From b192e059403f1655d8e968a406c6da2e8f6a4e7e Mon Sep 17 00:00:00 2001
From: Matteo <m.gabriele.dev@gmail.com>
Date: Mon, 10 Jun 2019 17:34:34 +0200
Subject: [PATCH] fix(helpers): querystring registers undefined or null

closes #216
---
 src/helpers.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/helpers.js b/src/helpers.js
index 7a2eae2..2a45ee4 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -87,7 +87,13 @@ export function getQueryString (queryMap) {
   const queryString = Object.keys(queryMap)
     .reduce((string, key, index, keys) => {
       const isLastKey = index === (keys.length - 1)
-      string += `${key}=${queryMap[key]}${isLastKey ? '' : '&'}`
+      const value = queryMap[key]
+
+      if (value == null) {
+        return string
+      }
+
+      string += `${key}=${value}${isLastKey ? '' : '&'}`
       return string
     }, '')