From 7353820456c874b308daf55853a45d53c1ae0c0e Mon Sep 17 00:00:00 2001
From: Tin <ytian0@walmartlabs.com>
Date: Tue, 9 May 2017 18:06:05 -0700
Subject: [PATCH] fix: do not return empty query for empty array

---
 encode.js     | 2 +-
 test/index.js | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/encode.js b/encode.js
index 76e4cfb..01bdd63 100644
--- a/encode.js
+++ b/encode.js
@@ -54,7 +54,7 @@ module.exports = function(obj, sep, eq, name) {
       } else {
         return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
       }
-    }).join(sep);
+    }).filter(function(q) {return q !== '';}).join(sep);
 
   }
 
diff --git a/test/index.js b/test/index.js
index 62eb2ac..9edd7eb 100644
--- a/test/index.js
+++ b/test/index.js
@@ -164,6 +164,9 @@ exports['test stringifying'] = function(assert) {
     assert.equal(testCase[1], qs.stringify(testCase[0]),
                  'stringify ' + JSON.stringify(testCase[0]));
   });
+
+  assert.equal(qs.stringify({filter:[], x:1}), 'x=1', 'stringify should not include empty array');
+  assert.equal(qs.stringify({filter:[]}), '', 'stringify should not include empty array');
 };
 
 exports['test stringifying nested'] = function(assert) {