diff --git a/.idea/jsLibraryMappings.xml b/.idea/jsLibraryMappings.xml
new file mode 100644
index 00000000..114b52f2
--- /dev/null
+++ b/.idea/jsLibraryMappings.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/libraries/stack_overflow_copy_paste_node_modules.xml b/.idea/libraries/stack_overflow_copy_paste_node_modules.xml
new file mode 100644
index 00000000..6035b72a
--- /dev/null
+++ b/.idea/libraries/stack_overflow_copy_paste_node_modules.xml
@@ -0,0 +1,14 @@
+
+
+
+
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+
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+
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+ true
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+
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+ 1458812986899
+
+
+ 1458812986899
+
+
+
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\ No newline at end of file
diff --git a/src/flatten.js b/src/flatten.js
index de052030..31327e12 100644
--- a/src/flatten.js
+++ b/src/flatten.js
@@ -11,5 +11,6 @@ export default flatten
function flatten() {
return [].slice.call(arguments).reduce(function flattenReducer(flat, toFlatten) {
return flat.concat(Array.isArray(toFlatten) ? flatten.apply(null, toFlatten) : toFlatten)
+
}, [])
}