allow anonymous classes to be annotated

fixes #24

Author: Andrew Schmadel

ng-annotate-main.js

@@ -750,6 +750,9 @@ function judgeInjectArraySuspect(path, ctx) {
     node = path.node;
 
     if (t.isClass(node)){
+        if (!node.id) {
+            node.id = path.scope.generateUidIdentifier('ngInjectAnonymousClass');
+        }
         declaratorName = node.id.name;
         node = getConstructor(node);
     }

tests/es6.js

@@ -123,6 +123,29 @@ module.exports = {
       svc.foo = 'bar';
     `
   },
+  {
+    name: "exported anonymous class",
+    explicit: true,
+    noES5: true,
+    input: `
+      export default class {
+        constructor($timeout) {
+          'ngInject';
+          return 'foo';
+        }
+      }
+    `,
+    expected: `
+    export default class _ngInjectAnonymousClass {
+      constructor($timeout) {
+        'ngInject';
+
+        return 'foo';
+      }
+    }
+    _ngInjectAnonymousClass.$inject = ['$timeout'];
+    `
+  },
   {
     name: "annotated constructor",
     explicit: true,