fix(core): fix shorter name closure conflict

Author: JiaLiPassion

karma-dist.conf.js

@@ -12,6 +12,7 @@ module.exports = function (config) {
   config.files.push('build/test/test_fake_polyfill.js');
   config.files.push('build/test/custom_error.js');
   config.files.push('dist/zone.js');
+  config.files.push('dist/zone-patch-user-media.js');
   config.files.push('dist/async-test.js');
   config.files.push('dist/fake-async-test.js');
   config.files.push('dist/long-stack-trace-zone.js');

lib/common/utils.ts

@@ -31,11 +31,14 @@ export const p = 'object';
 export const q = 'number';
 export const r = 'string';
 
+
 // Hack since TypeScript isn't compiling this for a worker.
 declare const WorkerGlobalScope: any;
 
 export const zoneSymbol = Zone.__symbol__;
-const _global: any = typeof window === p && window || typeof self === p && self || global;
+const iw = typeof window !== o;
+const w: any = iw ? window : undefined;
+const _global: any = iw && w || typeof self === p && self || global;
 
 const REMOVE_ATTRIBUTE = 'removeAttribute';
 const NULL_ON_PROP_VALUE: any[] = [null];
@@ -95,15 +98,14 @@ export const isNode: boolean =
     (!('nw' in _global) && typeof _global.process !== o &&
      {}.toString.call(_global.process) === '[object process]');
 
-export const isBrowser: boolean =
-    !isNode && !isWebWorker && !!(typeof window !== o && (window as any)['HTMLElement']);
+export const isBrowser: boolean = !isNode && !isWebWorker && !!(iw && w['HTMLElement']);
 
 // we are in electron of nw, so we are both browser and nodejs
 // Make sure to access `process` through `_global` so that WebPack does not accidently browserify
 // this code.
 export const isMix: boolean = typeof _global.process !== o &&
     {}.toString.call(_global.process) === '[object process]' && !isWebWorker &&
-    !!(typeof window !== o && (window as any)['HTMLElement']);
+    !!(iw && w['HTMLElement']);
 
 const zoneSymbolEventNames: {[eventName: string]: string} = {};
 
@@ -430,7 +432,7 @@ export function isIEOrEdge() {
   isDetectedIEOrEdge = true;
 
   try {
-    const ua = window.navigator.userAgent;
+    const ua = w.navigator.userAgent;
     if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {
       ieOrEdge = true;
     }

test/browser/browser.spec.ts

@@ -2504,7 +2504,6 @@ describe('Zone', function() {
                const zone = Zone.current.fork({name: 'media'});
                zone.run(() => {
                  const constraints = {audio: true, video: {width: 1280, height: 720}};
-
                  navigator.getUserMedia(
                      constraints,
                      () => {

test/closure/zone.closure.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 import '../../dist/zone-node';
-
+const shortKeys = ['w', 'f', 'r', 'rg', 'rt', 'st', 'sc', 'si', 'se', 'ct'];
 const testClosureFunction = () => {
   const logs: string[] = [];
   // call all Zone exposed functions
@@ -69,7 +69,9 @@ const testClosureFunction = () => {
       logs.push('get' + keyZone.get('key'));
       logs.push('root' + Zone.root.name);
       Object.keys((Zone as any).prototype).forEach(key => {
-        logs.push(key);
+        if (shortKeys.indexOf(key) === -1) {
+          logs.push(key);
+        }
       });
       Object.keys(testZoneSpec).forEach(key => {
         logs.push(key);
@@ -139,4 +141,4 @@ process['on']('uncaughtException', (err: any) => {
   process['exit'](1);
 });
 
-testClosureFunction();
+testClosureFunction();