fix(component): Do not throw err when component has & binding

Closes #3099

Author: christopherthielen

src/ng1/statebuilders/views.ts

@@ -88,7 +88,7 @@ const scopeBindings = (bindingsObj: Obj) => Object.keys(bindingsObj || {})
 // [ 'input', [ '=foo', '=', 'foo' ] ]
     .map(key => [key, /^([=<@])[?]?(.*)/.exec(bindingsObj[key])])
     // skip malformed values
-    .filter(tuple => isDefined(tuple) && isDefined(tuple[1]))
+    .filter(tuple => isDefined(tuple) && isArray(tuple[1]))
     // { name: ('foo' || 'input'), type: '=' }
     .map(tuple => ({ name: tuple[1][2] || tuple[0], type: tuple[1][1] } as BindingTuple));
 

test/viewDirectiveSpec.js

@@ -832,6 +832,11 @@ describe('angular 1.5+ style .component()', function() {
         bindings: { oneway: '<?oneway', twoway: '=?', attribute: '@?attr' },
         template: '-{{ $ctrl.oneway }},{{ $ctrl.twoway }},{{ $ctrl.attribute }}-'
       });
+
+      app.component('eventComponent', {
+        bindings: { evt: '&' },
+        template: 'eventCmp',
+      });
     }
   }));
 
@@ -1057,6 +1062,18 @@ describe('angular 1.5+ style .component()', function() {
 
         expect(el.text()).toBe('-ONEWAY,TWOWAY,ATTRIBUTE-');
       });
+
+      // Test for #3099
+      it('should not throw when routing to a component with output "&" binding', function () {
+        $stateProvider.state('nothrow', {
+          component: 'eventComponent',
+        });
+
+        var $state = svcs.$state, $q = svcs.$q;
+        $state.transitionTo('nothrow'); $q.flush();
+
+        expect(el.text()).toBe('eventCmp');
+      });
     }
   });