Fix issue #64

Author: evilaliv3

src/selectors.js

@@ -8,18 +8,11 @@ const isRootSelector = (selector = '') => !!selector.match(/:root/);
 
 const addDirToSelectors = (selectors = '', dir, options = {}) => {
   const {addPrefixToSelector, prefixType} = options;
-  // we swap direction prefixes if we are converting rtl styles to ltr
-  if (options.fromRTL) {
-    switch (dir) {
-      case 'rtl':
-        dir = 'ltr';
-        break;
-      case 'ltr':
-        dir = 'rtl';
-        break;
-      default:
-    }
+
+  if ((options.fromRTL && dir === 'rtl') || (!options.fromRTL && dir === 'ltr')) {
+    return selectors;
   }
+
   const prefix = generatePrefixes(options)[prefixType].prefixes[dir];
   if (!prefix) return selectors;