: true,
+  coverageDirectory: 'coverage',
+  testMatch: ['**/*.test.ts'],
+  resolver: undefined,
+};

package.json

@@ -2,11 +2,12 @@
   "name": "component-detection-action",
   "version": "1.0.0",
   "description": "Component detection action",
-  "main": "index.ts",
+  "main": "dist/index.js",
+  "type": "module",
   "scripts": {
     "lint": "eslint .",
     "prepare": "ncc build index.ts -o dist --source-map --license licenses.txt",
-    "test": "node --experimental-vm-modules node_modules/jest/bin/jest.js",
+    "test": "NODE_OPTIONS=--experimental-vm-modules jest",
     "all": "npm run lint && npm run prepare && npm run test"
   },
   "repository": {