feat: migrate to ESM and update Jest configuration

- Added package.json in dist/setup to specify module type as ESM.
- Updated jest.config.js to support ESM with ts-jest and added moduleNameMapper for .js extensions.
- Created jest.setup.js to ensure Jest globals are available in ESM mode.
- Modified test script in package.json to use node with experimental VM modules for Jest.
- Updated imports in various distribution files to include .js extensions for ESM compatibility.
- Adjusted tsconfig.json to exclude __tests__ directory and maintain ESM settings.
- Updated package-lock.json to include new dependencies and their versions.

__tests__/authutil.test.ts

@@ -3,17 +3,22 @@ import fs from 'fs';
 import * as path from 'path';
 import * as core from '@actions/core';
 import * as io from '@actions/io';
-import * as auth from '../src/authutil';
-import * as cacheUtils from '../src/cache-utils';
+import * as auth from '../src/authutil.js';
+import * as cacheUtils from '../src/cache-utils.js';
+import {fileURLToPath} from 'url';
+import {jest, describe, beforeEach, afterEach, it, expect} from '@jest/globals';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
 
 let rcFile: string;
 
 describe('authutil tests', () => {
   const _runnerDir = path.join(__dirname, 'runner');
 
-  let cnSpy: jest.SpyInstance;
-  let logSpy: jest.SpyInstance;
-  let dbgSpy: jest.SpyInstance;
+  let cnSpy: any;
+  let logSpy: any;
+  let dbgSpy: any;
 
   beforeAll(async () => {
     const randPath = path.join(Math.random().toString(36).substring(7));

__tests__/cache-restore.test.ts

@@ -3,9 +3,13 @@ import * as cache from '@actions/cache';
 import * as path from 'path';
 import * as glob from '@actions/glob';
 import osm from 'os';
+import {fileURLToPath} from 'url';
 
-import * as utils from '../src/cache-utils';
-import {restoreCache} from '../src/cache-restore';
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+import * as utils from '../src/cache-utils.js';
+import {restoreCache} from '../src/cache-restore.js';
 
 describe('cache-restore', () => {
   process.env['GITHUB_WORKSPACE'] = path.join(__dirname, 'data');

__tests__/cache-save.test.ts

@@ -3,10 +3,14 @@ import * as cache from '@actions/cache';
 import * as glob from '@actions/glob';
 import fs from 'fs';
 import path from 'path';
+import {fileURLToPath} from 'url';
 
-import * as utils from '../src/cache-utils';
-import {run} from '../src/cache-save';
-import {State} from '../src/constants';
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+import * as utils from '../src/cache-utils.js';
+import {run} from '../src/cache-save.js';
+import {State} from '../src/constants.js';
 
 describe('run', () => {
   const yarnFileHash =

__tests__/cache-utils.test.ts

@@ -1,19 +1,23 @@
 import * as core from '@actions/core';
 import * as cache from '@actions/cache';
 import path from 'path';
-import * as utils from '../src/cache-utils';
+import * as utils from '../src/cache-utils.js';
 import {
   PackageManagerInfo,
   isCacheFeatureAvailable,
   supportedPackageManagers,
   isGhes,
   resetProjectDirectoriesMemoized
-} from '../src/cache-utils';
+} from '../src/cache-utils.js';
 import fs from 'fs';
-import * as cacheUtils from '../src/cache-utils';
+import * as cacheUtils from '../src/cache-utils.js';
 import * as glob from '@actions/glob';
 import {Globber} from '@actions/glob';
-import {MockGlobber} from './mock/glob-mock';
+import {MockGlobber} from './mock/glob-mock.js';
+import {fileURLToPath} from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
 
 describe('cache-utils', () => {
   const versionYarn1 = '1.2.3';

__tests__/canary-installer.test.ts

@@ -8,9 +8,9 @@ import fs from 'fs';
 import cp from 'child_process';
 import osm from 'os';
 import path from 'path';
-import * as main from '../src/main';
-import * as auth from '../src/authutil';
-import {INodeVersion} from '../src/distributions/base-models';
+import * as main from '../src/main.js';
+import * as auth from '../src/authutil.js';
+import {INodeVersion} from '../src/distributions/base-models.js';
 
 import nodeTestManifest from './data/versions-manifest.json';
 import nodeTestDist from './data/node-dist-index.json';

__tests__/main.test.ts

@@ -7,12 +7,16 @@ import * as io from '@actions/io';
 import fs from 'fs';
 import path from 'path';
 import osm from 'os';
+import {fileURLToPath} from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
 
 import each from 'jest-each';
 
-import * as main from '../src/main';
-import * as util from '../src/util';
-import OfficialBuilds from '../src/distributions/official_builds/official_builds';
+import * as main from '../src/main.js';
+import * as util from '../src/util.js';
+import OfficialBuilds from '../src/distributions/official_builds/official_builds.js';
 
 describe('main tests', () => {
   let inputs = {} as any;

