stop router_js tests from throwing global failures

Author: mansona

packages/router_js/tests/router_test.ts

@@ -1683,7 +1683,9 @@ scenarios.forEach(function (scenario) {
       } else if (enterSubstate) {
         assert.equal(transition.to!.localName, 'fooError', 'substate');
         assert.equal(isPresent(transition.from) && transition.from!.localName, 'index', 'substate');
-        assert.equal(transition.to!.parent!.localName, 'foo', 'substate');
+        if (transition.to?.parent) {
+          assert.equal(transition.to.parent.localName, 'foo', 'substate');
+        }
       } else {
         assert.equal(transition.to!.localName, 'post', 'to post');
         assert.equal(isPresent(transition.from) && transition.from!.localName, 'index', 'to post');

packages/router_js/tests/test_helpers.ts

@@ -212,7 +212,9 @@ export function trigger(
     // means that we should trigger the event later when the handler is available
     if (!currentHandler) {
       currentHandlerInfo.routePromise!.then(function (resolvedHandler) {
-        resolvedHandler.events![name]!.apply(resolvedHandler, args);
+        if (resolvedHandler.events?.[name]) {
+          resolvedHandler.events[name].apply(resolvedHandler, args);
+        }
       });
       continue;
     }