Add component detection for class expressions

Author: yannickcr

lib/util/Components.js

@@ -339,6 +339,13 @@ function componentRule(rule, context) {
 
   // Component detection instructions
   var detectionInstructions = {
+    ClassExpression: function(node) {
+      if (!utils.isES6Component(node)) {
+        return;
+      }
+      components.add(node, 2);
+    },
+
     ClassDeclaration: function(node) {
       if (!utils.isES6Component(node)) {
         return;