Update polyfills

Author: cagataycivici

src/polyfills.ts

@@ -11,69 +11,53 @@
  * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
  * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
  *
- * Learn more in https://angular.io/docs/ts/latest/guide/browser-support.html
+ * Learn more in https://angular.io/guide/browser-support
  */
 
 /***************************************************************************************************
  * BROWSER POLYFILLS
  */
 
-/** IE9, IE10 and IE11 requires all of the following polyfills. **/
-import 'core-js/es6/symbol';
-import 'core-js/es6/object';
-import 'core-js/es6/function';
-import 'core-js/es6/parse-int';
-import 'core-js/es6/parse-float';
-import 'core-js/es6/number';
-import 'core-js/es6/math';
-import 'core-js/es6/string';
-import 'core-js/es6/date';
-import 'core-js/es6/array';
-import 'core-js/es6/regexp';
-import 'core-js/es6/map';
-import 'core-js/es6/weak-map';
-import 'core-js/es6/set';
-
 /** IE10 and IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
-/** IE10 and IE11 requires the following for the Reflect API. */
-import 'core-js/es6/reflect';
-
-
-/** Evergreen browsers require these. **/
-// Used for reflect-metadata in JIT. If you use AOT (and only Angular decorators), you can remove.
-
-
 /**
  * Web Animations `@angular/platform-browser/animations`
  * Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
  * Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
- **/
+ */
 import 'web-animations-js';  // Run `npm install --save web-animations-js`.
 
 /**
  * By default, zone.js will patch all possible macroTask and DomEvents
  * user can disable parts of macroTask/DomEvents patch by setting following flags
+ * because those flags need to be set before `zone.js` being loaded, and webpack
+ * will put import in the top of bundle, so user need to create a separate file
+ * in this directory (for example: zone-flags.ts), and put the following flags
+ * into that file, and then add the following code before importing zone.js.
+ * import './zone-flags.ts';
+ *
+ * The flags allowed in zone-flags.ts are listed here.
+ *
+ * The following flags will work for all browsers.
+ *
+ * (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
+ * (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
+ * (window as any).__zone_symbol__UNPATCHED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
+ *
+ *  in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
+ *  with the following flag, it will bypass `zone.js` patch for IE/Edge
+ *
+ *  (window as any).__Zone_enable_cross_context_check = true;
+ *
  */
 
- // (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
- // (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
- // (window as any).__zone_symbol__BLACK_LISTED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
-
- /*
- * in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
- * with the following flag, it will bypass `zone.js` patch for IE/Edge
- */
-// (window as any).__Zone_enable_cross_context_check = true;
-
 /***************************************************************************************************
  * Zone JS is required by default for Angular itself.
  */
 import 'zone.js/dist/zone';  // Included with Angular CLI.
 
 
-
 /***************************************************************************************************
  * APPLICATION IMPORTS
  */