refactor(): use const and let instead of var

modules/@angular/examples/_common/e2e_util.ts

@@ -12,9 +12,9 @@ declare var expect: any;
 // TODO (juliemr): remove this method once this becomes a protractor plugin
 export function verifyNoBrowserErrors() {
   browser.manage().logs().get('browser').then(function(browserLog: any[]) {
-    var errors: any[] = [];
+    const errors: any[] = [];
     browserLog.filter(logEntry => {
-      var msg = logEntry.message;
+      const msg = logEntry.message;
       console.log('>> ' + msg);
       if (logEntry.level.value >= webdriver.logging.Level.INFO.value) {
         errors.push(msg);

modules/@angular/examples/common/pipes/ts/async_pipe.ts

@@ -59,8 +59,8 @@ export class AsyncObservablePipeComponent {
 // protractor will not see us. Also we want to have this outside the docregion so as not to confuse
 // the reader.
 function setInterval(fn: Function, delay: number) {
-  var zone = Zone.current;
-  var rootZone = zone;
+  const zone = Zone.current;
+  let rootZone = zone;
   while (rootZone.parent) {
     rootZone = rootZone.parent;
   }

modules/@angular/examples/common/pipes/ts/e2e_test/pipe_spec.ts

@@ -10,7 +10,7 @@ import {$, ExpectedConditions, browser, by, element} from 'protractor';
 import {verifyNoBrowserErrors} from '../../../../_common/e2e_util';
 
 function waitForElement(selector: string) {
-  var EC = ExpectedConditions;
+  const EC = ExpectedConditions;
   // Waits for the element with id 'abc' to be present on the dom.
   browser.wait(EC.presenceOf($(selector)), 20000);
 }
@@ -19,7 +19,7 @@ describe('pipe', () => {
   afterEach(verifyNoBrowserErrors);
 
   describe('async', () => {
-    var URL = '/common/pipes/ts/';
+    const URL = '/common/pipes/ts/';
 
     it('should resolve and display promise', () => {
       browser.get(URL);

modules/@angular/examples/compiler/ts/url_resolver/url_resolver.ts

@@ -11,7 +11,7 @@ import {NgModule} from '@angular/core';
 import {BrowserModule} from '@angular/platform-browser';
 import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
 
-var MyApp: any;
+let MyApp: any;
 
 // #docregion url_resolver
 class MyUrlResolver extends UrlResolver {

modules/@angular/examples/core/animation/ts/dsl/e2e_test/animation_example_spec.ts

@@ -10,7 +10,7 @@ import {$, ExpectedConditions, browser, by, element} from 'protractor';
 import {verifyNoBrowserErrors} from '../../../../../_common/e2e_util';
 
 function waitForElement(selector: string) {
-  var EC = ExpectedConditions;
+  const EC = ExpectedConditions;
   // Waits for the element with id 'abc' to be present on the dom.
   browser.wait(EC.presenceOf($(selector)), 20000);
 }
@@ -19,7 +19,7 @@ describe('animation example', () => {
   afterEach(verifyNoBrowserErrors);
 
   describe('index view', () => {
-    var URL = '/core/animation/ts/dsl/';
+    const URL = '/core/animation/ts/dsl/';
 
     it('should list out the current collection of items', () => {
       browser.get(URL);

modules/@angular/examples/core/debug/ts/debug_element/debug_element.ts

@@ -8,8 +8,8 @@
 
 import {DebugElement} from '@angular/core';
 
-var debugElement: DebugElement;
-var predicate: any;
+let debugElement: DebugElement;
+let predicate: any;
 
 // #docregion scope_all
 debugElement.query(predicate);

modules/@angular/examples/core/di/ts/forward_ref/forward_ref_spec.ts

@@ -12,7 +12,7 @@ export function main() {
   describe('forwardRef examples', () => {
     it('ForwardRefFn example works', () => {
       // #docregion forward_ref_fn
-      let ref = forwardRef(() => Lock);
+      const ref = forwardRef(() => Lock);
       // #enddocregion
       expect(ref).not.toBeNull();
 
@@ -32,8 +32,8 @@ export function main() {
       // Only at this point Lock is defined.
       class Lock {}
 
