first chunk of interfaces that are valid via dart analyzer

modules/examples/src/todo/app.js

@@ -1,5 +1,6 @@
 import {DOM} from './dom';
 export class App {
+  @field('input:Element')
   constructor() {
     this.input = null;
     this.list = null;

modules/examples/src/todo/dom.dart

@@ -1,18 +0,0 @@
-library dom;
-
-import 'dart:html';
-
-class DOM {
-  static query(selector) {
-    return document.query(selector);
-  }
-  static on(element, event, callback) {
-    element.addEventListener(event, callback);
-  }
-  static getInnerHTML(el) {
-    return el.innerHtml;
-  }
-  static setInnerHTML(el, value) {
-    el.innerHtml = value;
-  }
-}

modules/examples/src/todo/dom.es6

@@ -1,14 +0,0 @@
-export class DOM {
-  static query(selector) {
-    return document.querySelector(selector);
-  }
-  static on(el, evt, listener) {
-    el.addEventListener(evt, listener, false);
-  }
-  static getInnerHTML(el) {
-    return el.innerHTML;
-  }
-  static setInnerHTML(el, value) {
-    el.innerHTML = value;
-  }
-}