diff --git a/lib/fs.js b/lib/fs.js
index 7bfc21c8d0..3deb3090fd 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -1367,18 +1367,14 @@ fs.unwatchFile = function(filename, listener) {
 
 // Regexp that finds the next partion of a (partial) path
 // result is [base_with_slash, base], e.g. ['somedir/', 'somedir']
-if (isWindows) {
-  var nextPartRe = /(.*?)(?:[\/\\]+|$)/g;
-} else {
-  var nextPartRe = /(.*?)(?:[\/]+|$)/g;
-}
+const nextPartRe = isWindows ?
+  /(.*?)(?:[\/\\]+|$)/g :
+  /(.*?)(?:[\/]+|$)/g;
 
 // Regex to find the device root, including trailing slash. E.g. 'c:\\'.
-if (isWindows) {
-  var splitRootRe = /^(?:[a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/][^\\\/]+)?[\\\/]*/;
-} else {
-  var splitRootRe = /^[\/]*/;
-}
+const splitRootRe = isWindows ?
+  /^(?:[a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/][^\\\/]+)?[\\\/]*/ :
+  /^[\/]*/;
 
 fs.realpathSync = function realpathSync(p, cache) {
   // make p is absolute