build working

Author: AMontagu

package-lock.json

@@ -47,7 +47,8 @@
     "rollup-plugin-terser": "^7.0.2",
     "rollup-plugin-typescript2": "^0.30.0",
     "rollup-plugin-vue": "^6.0.0",
-    "typescript": "~3.9.3"
+    "typescript": "~3.9.3",
+    "vue": "^3.0.0"
   },
   "browserslist": [
     "> 1%",