clean up js files

ionic/components/scroll/scroll.ts

@@ -0,0 +1,41 @@
+import {Component, View, ElementRef} from 'angular2/angular2';
+
+import {Ion} from '../ion';
+
+
+/**
+ * ion-scroll is a non-flexboxed scroll area that can
+ * scroll horizontally or vertically.
+ */
+@Component({
+  selector: 'ion-scroll',
+  properties: [
+    'scrollX', 'scrollY'
+  ],
+  host: {
+    '[class.scroll-x]': 'scrollX',
+    '[class.scroll-y]': 'scrollY'
+  }
+})
+@View({
+  template: `<div class="scroll-content"><content></content></div>`
+})
+export class Scroll extends Ion {
+  constructor(elementRef: ElementRef) {
+    super(elementRef);
+
+    setTimeout(() => {
+      this.scrollElement = elementRef.nativeElement.children[0];
+    });
+  }
+
+  addScrollEventListener(handler) {
+    if(!this.scrollElement) { return; }
+
+    this.scrollElement.addEventListener('scroll', handler);
+
+    return () => {
+      this.scrollElement.removeEventListener('scroll', handler);
+    }
+  }
+}