From c5de4164bca50e2a44d2c95374ac42e248f527c5 Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Wed, 21 Aug 2019 13:49:39 +0200
Subject: [PATCH] make sure getIndex is always async in historyKeeper

---
 historyKeeper.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/historyKeeper.js b/historyKeeper.js
index 672f63b76..e81b00f5b 100644
--- a/historyKeeper.js
+++ b/historyKeeper.js
@@ -221,7 +221,12 @@ module.exports.create = function (cfg) {
     */
     const getIndex = (ctx, channelName, cb) => {
         const chan = ctx.channels[channelName];
-        if (chan && chan.index) { return void cb(undefined, chan.index); }
+        if (chan && chan.index) {
+            // enforce async behaviour
+            return void setTimeout(function () {
+                cb(undefined, chan.index);
+            });
+        }
         computeIndex(channelName, (err, ret) => {
             if (err) { return void cb(err); }
             if (chan) { chan.index = ret; }