Added a Object.prototype.propertyIsEnumerable check to __rest to prevent enumerable symbols from sneaking through.

Author: NicholasLYang

src/compiler/transformers/destructuring.ts

@@ -521,8 +521,10 @@ namespace ts {
                 for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
                     t[p] = s[p];
                 if (s != null && typeof Object.getOwnPropertySymbols === "function")
-                    for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) if (e.indexOf(p[i]) < 0)
-                        t[p[i]] = s[p[i]];
+                    for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+                        if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable(p[i]))
+                            t[p[i]] = s[p[i]];
+                    }
                 return t;
             };`
     };