-      let injector = ReflectiveInjector.resolveAndCreate([Door, Lock]);
-      let door = injector.get(Door);
+      const injector = ReflectiveInjector.resolveAndCreate([Door, Lock]);
+      const door = injector.get(Door);
       expect(door instanceof Door).toBeTruthy();
       expect(door.lock instanceof Lock).toBeTruthy();
       // #enddocregion
@@ -41,7 +41,7 @@ export function main() {
 
     it('can be unwrapped', () => {
       // #docregion resolve_forward_ref
-      let ref = forwardRef(() => 'refValue');
+      const ref = forwardRef(() => 'refValue');
       expect(resolveForwardRef(ref)).toEqual('refValue');
       expect(resolveForwardRef('regularValue')).toEqual('regularValue');
       // #enddocregion

modules/@angular/examples/core/ts/platform/platform.ts

@@ -14,6 +14,6 @@ import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
 class MyApp {
 }
 
-var myPlatformFactory = createPlatformFactory(platformBrowserDynamic, 'myPlatform');
+const myPlatformFactory = createPlatformFactory(platformBrowserDynamic, 'myPlatform');
 myPlatformFactory().bootstrapModule(MyApp);
 // #enddocregion

modules/@angular/examples/facade/ts/async/observable.ts

@@ -10,8 +10,8 @@
 import {Observable} from 'rxjs/Observable';
 import {Subscriber} from 'rxjs/Subscriber';
 
-var obs = new Observable<number>((obs: Subscriber<number>) => {
-  var i = 0;
+const obs = new Observable<number>((obs: Subscriber<number>) => {
+  let i = 0;
   setInterval(() => { obs.next(++i); }, 1000);
 });
 obs.subscribe(i => console.log(`${i} seconds elapsed`));

modules/@angular/examples/facade/ts/async/observable_patched.ts

@@ -12,8 +12,8 @@ import 'rxjs/add/operator/map';
 import {Observable} from 'rxjs/Observable';
 import {Subscriber} from 'rxjs/Subscriber';
 
-var obs = new Observable<number>((obs: Subscriber<any>) => {
-  var i = 0;
+const obs = new Observable<number>((obs: Subscriber<any>) => {
+  let i = 0;
   setInterval(() => obs.next(++i), 1000);
 });
 obs.map((i: number) => `${i} seconds elapsed`).subscribe(msg => console.log(msg));

modules/@angular/examples/facade/ts/async/observable_pure.ts

@@ -11,8 +11,8 @@ import {Observable} from 'rxjs/Observable';
 import {Subscriber} from 'rxjs/Subscriber';
 import {map} from 'rxjs/operator/map';
 
-var obs = new Observable<number>((sub: Subscriber<number>) => {
-  var i = 0;
+const obs = new Observable<number>((sub: Subscriber<number>) => {
+  let i = 0;
   setInterval(() => sub.next(++i), 1000);
 });
 map.call(obs, (i: number) => `${i} seconds elapsed`).subscribe((msg: string) => console.log(msg));

modules/@angular/examples/platform-browser/dom/debug/ts/by/by.ts

@@ -9,7 +9,7 @@
 import {DebugElement} from '@angular/core';
 import {By} from '@angular/platform-browser';
 
-var debugElement: DebugElement;
+let debugElement: DebugElement;
 class MyDirective {}
 
 // #docregion by_all

modules/@angular/examples/testing/ts/fake_async.ts

@@ -12,7 +12,7 @@ import {discardPeriodicTasks, fakeAsync, tick} from '@angular/core/testing';
 // #docregion basic
 describe('this test', () => {
   it('looks async but is synchronous', <any>fakeAsync((): void => {
-       var flag = false;
+       let flag = false;
        setTimeout(() => { flag = true; }, 100);
        expect(flag).toBe(false);
        tick(50);

modules/@angular/examples/testing/ts/testing.ts

@@ -8,7 +8,7 @@
 
 import {afterEach, beforeEach, beforeEachProviders, describe, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
 
-var db: any;
+let db: any;
 class MyService {}
 class MyMockService implements MyService {}