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diff --git a/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/test/tap/correct-mkdir.js b/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/test/tap/correct-mkdir.js
new file mode 100644
index 00000000..a4f86598
--- /dev/null
+++ b/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/test/tap/correct-mkdir.js
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+var test = require('tap').test
+var assert = require('assert')
+var path = require('path')
+var requireInject = require('require-inject')
+var cache_dir = path.resolve(__dirname, 'correct-mkdir')
+
+test('correct-mkdir: no race conditions', function (t) {
+  var mock_fs = {}
+  var did_hook = false
+  mock_fs.stat = function (path, cb) {
+    if (path === cache_dir) {
+      // Return a non-matching owner
+      cb(null, {
+        uid: +process.uid + 1,
+        isDirectory: function () {
+          return true
+        }
+      })
+      if (!did_hook) {
+        did_hook = true
+        doHook()
+      }
+    } else {
+      assert.ok(false, 'Unhandled stat path: ' + path)
+    }
+  }
+  var chown_in_progress = 0
+  var mock_chownr = function (path, uid, gid, cb) {
+    ++chown_in_progress
+    process.nextTick(function () {
+      --chown_in_progress
+      cb(null)
+    })
+  }
+  var mocks = {
+    'graceful-fs': mock_fs,
+    'chownr': mock_chownr
+  }
+  var correctMkdir = requireInject('../../lib/utils/correct-mkdir.js', mocks)
+
+  var calls_in_progress = 3
+  function handleCallFinish () {
+    t.equal(chown_in_progress, 0, 'should not return while chown still in progress')
+    if (!--calls_in_progress) {
+      t.end()
+    }
+  }
+  function doHook () {
+    // This is fired during the first correctMkdir call, after the stat has finished
+    // but before the chownr has finished
+    // Buggy old code will fail and return a cached value before initial call is done
+    correctMkdir(cache_dir, handleCallFinish)
+  }
+  // Initial call
+  correctMkdir(cache_dir, handleCallFinish)
+  // Immediate call again in case of race condition there
+  correctMkdir(cache_dir, handleCallFinish)
+})
+
+test('correct-mkdir: ignore ENOENTs from chownr', function (t) {
+  var mock_fs = {}
+  mock_fs.stat = function (path, cb) {
+    if (path === cache_dir) {
+      cb(null, {
+        isDirectory: function () {
+          return true
+        }
+      })
+    } else {
+      assert.ok(false, 'Unhandled stat path: ' + path)
+    }
+  }
+  var mock_chownr = function (path, uid, gid, cb) {
+    cb({code: 'ENOENT'})
+  }
+  var mocks = {
+    'graceful-fs': mock_fs,
+    'chownr': mock_chownr
+  }
+  var correctMkdir = requireInject('../../lib/utils/correct-mkdir.js', mocks)
+
+  function handleCallFinish (err) {
+    t.ifErr(err, 'chownr\'s ENOENT errors were ignored')
+    t.end()
+  }
+  correctMkdir(cache_dir, handleCallFinish)
+})
+
+// NEED TO RUN LAST
+
+// These test checks that Windows users are protected by crashes related to
+// unexpectedly having a UID/GID other than 0 if a user happens to add these
+// variables to their environment. There are assumptions in correct-mkdir
+// that special-case Windows by checking on UID-related things.
+test('correct-mkdir: SUDO_UID and SUDO_GID non-Windows', function (t) {
+  process.env.SUDO_UID = 999
+  process.env.SUDO_GID = 999
+  process.getuid = function () { return 0 }
+  process.getgid = function () { return 0 }
+  var mock_fs = {}
+  mock_fs.stat = function (path, cb) {
+    if (path === cache_dir) {
+      cb(null, {
+        uid: 0,
+        isDirectory: function () {
+          return true
+        }
+      })
+    } else {
+      assert.ok(false, 'Unhandled stat path: ' + path)
+    }
+  }
+  var mock_chownr = function (path, uid, gid, cb) {
+    t.is(uid, +process.env.SUDO_UID, 'using the environment\'s UID')
+    t.is(gid, +process.env.SUDO_GID, 'using the environment\'s GID')
+    cb(null, {})
+  }
+  var mocks = {
+    'graceful-fs': mock_fs,
+    'chownr': mock_chownr
+  }
+  var correctMkdir = requireInject('../../lib/utils/correct-mkdir.js', mocks)
+
+  function handleCallFinish () {
+    t.end()
+  }
+  correctMkdir(cache_dir, handleCallFinish)
+})
+
+test('correct-mkdir: SUDO_UID and SUDO_GID Windows', function (t) {
+  process.env.SUDO_UID = 999
+  process.env.SUDO_GID = 999
+  delete process.getuid
+  delete process.getgid
+  var mock_fs = {}
+  mock_fs.stat = function (path, cb) {
+    if (path === cache_dir) {
+      cb(null, {
+        uid: 0,
+        isDirectory: function () {
+          return true
+        }
+      })
+    } else {
+      assert.ok(false, 'Unhandled stat path: ' + path)
+    }
+  }
+  var mock_chownr = function (path, uid, gid, cb) {
+    t.fail('chownr should not be called at all on Windows')
+    cb('nope')
+  }
+  var mocks = {
+    'graceful-fs': mock_fs,
+    'chownr': mock_chownr
+  }
+  var correctMkdir = requireInject('../../lib/utils/correct-mkdir.js', mocks)
+
+  function handleCallFinish (err) {
+    t.ifErr(err, 'chownr was not called because Windows')
+    t.end()
+  }
+  correctMkdir(cache_dir, handleCallFinish)
+})