From 9bb1299fd6a3c621e7f9b673abf5de98fdc7e12a Mon Sep 17 00:00:00 2001
From: Jacob Heun <jacobheun@gmail.com>
Date: Mon, 21 May 2018 22:41:21 +0200
Subject: [PATCH 1/2] update travis build versions

---
 .travis.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index bb9ece3..110081d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,11 @@ language: node_js
 node_js:
   - 6
   - 8
+  - 10
+
+os:
+  - linux
+  - windows
 
 # Make sure we have new NPM.
 before_install:

From 4347c3c5c83eb2eafbe3ba3374bf705ffd793ece Mon Sep 17 00:00:00 2001
From: Jacob Heun <jacobheun@gmail.com>
Date: Mon, 21 May 2018 23:06:04 +0200
Subject: [PATCH 2/2] make callbacks explicit

---
 src/portable.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/portable.js b/src/portable.js
index a3bdec6..7f68544 100644
--- a/src/portable.js
+++ b/src/portable.js
@@ -20,7 +20,7 @@ module.exports = function lockPortable (name, callback) {
       }
       cb()
     }),
-    (cb) => fs.open(name, 'w+', cb),
+    (cb) => fs.open(name, 'w+', (err, fd) => cb(err, fd)),
     (fd, cb) => {
       fs.write(fd, JSON.stringify({
         ownerPID: process.pid
@@ -54,7 +54,9 @@ function processLockfile (name, callback) {
       case STATUS.LOCKED:
         return callback(new Error(`file ${name} already locked`))
       case STATUS.STALE:
-        return fs.unlink(name, callback)
+        return fs.unlink(name, (err) => {
+          callback(err)
+        })
       case STATUS.INVALID:
         return callback(new Error(`can't lock file ${name}: has invalid content`))
       default: