From 74aaf848edfac30a5421edc8e82b661df568111c Mon Sep 17 00:00:00 2001
From: Logan Smyth <loganfsmyth@gmail.com>
Date: Fri, 1 May 2015 17:47:58 -0700
Subject: [PATCH] Explicitly sort instead of relying on implementation-defined
 numeric key ordering - fixes #1405.

---
 .../transformers/internal/block-hoist.js             | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/babel/transformation/transformers/internal/block-hoist.js b/src/babel/transformation/transformers/internal/block-hoist.js
index 4fe3278341..b732e2b2f3 100644
--- a/src/babel/transformation/transformers/internal/block-hoist.js
+++ b/src/babel/transformation/transformers/internal/block-hoist.js
@@ -1,6 +1,4 @@
-import groupBy from "lodash/collection/groupBy";
-import flatten from "lodash/array/flatten";
-import values from "lodash/object/values";
+import sortBy from "lodash/collection/sortBy";
 
 // Priority:
 //
@@ -18,14 +16,14 @@ export var BlockStatement = {
     }
     if (!hasChange) return;
 
-    var nodePriorities = groupBy(node.body, function (bodyNode) {
+    node.body = sortBy(node.body, function(bodyNode){
       var priority = bodyNode && bodyNode._blockHoist;
       if (priority == null) priority = 1;
       if (priority === true) priority = 2;
-      return priority;
-    });
 
-    node.body = flatten(values(nodePriorities).reverse());
+      // Higher priorities should move toward the top.
+      return -1 * priority;
+    });
   }
 };