Fix.

node_modules/mkdirp/test/race.js

@@ -0,0 +1,37 @@
+var mkdirp = require('../').mkdirp;
+var path = require('path');
+var fs = require('fs');
+var exists = fs.exists || path.exists;
+var test = require('tap').test;
+var _0777 = parseInt('0777', 8);
+var _0755 = parseInt('0755', 8);
+
+test('race', function (t) {
+    t.plan(10);
+    var ps = [ '', 'tmp' ];
+    
+    for (var i = 0; i < 25; i++) {
+        var dir = Math.floor(Math.random() * Math.pow(16,4)).toString(16);
+        ps.push(dir);
+    }
+    var file = ps.join('/');
+    
+    var res = 2;
+    mk(file);
+    
+    mk(file);
+    
+    function mk (file, cb) {
+        mkdirp(file, _0755, function (err) {
+            t.ifError(err);
+            exists(file, function (ex) {
+                t.ok(ex, 'file created');
+                fs.stat(file, function (err, stat) {
+                    t.ifError(err);
+                    t.equal(stat.mode & _0777, _0755);
+                    t.ok(stat.isDirectory(), 'target not a directory');
+                });
+            })
+        });
+    }
+});