__tests__/mock/glob-mock.test.ts

@@ -1,4 +1,4 @@
-import {MockGlobber} from './glob-mock';
+import {MockGlobber} from './glob-mock.js';
 
 describe('mocked globber tests', () => {
   it('globber should return generator', async () => {

__tests__/nightly-installer.test.ts

@@ -8,9 +8,9 @@ import fs from 'fs';
 import cp from 'child_process';
 import osm from 'os';
 import path from 'path';
-import * as main from '../src/main';
-import * as auth from '../src/authutil';
-import {INodeVersion} from '../src/distributions/base-models';
+import * as main from '../src/main.js';
+import * as auth from '../src/authutil.js';
+import {INodeVersion} from '../src/distributions/base-models.js';
 
 import nodeTestManifest from './data/versions-manifest.json';
 import nodeTestDist from './data/node-dist-index.json';

__tests__/rc-installer.test.ts

@@ -8,9 +8,9 @@ import fs from 'fs';
 import cp from 'child_process';
 import osm from 'os';
 import path from 'path';
-import * as main from '../src/main';
-import * as auth from '../src/authutil';
-import {INodeVersion} from '../src/distributions/base-models';
+import * as main from '../src/main.js';
+import * as auth from '../src/authutil.js';
+import {INodeVersion} from '../src/distributions/base-models.js';
 
 import nodeTestDist from './data/node-dist-index.json';
 import nodeTestDistNightly from './data/node-nightly-index.json';

dist/cache-save/101.index.js

@@ -1,7 +1,6 @@
-"use strict";
-exports.id = 101;
-exports.ids = [101];
-exports.modules = {
+export const id = 101;
+export const ids = [101];
+export const modules = {
 
 /***/ 9101:
 /***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {
@@ -448,4 +447,3 @@ async function toFormData(Body, ct) {
 /***/ })
 
 };
-;

dist/cache-save/package.json

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

dist/setup/101.index.js

@@ -1,16 +1,15 @@
-"use strict";
-exports.id = 101;
-exports.ids = [101];
-exports.modules = {
+export const id = 101;
+export const ids = [101];
+export const modules = {
 
-/***/ 29101:
+/***/ 9101:
 /***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {
 
 /* harmony export */ __webpack_require__.d(__webpack_exports__, {
 /* harmony export */   toFormData: () => (/* binding */ toFormData)
 /* harmony export */ });
 /* harmony import */ var fetch_blob_from_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(9802);
-/* harmony import */ var formdata_polyfill_esm_min_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(83018);
+/* harmony import */ var formdata_polyfill_esm_min_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(3018);
 
 
 
@@ -448,4 +447,3 @@ async function toFormData(Body, ct) {
 /***/ })
 
 };
-;

dist/setup/package.json

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

jest.config.js

@@ -5,14 +5,21 @@ export default {
   testMatch: ['**/*.test.ts'],
   testRunner: 'jest-circus/runner',
   extensionsToTreatAsEsm: ['.ts'],
-  globals: {
-    'ts-jest': {
-      useESM: true
-    }
-  },
   transform: {
-    '^.+\\.ts$': 'ts-jest'
+    '^.+\\.ts$': ['ts-jest', {
+      useESM: true,
+      tsconfig: {
+        module: 'es2022',
+        target: 'es2022'
+      }
+    }]
   },
   preset: 'ts-jest/presets/default-esm',
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1'
+  },
+  transformIgnorePatterns: [
+    'node_modules/(?!(node-fetch|fetch-blob|formdata-polyfill|data-uri-to-buffer)/)'
+  ],
   verbose: true
 }

jest.setup.js

@@ -0,0 +1,5 @@
+// Jest setup file to ensure globals are available in ESM mode
+import { jest } from '@jest/globals';
+
+// Make jest available globally
+globalThis.jest = jest;

package-lock.json

@@ -4695,6 +4695,33 @@
       "integrity": "sha512-Tj+HTDSJJKaZnfiuw+iaF9skdPpTo2GtEly5JHnWV/hfv2Qj/9RKsGISQtLh2ox3l5EAGw487hnBee0sIJ6v2g==",
       "dev": true
     },
+    "node_modules/neo-async": {
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
+      "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/node-domexception": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/node-domexception/-/node-domexception-1.0.0.tgz",
+      "integrity": "sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==",
+      "deprecated": "Use your platform's native DOMException instead",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/jimmywarting"
+        },
+        {
+          "type": "github",
+          "url": "https://paypal.me/jimmywarting"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.5.0"
+      }
+    },
     "node_modules/node-fetch": {
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-3.3.2.tgz",

package.json

@@ -14,7 +14,7 @@
     "format-check": "prettier --no-error-on-unmatched-pattern --config ./.prettierrc.js --check \"**/*.{ts,yml,yaml}\"",
     "lint": "eslint --config ./.eslintrc.js \"**/*.ts\"",
     "lint:fix": "eslint --config ./.eslintrc.js \"**/*.ts\" --fix",
-    "test": "jest --coverage",
+    "test": "node --experimental-vm-modules node_modules/.bin/jest --coverage",
     "pre-checkin": "npm run format && npm run lint:fix && npm run build && npm test"
   },
   "repository": {

src/distributions/base-distribution-prerelease.ts

@@ -2,8 +2,8 @@ import * as tc from '@actions/tool-cache';
 
 import semver from 'semver';
 
