refactor(): use const and let instead of var

modules/benchmarks/src/tree/baseline/index.ts

@@ -10,7 +10,7 @@ import {bindAction, profile} from '../../util';
 import {buildTree, emptyTree} from '../util';
 import {TreeComponent} from './tree';
 
-var tree: TreeComponent;
+let tree: TreeComponent;
 
 function destroyDom() {
   tree.data = emptyTree;

modules/benchmarks/src/tree/incremental_dom/index.ts

@@ -12,7 +12,7 @@ import {TreeComponent} from './tree';
 const {patch} = require('incremental-dom');
 
 export function main() {
-  var tree: TreeComponent;
+  let tree: TreeComponent;
 
   function destroyDom() { tree.data = emptyTree; }
 

modules/benchmarks/src/tree/ng2_ftl/ftl_util.ts

@@ -92,7 +92,7 @@ export class FtlViewContainerRef implements ViewContainerRef {
   }
 
   get(index: number): any {
-    var result = this._firstView;
+    let result = this._firstView;
     while (index > 0 && result) {
       result = result.next;
       index--;
@@ -166,7 +166,7 @@ export class FtlViewContainerRef implements ViewContainerRef {
   }
 
   remove(index?: number): void {
-    var view: FtlView<any> = <any>this.detach(index);
+    const view: FtlView<any> = <any>this.detach(index);
     view.destroyInternal();
   }
 }

modules/benchmarks/src/tree/ng2_static/index.ts

@@ -15,8 +15,8 @@ import {buildTree, emptyTree} from '../util';
 import {AppModule, RootTreeComponent} from './tree';
 
 export function main() {
-  var tree: RootTreeComponent;
-  var appRef: ApplicationRef;
+  let tree: RootTreeComponent;
+  let appRef: ApplicationRef;
 
   function destroyDom() {
     tree.data = emptyTree;

modules/benchmarks/src/tree/ng2_static/tree.ts

@@ -37,7 +37,7 @@ export class RootTreeComponent {
 
 function createModule(): any {
   const components: any[] = [RootTreeComponent];
-  for (var i = 0; i <= maxDepth; i++) {
+  for (let i = 0; i <= maxDepth; i++) {
     components.push(createTreeComponent(i, i === maxDepth));
   }
 

modules/benchmarks/src/tree/ng2_switch/init.ts

@@ -14,8 +14,8 @@ import {buildTree, emptyTree} from '../util';
 import {AppModule, TreeComponent} from './tree';
 
 export function init(moduleRef: NgModuleRef<AppModule>) {
-  var tree: TreeComponent;
-  var appRef: ApplicationRef;
+  let tree: TreeComponent;
+  let appRef: ApplicationRef;
 
   function destroyDom() {
     tree.data = emptyTree;

modules/benchmarks/src/tree/polymer_leaves/index.ts

@@ -20,7 +20,7 @@ export function main() {
 
   function createDom() {
     const flatTree = flattenTree(buildTree(), []);
-    for (var i = 0; i < flatTree.length; i++) {
+    for (let i = 0; i < flatTree.length; i++) {
       const el: any = document.createElement('tree-leaf');
       el.data = flatTree[i];
       rootEl.appendChild(el);