1 files changed, 2 insertions, 2 deletions
diff --git a/deps/npm/node_modules/worker-farm/lib/farm.js b/deps/npm/node_modules/worker-farm/lib/farm.js
index bdc70e84a10..c77c95d2c71 100644
--- a/deps/npm/node_modules/worker-farm/lib/farm.js
+++ b/deps/npm/node_modules/worker-farm/lib/farm.js
@@ -2,7 +2,7 @@
 
 const DEFAULT_OPTIONS = {
           maxCallsPerWorker           : Infinity
-        , maxConcurrentWorkers        : require('os').cpus().length
+        , maxConcurrentWorkers        : (require('os').cpus() || { length: 1 }).length
         , maxConcurrentCallsPerWorker : 10
         , maxConcurrentCalls          : Infinity
         , maxCallTime                 : Infinity // exceed this and the whole worker is terminated
@@ -132,7 +132,7 @@ Farm.prototype.stopChild = function (childId) {
     setTimeout(function () {
       if (child.exitCode === null)
         child.child.kill('SIGKILL')
-    }, this.options.forcedKillTime)
+    }, this.options.forcedKillTime).unref()
     ;delete this.children[childId]
     this.activeChildren--
   }