fix space and universal removal

lib/compressor/clean/Space.js

@@ -1,16 +1,13 @@
-function canCleanWhitespace(node) {
-    if (node.type !== 'Operator') {
-        return false;
+module.exports = function cleanWhitespace(node, item, list) {
+    if (node.value === '+' || node.value === '-') {
+        return;
     }
 
-    return node.value !== '+' && node.value !== '-';
-}
-
-module.exports = function cleanWhitespace(node, item, list) {
-    var prev = item.prev && item.prev.data;
-    var next = item.next && item.next.data;
+    if (item.prev !== null && item.prev.data.type === 'Space') {
+        list.remove(item.prev);
+    }
 
-    if (canCleanWhitespace(prev) || canCleanWhitespace(next)) {
-        list.remove(item);
+    if (item.next !== null && item.next.data.type === 'Space') {
+        list.remove(item.next);
     }
 };

lib/compressor/clean/TypeSelector.js

@@ -2,13 +2,18 @@
 module.exports = function cleanType(node, item, list) {
     var name = item.data.name;
 
-    // check it's a universal selector
-    if (name.charAt(name.length - 1) !== '*') {
+    // check it's a non-namespaced universal selector
+    if (name !== '*') {
         return;
     }
 
-    // remove when universal selector isn't last or before combinator
-    if (item.next !== null && item.next.data.type !== 'Combinator') {
+    // remove when universal selector before other selectors
+    var nextType = item.next && item.next.data.type;
+    if (nextType === 'IdSelector' ||
+        nextType === 'ClassSelector' ||
+        nextType === 'AttributeSelector' ||
+        nextType === 'PseudoClassSelector' ||
+        nextType === 'PseudoElementSelector') {
         list.remove(item);
     }
 };

lib/compressor/clean/index.js

@@ -1,11 +1,11 @@
 var walk = require('css-tree').walkUp;
 var handlers = {
-    Space: require('./Space'),
     Atrule: require('./Atrule'),
     Rule: require('./Rule'),
     Declaration: require('./Declaration'),
     TypeSelector: require('./TypeSelector'),
-    Comment: require('./Comment')
+    Comment: require('./Comment'),
+    Operator: require('./Space')
 };
 
 module.exports = function(ast, usageData) {