From c2e4b776368c5a4e221c9c33dfd184b036b76049 Mon Sep 17 00:00:00 2001
From: Ben Newman <ben@meteor.com>
Date: Wed, 15 Feb 2017 13:57:43 -0500
Subject: [PATCH] Protect against edge case when `resolved` is a string.

In particular, if the "main" field of the package.json file cannot be
resolved, then the `resolved` variable will be "missing", which is a
truthy value that silently rejects property assignments. Ugh!
---
 tools/isobuild/resolver.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/isobuild/resolver.js b/tools/isobuild/resolver.js
index 70e5f7703c..3737b60429 100644
--- a/tools/isobuild/resolver.js
+++ b/tools/isobuild/resolver.js
@@ -316,7 +316,7 @@ export default class Resolver {
       const resolved = this._joinAndStat(dirPath, main) ||
         this._resolve(main, pkgJsonPath, _seenDirPaths);
 
-      if (resolved) {
+      if (resolved && typeof resolved === "object") {
         if (! resolved.packageJsonMap) {
           resolved.packageJsonMap = Object.create(null);
         }