structure, layout and automation

node_modules/node-gyp/lib/Find-VS2017.cs

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+// Copyright 2017 - Refael Ackermann
+// Distributed under MIT style license
+// See accompanying file LICENSE at https://github.com/node4good/windows-autoconf
+
+// Usage:
+// powershell -ExecutionPolicy Unrestricted -Version "2.0" -Command "&{Add-Type -Path Find-VS2017.cs; [VisualStudioConfiguration.Main]::Query()}"
+using System;
+using System.Text;
+using System.Runtime.InteropServices;
+
+namespace VisualStudioConfiguration
+{
+    [Flags]
+    public enum InstanceState : uint
+    {
+        None = 0,
+        Local = 1,
+        Registered = 2,
+        NoRebootRequired = 4,
+        NoErrors = 8,
+        Complete = 4294967295,
+    }
+
+    [Guid("6380BCFF-41D3-4B2E-8B2E-BF8A6810C848")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface IEnumSetupInstances
+    {
+
+        void Next([MarshalAs(UnmanagedType.U4), In] int celt,
+            [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Interface), Out] ISetupInstance[] rgelt,
+            [MarshalAs(UnmanagedType.U4)] out int pceltFetched);
+
+        void Skip([MarshalAs(UnmanagedType.U4), In] int celt);
+
+        void Reset();
+
+        [return: MarshalAs(UnmanagedType.Interface)]
+        IEnumSetupInstances Clone();
+    }
+
+    [Guid("42843719-DB4C-46C2-8E7C-64F1816EFD5B")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface ISetupConfiguration
+    {
+    }
+
+    [Guid("26AAB78C-4A60-49D6-AF3B-3C35BC93365D")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface ISetupConfiguration2 : ISetupConfiguration
+    {
+
+        [return: MarshalAs(UnmanagedType.Interface)]
+        IEnumSetupInstances EnumInstances();
+
+        [return: MarshalAs(UnmanagedType.Interface)]
+        ISetupInstance GetInstanceForCurrentProcess();
+
+        [return: MarshalAs(UnmanagedType.Interface)]
+        ISetupInstance GetInstanceForPath([MarshalAs(UnmanagedType.LPWStr), In] string path);
+
+        [return: MarshalAs(UnmanagedType.Interface)]
+        IEnumSetupInstances EnumAllInstances();
+    }
+
+    [Guid("B41463C3-8866-43B5-BC33-2B0676F7F42E")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface ISetupInstance
+    {
+    }
+
+    [Guid("89143C9A-05AF-49B0-B717-72E218A2185C")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface ISetupInstance2 : ISetupInstance
+    {
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetInstanceId();
+
+        [return: MarshalAs(UnmanagedType.Struct)]
+        System.Runtime.InteropServices.ComTypes.FILETIME GetInstallDate();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetInstallationName();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetInstallationPath();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetInstallationVersion();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetDisplayName([MarshalAs(UnmanagedType.U4), In] int lcid);
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetDescription([MarshalAs(UnmanagedType.U4), In] int lcid);
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string ResolvePath([MarshalAs(UnmanagedType.LPWStr), In] string pwszRelativePath);
+
+        [return: MarshalAs(UnmanagedType.U4)]
+        InstanceState GetState();
+
+        [return: MarshalAs(UnmanagedType.SafeArray, SafeArraySubType = VarEnum.VT_UNKNOWN)]
+        ISetupPackageReference[] GetPackages();
+
+        ISetupPackageReference GetProduct();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetProductPath();
+
+        [return: MarshalAs(UnmanagedType.VariantBool)]
+        bool IsLaunchable();
+
+        [return: MarshalAs(UnmanagedType.VariantBool)]
+        bool IsComplete();
+
+        [return: MarshalAs(UnmanagedType.SafeArray, SafeArraySubType = VarEnum.VT_UNKNOWN)]
+        ISetupPropertyStore GetProperties();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetEnginePath();
+    }
+
+    [Guid("DA8D8A16-B2B6-4487-A2F1-594CCCCD6BF5")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface ISetupPackageReference
+    {
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetId();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetVersion();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetChip();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetLanguage();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetBranch();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetType();
+
+        [return: MarshalAs(UnmanagedType.BStr)]
+        string GetUniqueId();
+
+        [return: MarshalAs(UnmanagedType.VariantBool)]
+        bool GetIsExtension();
+    }
+
+    [Guid("c601c175-a3be-44bc-91f6-4568d230fc83")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    [ComImport]
+    public interface ISetupPropertyStore
