refactor: add IE polyfills

Author: xidedix

src/polyfills.ts

@@ -19,26 +19,26 @@
  */
 
 /** 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';
+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';
+import 'core-js/es6/reflect';
 
 
 /** Evergreen browsers require these. **/
@@ -57,15 +57,16 @@ import 'core-js/es7/reflect';
  * user can disable parts of macroTask/DomEvents patch by setting following flags
  */
 
- // (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
+ (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
+ (window as any).__Zone_enable_cross_context_check = true;
 
  /*
  * 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_enable_cross_context_check = true;
 
 /***************************************************************************************************
  * Zone JS is required by default for Angular itself.