Updated the files.

my-app/node_modules/rxjs/dist/esm5/internal/scheduler/Action.js

@@ -0,0 +1,15 @@
+import { __extends } from "tslib";
+import { Subscription } from '../Subscription';
+var Action = (function (_super) {
+    __extends(Action, _super);
+    function Action(scheduler, work) {
+        return _super.call(this) || this;
+    }
+    Action.prototype.schedule = function (state, delay) {
+        if (delay === void 0) { delay = 0; }
+        return this;
+    };
+    return Action;
+}(Subscription));
+export { Action };
+//# sourceMappingURL=Action.js.map