+    {
+
+        [return: MarshalAs(UnmanagedType.SafeArray, SafeArraySubType = VarEnum.VT_BSTR)]
+        string[] GetNames();
+
+        object GetValue([MarshalAs(UnmanagedType.LPWStr), In] string pwszName);
+    }
+
+    [Guid("42843719-DB4C-46C2-8E7C-64F1816EFD5B")]
+    [CoClass(typeof(SetupConfigurationClass))]
+    [ComImport]
+    public interface SetupConfiguration : ISetupConfiguration2, ISetupConfiguration
+    {
+    }
+
+    [Guid("177F0C4A-1CD3-4DE7-A32C-71DBBB9FA36D")]
+    [ClassInterface(ClassInterfaceType.None)]
+    [ComImport]
+    public class SetupConfigurationClass
+    {
+    }
+
+    public static class Main
+    {
+        public static void Query()
+        {
+            ISetupConfiguration query = new SetupConfiguration();
+            ISetupConfiguration2 query2 = (ISetupConfiguration2)query;
+            IEnumSetupInstances e = query2.EnumAllInstances();
+
+            int pceltFetched;
+            ISetupInstance2[] rgelt = new ISetupInstance2[1];
+            StringBuilder log = new StringBuilder();
+            while (true)
+            {
+                e.Next(1, rgelt, out pceltFetched);
+                if (pceltFetched <= 0)
+                {
+                    Console.WriteLine(String.Format("{{\"log\":\"{0}\"}}", log.ToString()));
+                    return;
+                }
+                if (CheckInstance(rgelt[0], ref log))
+                    return;
+            }
+        }
+
+        private static bool CheckInstance(ISetupInstance2 setupInstance2, ref StringBuilder log)
+        {
+            // Visual Studio Community 2017 component directory:
+            // https://www.visualstudio.com/en-us/productinfo/vs2017-install-product-Community.workloads
+
+            string path = setupInstance2.GetInstallationPath().Replace("\\", "\\\\");
+            log.Append(String.Format("Found installation at: {0}\\n", path));
+
+            bool hasMSBuild = false;
+            bool hasVCTools = false;
+            uint Win10SDKVer = 0;
+            bool hasWin8SDK = false;
+
+            foreach (ISetupPackageReference package in setupInstance2.GetPackages())
+            {
+                const string Win10SDKPrefix = "Microsoft.VisualStudio.Component.Windows10SDK.";
+
+                string id = package.GetId();
+                if (id == "Microsoft.VisualStudio.VC.MSBuild.Base")
+                    hasMSBuild = true;
+                else if (id == "Microsoft.VisualStudio.Component.VC.Tools.x86.x64")
+                    hasVCTools = true;
+                else if (id.StartsWith(Win10SDKPrefix)) {
+                    string[] parts = id.Substring(Win10SDKPrefix.Length).Split('.');
+                    if (parts.Length > 1 && parts[1] != "Desktop")
+                        continue;
+                    uint foundSdkVer;
+                    if (UInt32.TryParse(parts[0], out foundSdkVer))
+                        Win10SDKVer = Math.Max(Win10SDKVer, foundSdkVer);
+                } else if (id == "Microsoft.VisualStudio.Component.Windows81SDK")
+                    hasWin8SDK = true;
+                else
+                    continue;
+
+                log.Append(String.Format("  - Found {0}\\n", id));
+            }
+
+            if (!hasMSBuild)
+                log.Append("  - Missing Visual Studio C++ core features (Microsoft.VisualStudio.VC.MSBuild.Base)\\n");
+            if (!hasVCTools)
+                log.Append("  - Missing VC++ 2017 v141 toolset (x86,x64) (Microsoft.VisualStudio.Component.VC.Tools.x86.x64)\\n");
+            if ((Win10SDKVer == 0) && (!hasWin8SDK))
+                log.Append("  - Missing a Windows SDK (Microsoft.VisualStudio.Component.Windows10SDK.* or Microsoft.VisualStudio.Component.Windows81SDK)\\n");
+
+            if (hasMSBuild && hasVCTools)
+            {
+                if (Win10SDKVer > 0)
+                {
+                    log.Append("  - Using this installation with Windows 10 SDK"/*\\n*/);
+                    Console.WriteLine(String.Format("{{\"log\":\"{0}\",\"path\":\"{1}\",\"sdk\":\"10.0.{2}.0\"}}", log.ToString(), path, Win10SDKVer));
+                    return true;
+                }
+                else if (hasWin8SDK)
+                {
+                    log.Append("  - Using this installation with Windows 8.1 SDK"/*\\n*/);
+                    Console.WriteLine(String.Format("{{\"log\":\"{0}\",\"path\":\"{1}\",\"sdk\":\"8.1\"}}", log.ToString(), path));
+                    return true;
+                }
+            }
+
+            log.Append("  - Some required components are missing, not using this installation\\n");
+            return false;
+        }
+    }
+}

node_modules/node-gyp/lib/build.js

@@ -0,0 +1,270 @@
+
+module.exports = exports = build
+
+/**
+ * Module dependencies.
