chore: update devDependencies to latest versions and fix output filenames in Vite config

Author: kalwalt

package-lock.json

@@ -52,16 +52,16 @@
     "webpack-dev-server": "^5.2.2"
   },
   "devDependencies": {
-    "@vitest/coverage-v8": "^4.0.5",
-    "@vitest/ui": "^4.0.5",
-    "eslint": "^9.14.0",
-    "eslint-config-prettier": "^9.1.0",
+    "@vitest/coverage-v8": "^4.0.7",
+    "@vitest/ui": "^4.0.7",
+    "eslint": "^9.39.1",
+    "eslint-config-prettier": "^9.1.2",
     "husky": "^9.1.7",
     "lint-staged": "15.4.3",
     "prettier": "^3.4.2",
     "rollup": "^4.52.5",
     "vite": "^7.1.12",
-    "vitest": "^4.0.5"
+    "vitest": "^4.0.7"
   },
   "optionalDependencies": {
     "@rollup/rollup-linux-x64-gnu": "^4.24.0"

package.json

@@ -1,8 +1,8 @@
 import { defineConfig } from 'vite';
 
 // Library build that produces:
-// - dist/arjs-core.es.js (ESM)  -> package.json "module" and "exports.import"
-// - dist/arjs-core.js (CJS)     -> package.json "main" and "exports.require"
+// - dist/arjs-core.mjs (ESM)  -> package.json "module" and "exports.import"
+// - dist/arjs-core.js (CJS)   -> package.json "main" and "exports.require"
 export default defineConfig({
   build: {
     sourcemap: true,
@@ -12,21 +12,22 @@ export default defineConfig({
       name: 'ARJSCore', // used for UMD/IIFE only; kept for completeness
     },
     rollupOptions: {
-      // Do not bundle large/peer deps. Add here as needed.
       external: [],
       output: [
         {
           format: 'es',
-          entryFileNames: 'arjs-core.es.js',
+          entryFileNames: 'arjs-core.mjs',
           exports: 'named',
           dir: 'dist',
+          sourcemap: true,
           interop: 'auto',
         },
         {
           format: 'cjs',
           entryFileNames: 'arjs-core.js',
           exports: 'named',
           dir: 'dist',
+          sourcemap: true,
           interop: 'auto',
         },
       ],