diff --git a/src/editscript/diff/a_star.cljc b/src/editscript/diff/a_star.cljc
index c3b77fa..22e95cb 100644
--- a/src/editscript/diff/a_star.cljc
+++ b/src/editscript/diff/a_star.cljc
@@ -34,8 +34,10 @@
   (get-next [this] "Get the next sibling node")
   (set-next [this node] "Set the next sibling node")
   (set-order [this o] "Set the traversal order of this node")
-  (^long get-order [this] "Get the order of this node in traversal")
-  (^long get-size [this] "Get the size of sub-tree, used to estimate cost")
+  #?(:clj  (get-order ^long [this] "Get the order of this node in traversal")
+     :cljs (^number get-order [this] "Get the order of this node in traversal"))
+  #?(:clj  (get-size ^long [this] "Get the size of sub-tree, used to estimate cost")
+     :cljs (^number get-size [this] "Get the size of sub-tree, used to estimate cost"))
   (set-size [this s] "Set the size of sub-tree"))
 
 (deftype Node [^PersistentVector path