-import BaseDistribution from './base-distribution';
-import {NodeInputs} from './base-models';
+import BaseDistribution from './base-distribution.js';
+import {NodeInputs} from './base-models.js';
 
 export default abstract class BasePrereleaseNodejs extends BaseDistribution {
   protected abstract distribution: string;

src/distributions/base-distribution.ts

@@ -11,7 +11,7 @@ import * as path from 'path';
 import os from 'os';
 import fs from 'fs';
 
-import {NodeInputs, INodeVersion, INodeVersionInfo} from './base-models';
+import {NodeInputs, INodeVersion, INodeVersionInfo} from './base-models.js';
 
 export default abstract class BaseDistribution {
   protected httpClient: hc.HttpClient;

src/distributions/installer-factory.ts

@@ -1,9 +1,9 @@
-import BaseDistribution from './base-distribution';
-import {NodeInputs} from './base-models';
-import NightlyNodejs from './nightly/nightly_builds';
-import OfficialBuilds from './official_builds/official_builds';
-import RcBuild from './rc/rc_builds';
-import CanaryBuild from './v8-canary/canary_builds';
+import BaseDistribution from './base-distribution.js';
+import {NodeInputs} from './base-models.js';
+import NightlyNodejs from './nightly/nightly_builds.js';
+import OfficialBuilds from './official_builds/official_builds.js';
+import RcBuild from './rc/rc_builds.js';
+import CanaryBuild from './v8-canary/canary_builds.js';
 
 enum Distributions {
   DEFAULT = '',

src/distributions/nightly/nightly_builds.ts

@@ -1,5 +1,5 @@
-import BasePrereleaseNodejs from '../base-distribution-prerelease';
-import {NodeInputs} from '../base-models';
+import BasePrereleaseNodejs from '../base-distribution-prerelease.js';
+import {NodeInputs} from '../base-models.js';
 
 export default class NightlyNodejs extends BasePrereleaseNodejs {
   protected distribution = 'nightly';

src/distributions/official_builds/official_builds.ts

@@ -2,8 +2,8 @@ import * as core from '@actions/core';
 import * as tc from '@actions/tool-cache';
 import path from 'path';
 
-import BaseDistribution from '../base-distribution';
-import {NodeInputs, INodeVersion, INodeVersionInfo} from '../base-models';
+import BaseDistribution from '../base-distribution.js';
+import {NodeInputs, INodeVersion, INodeVersionInfo} from '../base-models.js';
 
 interface INodeRelease extends tc.IToolRelease {
   lts?: string;

src/distributions/rc/rc_builds.ts

@@ -1,5 +1,5 @@
-import BaseDistribution from '../base-distribution';
-import {NodeInputs} from '../base-models';
+import BaseDistribution from '../base-distribution.js';
+import {NodeInputs} from '../base-models.js';
 
 export default class RcBuild extends BaseDistribution {
   constructor(nodeInfo: NodeInputs) {

src/distributions/v8-canary/canary_builds.ts

@@ -1,5 +1,5 @@
-import BasePrereleaseNodejs from '../base-distribution-prerelease';
-import {NodeInputs} from '../base-models';
+import BasePrereleaseNodejs from '../base-distribution-prerelease.js';
+import {NodeInputs} from '../base-models.js';
 
 export default class CanaryBuild extends BasePrereleaseNodejs {
   protected distribution = 'v8-canary';

tsconfig.json

@@ -4,12 +4,11 @@
     "module": "es2022",                       /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
     "moduleResolution": "node",               /* Specify module resolution strategy: 'node' or 'classic'. */
     "outDir": "./lib",                        /* Redirect output structure to the directory. */
-    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
     "sourceMap": true,
     "strict": true,                           /* Enable all strict type-checking options. */
     "noImplicitAny": false,                   /* Raise error on expressions and declarations with an implied 'any' type. */
     "esModuleInterop": true,                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
     "resolveJsonModule": true,                /* Allows importing modules with a '.json' extension, which is a common practice in node projects. */
   },
-  "exclude": ["__tests__", "lib", "node_modules"]
+  "exclude": ["lib", "node_modules"]
 }