update

node_modules/rxjs/_esm2015/symbol/iterator.js

@@ -0,0 +1,36 @@
+import { root } from '../util/root';
+export function symbolIteratorPonyfill(root) {
+    const Symbol = root.Symbol;
+    if (typeof Symbol === 'function') {
+        if (!Symbol.iterator) {
+            Symbol.iterator = Symbol('iterator polyfill');
+        }
+        return Symbol.iterator;
+    }
+    else {
+        // [for Mozilla Gecko 27-35:](https://mzl.la/2ewE1zC)
+        const { Set } = root;
+        if (Set && typeof new Set()['@@iterator'] === 'function') {
+            return '@@iterator';
+        }
+        const { Map } = root;
+        // required for compatability with es6-shim
+        if (Map) {
+            let keys = Object.getOwnPropertyNames(Map.prototype);
+            for (let i = 0; i < keys.length; ++i) {
+                let key = keys[i];
+                // according to spec, Map.prototype[@@iterator] and Map.orototype.entries must be equal.
+                if (key !== 'entries' && key !== 'size' && Map.prototype[key] === Map.prototype['entries']) {
+                    return key;
+                }
+            }
+        }
+        return '@@iterator';
+    }
+}
+export const iterator = symbolIteratorPonyfill(root);
+/**
+ * @deprecated use iterator instead
+ */
+export const $$iterator = iterator;
+//# sourceMappingURL=iterator.js.map