Fix a bug with expanding function args by passing group opts properly

tests/arraylib/__snapshots__/jsfmt.spec.js.snap

@@ -94,9 +94,12 @@ function reduce_test() {
     return previousValue + currentValue + array[index];
   });
 
-  [ 0, 1, 2, 3, 4 ].reduce(function(previousValue, currentValue, index, array) {
+  [ 0, 1, 2, 3, 4 ].reduce(
+    function(previousValue, currentValue, index, array) {
       return previousValue + currentValue + array[index];
-    }, 10);
+    },
+    10
+  );
 
   var total = [ 0, 1, 2, 3 ].reduce(function(a, b) {
     return a + b;