message: Switch to reflect-metadata.
  Vue uses that so it was including two metadata libs.
diff: @@ -4,7 +4,8 @@ import 'core-js/modules/es6.array.find';
  import 'core-js/modules/es6.array.find-index';
  import 'core-js/modules/es7.object.values';
  -import 'core-js/es7/reflect';
  +
  +import 'reflect-metadata';
  import 'angular';
  import 'angular-sanitize';
  