From 1b516a8e748311d6cc8bc1e7002ac9916a8f65eb Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Fri, 9 Mar 2018 19:38:38 +0200
Subject: [PATCH] Resolve #622

---
 snippets/flatten.md | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/snippets/flatten.md b/snippets/flatten.md
index d39dd9467..854d27a53 100644
--- a/snippets/flatten.md
+++ b/snippets/flatten.md
@@ -9,9 +9,11 @@ Omit the second argument, `depth` to flatten only to a depth of `1` (single flat
 
 ```js
 const flatten = (arr, depth = 1) =>
-  depth !== 1
-    ? arr.reduce((a, v) => a.concat(Array.isArray(v) ? flatten(v, depth - 1) : v), [])
-    : arr.reduce((a, v) => a.concat(v), []);
+  arr.reduce(
+    (a, v) =>
+      a.concat(depth > 1 && Array.isArray(v) ? flatten(v, depth - 1) : v),
+    [],
+  );
 ```
 
 ```js