From fa15c8d7048bf335fe170895266a962fdc43b4c6 Mon Sep 17 00:00:00 2001
From: Albert Lucianto <albertlucianto@gmail.com>
Date: Tue, 19 Feb 2019 15:57:50 +0800
Subject: [PATCH] fix: cannot read property 'split' of undefined (#225)

* fix: cannot read property 'split' of undefined

* fix: lint error in getClassName

* fix: lint error in getClassName
---
 src/getClassName.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/getClassName.js b/src/getClassName.js
index d99d858..87e29cd 100644
--- a/src/getClassName.js
+++ b/src/getClassName.js
@@ -72,6 +72,10 @@ export default (styleNameValue: string, styleModuleImportMap: StyleModuleImportM
   const handleMissingStyleName = options && options.handleMissingStyleName ||
     DEFAULT_HANDLE_MISSING_STYLENAME_OPTION;
 
+  if (!styleNameValue) {
+    return '';
+  }
+
   return styleNameValue
     .split(' ')
     .filter((styleName) => {