fix: package.json

Author: gb-jos

package.json

@@ -2,6 +2,13 @@
   "name": "@abraham/reflection",
   "version": "0.10.0",
   "description": "Lightweight ES Module implementation of reflect-metadata",
+  "type": "module",
+  "exports": {
+    ".": {
+      "import": "./dist/index.js",
+      "require": "./dist/index.umd.js"
+    }
+  },
   "main": "./dist/index.umd.js",
   "module": "./dist/index.js",
   "types": "./dist/index.d.ts",