fix undefined function

fixes #14

Author: Andrew Schmadel

nginject.js

@@ -372,7 +372,8 @@ function isAnnotatedArray(node) {
     const elements = node.elements;
 
     // last should be a function expression
-    if (elements.length === 0 || !isFunctionExpressionOrArrow(last(elements))) {
+    let fn = elements.slice(-1)[0];
+    if (elements.length === 0 || !isFunctionExpressionOrArrow(fn)) {
         return false;
     }
 

tests/issues.js

@@ -187,6 +187,18 @@ module.exports = {
 
         myMod.service("a", MyCtrl);
       }
+    },
+    {
+      name: "existing array with annotation",
+      input: function(){
+        g(["a", "b", function(a, b) {
+          "ngInject"
+        }]);
+      }, expected: function(){
+        g(["a", "b", function(a, b) {
+          "ngInject"
+        }])
+      }
     }
   ]
 }