chore(git): add missing file

src/index.js

@@ -0,0 +1,35 @@
+import {Metadata} from 'aurelia-metadata';
+import {BehaviorProperty, OptionsProperty} from './property';
+import {AttachedBehavior} from './attached-behavior';
+import {ChildObserver} from './children';
+import {CustomElement, UseShadowDOM} from './custom-element';
+import {ElementConfig} from './element-config';
+import {TemplateController} from './template-controller';
+import {UseView, NoView} from './view-strategy';
+
+export {AttachedBehavior} from './attached-behavior';
+export {BehaviorProperty, OptionsProperty} from './property';
+export {ResourceCoordinator} from './resource-coordinator';
+export {ResourceRegistry, ViewResources} from './resource-registry';
+export {ChildObserver} from './children';
+export {CustomElement, UseShadowDOM} from './custom-element';
+export {ElementConfig} from './element-config';
+export {TemplateController} from './template-controller';
+export {ViewStrategy, UseView, ConventionalView, NoView} from './view-strategy';
+export {ViewCompiler} from './view-compiler';
+export {ViewEngine} from './view-engine';
+export {ViewFactory, BoundViewFactory} from './view-factory';
+export {ViewSlot} from './view-slot';
+export {BindingLanguage} from './binding-language';
+export {CompositionEngine} from './composition-engine';
+
+Metadata.configure.classHelper('withProperty', BehaviorProperty);
+Metadata.configure.classHelper('withOptions', OptionsProperty);
+Metadata.configure.classHelper('attachedBehavior', AttachedBehavior);
+Metadata.configure.classHelper('observeChildren', ChildObserver);
+Metadata.configure.classHelper('customElement', CustomElement);
+Metadata.configure.classHelper('useShadowDOM', UseShadowDOM);
+Metadata.configure.classHelper('elementConfig', ElementConfig);
+Metadata.configure.classHelper('templateController', TemplateController);
+Metadata.configure.classHelper('useView', UseView);
+Metadata.configure.classHelper('noView', NoView);