diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index e347262..0000000
--- a/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-.DS_Store*
diff --git a/debian/changelog b/debian/changelog
index a7f9991..736553b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+node-array-equal (1.0.0+git20190209.1.f9c4426-1) UNRELEASED; urgency=low
+
+  * New upstream snapshot.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Sat, 16 Apr 2022 04:10:36 -0000
+
 node-array-equal (1.0.0-4) unstable; urgency=medium
 
   * Team upload
diff --git a/index.js b/index.js
index c4b8803..e045f5e 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,13 @@
-
+/**
+ * Compare arrays
+ *
+ * @param  {Array} arr1
+ * @param  {Array} arr2
+ * @return {Boolean} - Arrays are equals
+ */
 module.exports = function equal(arr1, arr2) {
   var length = arr1.length
+  if (arr1 === arr2) return true
   if (length !== arr2.length) return false
   for (var i = 0; i < length; i++)
     if (arr1[i] !== arr2[i])