1 files changed, 16 insertions, 9 deletions

diff --git a/deps/npm/node_modules/mkdirp/index.js b/deps/npm/node_modules/mkdirp/index.js
index 871488f63f..874b31095a 100644
--- a/deps/npm/node_modules/mkdirp/index.js
+++ b/deps/npm/node_modules/mkdirp/index.js
@@ -3,14 +3,12 @@ var fs = require('fs');
 
 module.exports = mkdirP.mkdirp = mkdirP.mkdirP = mkdirP;
 
-function mkdirP (p, mode, f) {
+function mkdirP (p, mode, f, made) {
     if (typeof mode === 'function' || mode === undefined) {
         f = mode;
         mode = 0777 & (~process.umask());
     }
-
-    // secret passalong argument.
-    var made = arguments[3] || null;
+    if (!made) made = null;
 
     var cb = f || function () {};
     if (typeof mode === 'string') mode = parseInt(mode, 8);
@@ -29,10 +27,21 @@ function mkdirP (p, mode, f) {
                 });
                 break;
 
+            case 'EISDIR':
+            case 'EPERM':
+                // Operation not permitted or already is a dir.
+                // This is the error you get when trying to mkdir('c:/')
+                // on windows, or mkdir('/') on unix.  Make sure it's a
+                // dir by falling through to the EEXIST case.
+            case 'EROFS':
+                // a read-only file system.
+                // However, the dir could already exist, in which case
+                // the EROFS error will be obscuring a EEXIST!
+                // Fallthrough to that case.
             case 'EEXIST':
                 fs.stat(p, function (er2, stat) {
                     // if the stat fails, then that's super weird.
-                    // let the original EEXIST be the failure reason.
+                    // let the original error be the failure reason.
                     if (er2 || !stat.isDirectory()) cb(er, made)
                     else cb(null, made);
                 });
@@ -45,13 +54,11 @@ function mkdirP (p, mode, f) {
     });
 }
 
-mkdirP.sync = function sync (p, mode) {
+mkdirP.sync = function sync (p, mode, made) {
     if (mode === undefined) {
         mode = 0777 & (~process.umask());
     }
-
-    // secret passalong argument
-    var made = arguments[2] || null;
+    if (!made) made = null;
 
     if (typeof mode === 'string') mode = parseInt(mode, 8);
     p = path.resolve(p);