Fixed for node8!. Updated package.json libs. Thanks Keith! :)

Author: darkguy2008

package.json

@@ -24,9 +24,9 @@
   "author": "Keith Cirkel <npm@keithcirkel.co.uk> (http://keithcirkel.co.uk/)",
   "license": "MIT",
   "devDependencies": {
-    "bluebird": "^2.9.25",
-    "chai": "^2.3.0",
-    "coffee-script": "^1.9.2",
-    "mocha": "^2.2.4"
+    "bluebird": "^3.5.0",
+    "chai": "^4.0.2",
+    "coffee-script": "^1.12.6",
+    "mocha": "^3.4.2"
   }
 }

test/index.coffee

@@ -32,7 +32,7 @@ cmdWrapper = (cmd) ->
 
 spawnParallelshell = (cmd) ->
   return spawn sh, [shArg, cmdWrapper("node ./index.js "+cmd )], {
-    cwd: process.cwd
+    cwd: process.cwd()
   }
 
 killPs = (ps) ->
@@ -67,6 +67,7 @@ describe "parallelshell", ->
     Promise.all([testOutput("-h", usageInfo), testOutput("--help", usageInfo)])
     .then -> done()
     .catch done
+    return
 
   it "should close with exitCode 1 on child error", (done) ->
     ps = spawnParallelshell(failingProcess)
@@ -85,7 +86,7 @@ describe "parallelshell", ->
     setTimeout (() ->
       should.not.exist(ps.signalCode)
       killPs(ps)
-    ),50
+    ),25
 
 
   it "should close sibling processes on child error", (done) ->
@@ -105,11 +106,13 @@ describe "parallelshell", ->
       should.not.exist(ps2.signalCode)
       killPs(ps)
       killPs(ps2)
-    ),50
+    ),25
     Promise.all [new Promise((resolve) -> ps.on("close",resolve)),
       new Promise (resolve) -> ps2.on("close",resolve)]
     .then -> done()
     .catch done
+    return
+
   it "should close on CTRL+C / SIGINT", (done) ->
     ps = spawnParallelshell(["-w",waitingProcess,failingProcess,waitingProcess].join(" "))
     spyOnPs ps,2