From 3bd8e4b6a35aa3347d9442b45947e232e1a97fd4 Mon Sep 17 00:00:00 2001
From: Minwoo Jung <minwoo@nodesource.com>
Date: Mon, 14 Jan 2019 23:02:48 +0900
Subject: [PATCH] os: add fallback for undefined CPUs

For an unsupported OS, a call to os.cpus() throws an error
within os.cpus() itself where it tries to get the length of it.
This fixes the issue by adding fallback for undefined CPUs.

Fixes: https://github.com/nodejs/node/issues/25483
PR-URL: https://github.com/nodejs/node/pull/25493
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
---
 lib/os.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/os.js b/lib/os.js
index 422ba6d0c2133b..24c9eab90d6e9e 100644
--- a/lib/os.js
+++ b/lib/os.js
@@ -89,7 +89,8 @@ function loadavg() {
 }
 
 function cpus() {
-  const data = getCPUs();
+  // [] is a bugfix for a regression introduced in 51cea61
+  const data = getCPUs() || [];
   const result = [];
   for (var i = 0; i < data.length; i += 7) {
     result.push({