Fixed some issues with vendor-prefix-align

Author: kizu

lib/options/vendor-prefix-align.js

@@ -86,9 +86,9 @@ module.exports = {
         // TODO: Check that `node[3]` is the node we need
         if (node[0] !== 'declaration' || !node[3] || !node[3])
             return;
-        if (node[3][2][0] === 'ident')
+        if (node[3][2] && node[3][2][0] === 'ident')
             return node[3][2][1];
-        if (node[3][2][0] === 'function')
+        if (node[3][2] && node[3][2][0] === 'function')
             return node[3][2][1][1];
     },
 
@@ -236,13 +236,17 @@ module.exports = {
 
         // Gathering Info
         this._walk(node, this._getDeclName, function(info, i) {
-            var sum = node[i - 1][1].replace(/^[ \t]*\n+/, '').length + info.prefixLength;
-            getResult(node, sum, info, i);
+            if (node[i - 1]) {
+                var sum = node[i - 1][1].replace(/^[ \t]*\n+/, '').length + info.prefixLength;
+                getResult(node, sum, info, i);
+            }
         });
 
         this._walk(node, this._getValName, function(info, i) {
-            var sum = node[i][3][1][1].replace(/^[ \t]*\n+/, '').length + info.prefixLength;
-            getResult(node, sum, info, i);
+            if (node[i][3][1]) {
+                var sum = node[i][3][1][1].replace(/^[ \t]*\n+/, '').length + info.prefixLength;
+                getResult(node, sum, info, i);
+            }
         });
 
         if (result.true > 0 || result.false > 0) {

test/vendor-prefix-align.js

@@ -135,4 +135,12 @@ describe('options/vendor-prefix-align', function() {
             }
         );
     });
+
+    it('Should not detect anything in simple case', function() {
+        should_detect(
+            ['vendor-prefix-align'],
+            'a{border:0;}',
+            {}
+        );
+    });
 });