Export the types file

If there is an `exports` key set, Typescript requires the types file to be included in the list of the files exported.

Author: simon-tma

package.json

@@ -34,7 +34,10 @@
     ],
     "type": "module",
     "source": "./src/js/index.js",
-    "exports": "./dist/index.js",
+    "exports": {
+        "default": "./dist/index.js",
+        "types": "./src/js/index.d.ts"
+    },
     "module": "./dist/index.esm.js",
     "types": "./src/js/index.d.ts",
     "scripts": {