From 94cb3523956c5a1a0422c48e18e0d37ab3f0d5f4 Mon Sep 17 00:00:00 2001
From: Feross Aboukhadijeh <feross@feross.org>
Date: Thu, 8 Feb 2018 03:55:01 -0800
Subject: [PATCH] Ignore packages that are missing a "maintainers" field

Fixes #4
---
 cmd.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/cmd.js b/cmd.js
index 4c80061..deabf10 100755
--- a/cmd.js
+++ b/cmd.js
@@ -239,6 +239,13 @@ function computeAuthorsPkgNames (pkgs, pkgDownloads, directPkgNames) {
   const authorPkgNames = {}
 
   pkgs.forEach(pkg => {
+    if (!pkg.maintainers) {
+      // Ignore packages that are missing a "maintainers" field (e.g.
+      // http://registry.npmjs.com/vargs/latest). This appears to happen on very old
+      // packages. My guess is that the "maintainers" field only started getting
+      // added to release metadata recently.
+      return
+    }
     pkg.maintainers
       .map(maintainer => maintainer.name)
       .forEach(author => {