lockfile+1.0.4.patch

diff --git a/node_modules/lockfile/lockfile.js b/node_modules/lockfile/lockfile.js
index f037bec..50c38b6 100644
--- a/node_modules/lockfile/lockfile.js
+++ b/node_modules/lockfile/lockfile.js
@@ -1,28 +1,18 @@
 var fs = require('fs')
 
 var wx = 'wx'
-if (process.version.match(/^v0\.[0-6]/)) {
-  var c = require('constants')
-  wx = c.O_TRUNC | c.O_CREAT | c.O_WRONLY | c.O_EXCL
-}
 
-var os = require('os')
 exports.filetime = 'ctime'
-if (os.platform() == "win32") {
+if (process.platform == "win32") {
   exports.filetime = 'mtime'
 }
 
 var debug
 var util = require('util')
-if (util.debuglog)
+function initDebug() {
+  if (debug) return;
   debug = util.debuglog('LOCKFILE')
-else if (/\blockfile\b/i.test(process.env.NODE_DEBUG))
-  debug = function() {
-    var msg = util.format.apply(util, arguments)
-    console.error('LOCKFILE %d %s', process.pid, msg)
-  }
-else
-  debug = function() {}
+}
 
 var locks = {}
 
@@ -30,32 +20,11 @@ function hasOwnProperty (obj, prop) {
   return Object.prototype.hasOwnProperty.call(obj, prop)
 }
 
-var onExit = require('signal-exit')
-onExit(function () {
-  debug('exit listener')
-  // cleanup
-  Object.keys(locks).forEach(exports.unlockSync)
-})
-
-// XXX https://github.com/joyent/node/issues/3555
-// Remove when node 0.8 is deprecated.
-if (/^v0\.[0-8]\./.test(process.version)) {
-  debug('uncaughtException, version = %s', process.version)
-  process.on('uncaughtException', function H (er) {
-    debug('uncaughtException')
-    var l = process.listeners('uncaughtException').filter(function (h) {
-      return h !== H
-    })
-    if (!l.length) {
-      // cleanup
-      try { Object.keys(locks).forEach(exports.unlockSync) } catch (e) {}
-      process.removeListener('uncaughtException', H)
-      throw er
-    }
-  })
-}
+// So that locks can be used in the onExit handler of unsnapshottable.js.
+exports.locks = locks
 
 exports.unlock = function (path, cb) {
+  initDebug()
   debug('unlock', path)
   // best-effort.  unlocking an already-unlocked lock is a noop
   delete locks[path]
@@ -63,6 +32,7 @@ exports.unlock = function (path, cb) {
 }
 
 exports.unlockSync = function (path) {
+  initDebug()
   debug('unlockSync', path)
   // best-effort.  unlocking an already-unlocked lock is a noop
   try { fs.unlinkSync(path) } catch (er) {}
@@ -74,6 +44,7 @@ exports.unlockSync = function (path) {
 // if the error is something other than ENOENT, then it's not.
 exports.check = function (path, opts, cb) {
   if (typeof opts === 'function') cb = opts, opts = {}
+  initDebug()
   debug('check', path, opts)
   fs.open(path, 'r', function (er, fd) {
     if (er) {
@@ -102,6 +73,7 @@ exports.check = function (path, opts, cb) {
 
 exports.checkSync = function (path, opts) {
   opts = opts || {}
+  initDebug()
   debug('checkSync', path, opts)
   if (opts.wait) {
     throw new Error('opts.wait not supported sync for obvious reasons')
@@ -137,6 +109,7 @@ var req = 1
 exports.lock = function (path, opts, cb) {
   if (typeof opts === 'function') cb = opts, opts = {}
   opts.req = opts.req || req++
+  initDebug()
   debug('lock', path, opts)
   opts.start = opts.start || Date.now()
 
@@ -201,6 +174,7 @@ exports.lock = function (path, opts, cb) {
 // 7. unlink $lock.STALE
 // On any failure, clean up whatever we've done, and raise the error.
 function maybeStale (originalEr, path, opts, hasStaleLock, cb) {
+  initDebug()
   fs.stat(path, function (statEr, st) {
     if (statEr) {
       if (statEr.code === 'ENOENT') {
@@ -239,6 +213,7 @@ function maybeStale (originalEr, path, opts, hasStaleLock, cb) {
 }
 
 function notStale (er, path, opts, cb) {
+  initDebug()
   debug('notStale', path, opts)
 
   // if we can't wait, then just call it a failure
@@ -268,6 +243,7 @@ function notStale (er, path, opts, cb) {
 exports.lockSync = function (path, opts) {
   opts = opts || {}
   opts.req = opts.req || req++
+  initDebug()
   debug('lockSync', path, opts)
   if (opts.wait || opts.retryWait) {
     throw new Error('opts.wait not supported sync for obvious reasons')
@@ -309,6 +285,7 @@ exports.lockSync = function (path, opts) {
 }
 
 function retryThrow (path, opts, er) {
+  initDebug()
   if (typeof opts.retries === 'number' && opts.retries > 0) {
     var newRT = opts.retries - 1
     debug('retryThrow', path, opts, newRT)