From 3271bb803d337c9a70a024e54242b92e333bf261 Mon Sep 17 00:00:00 2001
From: Ben Newman <ben@meteor.com>
Date: Mon, 29 Feb 2016 15:39:24 -0500
Subject: [PATCH] Make sure file.data instanceof Buffer.

---
 tools/isobuild/import-scanner.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/isobuild/import-scanner.js b/tools/isobuild/import-scanner.js
index 112a6bf261..8eb0eefb10 100644
--- a/tools/isobuild/import-scanner.js
+++ b/tools/isobuild/import-scanner.js
@@ -103,7 +103,8 @@ export default class ImportScanner {
       const dotExt = "." + file.type;
       const dataString = file.data.toString("utf8");
       file.dataString = defaultExtensionHandlers[dotExt](dataString);
-      if (file.dataString !== dataString) {
+      if (! (file.data instanceof Buffer) ||
+          file.dataString !== dataString) {
         file.data = new Buffer(file.dataString, "utf8");
       }