From f6e6099718a54c3f3a68bd16f28024923b8bdf81 Mon Sep 17 00:00:00 2001
From: Jen Wei <jenwei@users.noreply.github.com>
Date: Tue, 12 May 2020 11:25:49 -0700
Subject: [PATCH] Add missing callback error handling

In queryPollDoc(), the callback for getCollectionPoll() does not have any error handling

Thus, when collection is undefined and an error is returned, we hit a TypeError when we try to call find() on collection
---
 index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.js b/index.js
index 1816a347..092abb0f 100644
--- a/index.js
+++ b/index.js
@@ -829,6 +829,7 @@ ShareDbMongo.prototype.queryPoll = function(collectionName, inputQuery, options,
 ShareDbMongo.prototype.queryPollDoc = function(collectionName, id, inputQuery, options, callback) {
   var self = this;
   self.getCollectionPoll(collectionName, function(err, collection) {
+    if (err) return callback(err);
     var parsed = self._getSafeParsedQuery(inputQuery, callback);
     if (!parsed) return;