1 files changed, 28 insertions, 30 deletions

diff --git a/lib/utils/locker.js b/lib/utils/locker.js
index 4a8f37271..9cd8b2c4f 100644
--- a/lib/utils/locker.js
+++ b/lib/utils/locker.js
@@ -1,38 +1,39 @@
-var crypto = require("crypto")
-var resolve = require("path").resolve
+var crypto = require('crypto')
+var resolve = require('path').resolve
 
-var lockfile = require("lockfile")
-var log = require("npmlog")
-var mkdirp = require("mkdirp")
+var lockfile = require('lockfile')
+var log = require('npmlog')
 
-var npm = require("../npm.js")
+var npm = require('../npm.js')
 var correctMkdir = require('../utils/correct-mkdir.js')
 
 var installLocks = {}
 
 function lockFileName (base, name) {
-  var c = name.replace(/[^a-zA-Z0-9]+/g, "-").replace(/^-+|-+$/g, "")
-    , p = resolve(base, name)
-    , h = crypto.createHash("sha1").update(p).digest("hex")
-    , l = resolve(npm.cache, "_locks")
+  var c = name.replace(/[^a-zA-Z0-9]+/g, '-').replace(/^-+|-+$/g, '')
+  var p = resolve(base, name)
+  var h = crypto.createHash('sha1').update(p).digest('hex')
+  var l = resolve(npm.cache, '_locks')
 
-  return resolve(l, c.substr(0, 24)+"-"+h.substr(0, 16)+".lock")
+  return resolve(l, c.substr(0, 24) + '-' + h.substr(0, 16) + '.lock')
 }
 
 function lock (base, name, cb) {
-  var lockDir = resolve(npm.cache, "_locks")
+  var lockDir = resolve(npm.cache, '_locks')
   correctMkdir(lockDir, function (er) {
     if (er) return cb(er)
 
-    var opts = { stale:   npm.config.get("cache-lock-stale")
-               , retries: npm.config.get("cache-lock-retries")
-               , wait:    npm.config.get("cache-lock-wait") }
+    var opts = {
+      stale: npm.config.get('cache-lock-stale'),
+      retries: npm.config.get('cache-lock-retries'),
+      wait: npm.config.get('cache-lock-wait')
+    }
     var lf = lockFileName(base, name)
     lockfile.lock(lf, opts, function (er) {
-      if (er) log.warn("locking", lf, "failed", er)
+      if (er) log.warn('locking', lf, 'failed', er)
 
       if (!er) {
-        log.verbose("lock", "using", lf, "for", resolve(base, name))
+        log.verbose('lock', 'using', lf, 'for', resolve(base, name))
         installLocks[lf] = true
       }
 
@@ -43,33 +44,30 @@ function lock (base, name, cb) {
 
 function unlock (base, name, cb) {
   var lf = lockFileName(base, name)
-    , locked = installLocks[lf]
+  var locked = installLocks[lf]
   if (locked === false) {
     return process.nextTick(cb)
-  }
-  else if (locked === true) {
+  } else if (locked === true) {
     lockfile.unlock(lf, function (er) {
       if (er) {
-        log.warn("unlocking", lf, "failed", er)
-      }
-      else {
+        log.warn('unlocking', lf, 'failed', er)
+      } else {
         installLocks[lf] = false
-        log.verbose("unlock", "done using", lf, "for", resolve(base, name))
+        log.verbose('unlock', 'done using', lf, 'for', resolve(base, name))
       }
 
       cb(er)
     })
-  }
-  else {
+  } else {
     var notLocked = new Error(
-      "Attempt to unlock " + resolve(base, name) + ", which hasn't been locked"
+      'Attempt to unlock ' + resolve(base, name) + ", which hasn't been locked"
     )
-    notLocked.code = "ENOTLOCKED"
+    notLocked.code = 'ENOTLOCKED'
     throw notLocked
   }
 }
 
 module.exports = {
-  lock   : lock,
-  unlock : unlock
+  lock: lock,
+  unlock: unlock
 }