feat: migrate to ESM and update dependencies (#949)

* feat: migrate to ESM and update dependencies

- Migrated the project to ESM to support the latest `@actions/*` package versions.
- Updated dependencies to their latest versions, including `@actions/core`, `@actions/github`, and others.
- Replaced `.prettierrc.js` with `.prettierrc.json` for configuration.
- Updated ESLint configuration to use ESM and added new rules.
- Refactored test files to use `jest` with ESM imports.
- Removed deprecated files and updated import paths to use `.js` extensions.
- Added new files for improved configuration and removed unnecessary mocks.
- Updated README to reflect breaking changes in version 7.

* docs: update README to clarify ESM migration details and adjust TypeScript configuration

package.json

@@ -1,18 +1,19 @@
 {
   "name": "labeler",
-  "version": "6.2.0",
+  "version": "7.0.0",
   "description": "Labels pull requests by files altered",
+  "type": "module",
   "main": "lib/main.js",
   "engines": {
     "node": ">=24"
   },
   "scripts": {
     "build": "tsc && ncc build lib/main.js",
-    "format": "prettier --no-error-on-unmatched-pattern --config ./.prettierrc.js --write \"**/*.{ts,yml,yaml}\"",
-    "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"
+    "format": "prettier --no-error-on-unmatched-pattern --write \"**/*.{ts,yml,yaml}\"",
+    "format-check": "prettier --no-error-on-unmatched-pattern --check \"**/*.{ts,yml,yaml}\"",
+    "lint": "eslint \"**/*.ts\"",
+    "lint:fix": "eslint \"**/*.ts\" --fix",
+    "test": "node --experimental-vm-modules ./node_modules/jest/bin/jest.js --runInBand"
   },
   "repository": {
     "type": "git",
@@ -27,32 +28,29 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^2.0.3",
-    "@actions/github": "^6.0.1",
-    "@octokit/plugin-retry": "^6.0.0",
-    "js-yaml": "^4.2.0",
+    "@actions/core": "^3.0.1",
+    "@actions/github": "^9.1.1",
+    "@octokit/plugin-retry": "^8.1.0",
+    "js-yaml": "^5.1.0",
     "lodash.isequal": "^4.5.0",
     "minimatch": "^10.2.5"
   },
-  "overrides": {
-    "undici": "6.27.0"
-  },
   "devDependencies": {
-    "@types/jest": "^29.5.14",
-    "@types/js-yaml": "^4.0.9",
+    "@eslint/js": "^10.0.1",
+    "@jest/globals": "^30.4.1",
     "@types/lodash.isequal": "^4.5.8",
-    "@types/minimatch": "^5.1.2",
-    "@types/node": "^24.1.0",
-    "@typescript-eslint/eslint-plugin": "^8.61.1",
-    "@typescript-eslint/parser": "^8.59.0",
-    "@vercel/ncc": "^0.38.3",
-    "eslint": "^8.57.0",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-jest": "^28.11.0",
-    "eslint-plugin-node": "^11.1.0",
-    "jest": "^29.7.0",
-    "prettier": "^3.4.2",
-    "ts-jest": "^29.2.5",
-    "typescript": "^5.7.3"
+    "@types/node": "^24.13.2",
+    "@typescript-eslint/eslint-plugin": "^8.62.0",
+    "@typescript-eslint/parser": "^8.62.0",
+    "@vercel/ncc": "^0.44.0",
+    "eslint": "^10.5.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-jest": "^29.15.2",
+    "eslint-plugin-n": "^18.1.0",
+    "globals": "^17.7.0",
+    "jest": "^30.4.2",
+    "prettier": "^3.8.4",
+    "ts-jest": "^29.4.11",
+    "typescript": "^6.0.3"
   }
 }