From 9f00e3bdee4dfdb910e985ba1be78b58b1e7bd31 Mon Sep 17 00:00:00 2001
From: Artem Chivchalov <chivchalov@gmail.com>
Date: Tue, 15 Oct 2019 20:27:49 +0300
Subject: [PATCH] hotfix(runtime): bug in Store._sum

---
 src/game/store.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/game/store.js b/src/game/store.js
index ae82aef6..a3f43102 100644
--- a/src/game/store.js
+++ b/src/game/store.js
@@ -40,7 +40,9 @@ exports.make = function(_runtimeData, _intents, _register, _globals) {
                             return null;
                         }
                         if(this._sum === undefined) {
-                            this._sum = _.sum(object.store);
+                            Object.defineProperty(this, '_sum', {
+                                value: _.sum(object.store)
+                            });
                         }
                         return this._sum;
                     }