+ */
+
+var fs = require('graceful-fs')
+  , rm = require('rimraf')
+  , path = require('path')
+  , glob = require('glob')
+  , log = require('npmlog')
+  , which = require('which')
+  , exec = require('child_process').exec
+  , processRelease = require('./process-release')
+  , win = process.platform === 'win32'
+
+exports.usage = 'Invokes `' + (win ? 'msbuild' : 'make') + '` and builds the module'
+
+function build (gyp, argv, callback) {
+  var platformMake = 'make'
+  if (process.platform === 'aix') {
+    platformMake = 'gmake'
+  } else if (process.platform.indexOf('bsd') !== -1) {
+    platformMake = 'gmake'
+  } else if (win && argv.length > 0) {
+    argv = argv.map(function(target) {
+      return '/t:' + target
+    })
+  }
+
+  var release = processRelease(argv, gyp, process.version, process.release)
+    , makeCommand = gyp.opts.make || process.env.MAKE || platformMake
+    , command = win ? 'msbuild' : makeCommand
+    , buildDir = path.resolve('build')
+    , configPath = path.resolve(buildDir, 'config.gypi')
+    , jobs = gyp.opts.jobs || process.env.JOBS
+    , buildType
+    , config
+    , arch
+    , nodeDir
+
+  loadConfigGypi()
+
+  /**
+   * Load the "config.gypi" file that was generated during "configure".
+   */
+
+  function loadConfigGypi () {
+    fs.readFile(configPath, 'utf8', function (err, data) {
+      if (err) {
+        if (err.code == 'ENOENT') {
+          callback(new Error('You must run `node-gyp configure` first!'))
+        } else {
+          callback(err)
+        }
+        return
+      }
+      config = JSON.parse(data.replace(/\#.+\n/, ''))
+
+      // get the 'arch', 'buildType', and 'nodeDir' vars from the config
+      buildType = config.target_defaults.default_configuration
+      arch = config.variables.target_arch
+      nodeDir = config.variables.nodedir
+
+      if ('debug' in gyp.opts) {
+        buildType = gyp.opts.debug ? 'Debug' : 'Release'
+      }
+      if (!buildType) {
+        buildType = 'Release'
+      }
+
+      log.verbose('build type', buildType)
+      log.verbose('architecture', arch)
+      log.verbose('node dev dir', nodeDir)
+
+      if (win) {
+        findSolutionFile()
+      } else {
+        doWhich()
+      }
+    })
+  }
+
+  /**
+   * On Windows, find the first build/*.sln file.
+   */
+
+  function findSolutionFile () {
+    glob('build/*.sln', function (err, files) {
+      if (err) return callback(err)
+      if (files.length === 0) {
+        return callback(new Error('Could not find *.sln file. Did you run "configure"?'))
+      }
+      guessedSolution = files[0]
+      log.verbose('found first Solution file', guessedSolution)
+      doWhich()
+    })
+  }
+
+  /**
+   * Uses node-which to locate the msbuild / make executable.
+   */
+
+  function doWhich () {
+    // First make sure we have the build command in the PATH
+    which(command, function (err, execPath) {
+      if (err) {
+        if (win && /not found/.test(err.message)) {
+          // On windows and no 'msbuild' found. Let's guess where it is
+          findMsbuild()
+        } else {
+          // Some other error or 'make' not found on Unix, report that to the user
+          callback(err)
+        }
+        return
+      }
+      log.verbose('`which` succeeded for `' + command + '`', execPath)
+      doBuild()
+    })
+  }
+
+  /**
+   * Search for the location of "msbuild.exe" file on Windows.
+   */
+
+  function findMsbuild () {
+    if (config.variables.msbuild_path) {
+      command = config.variables.msbuild_path
+      log.verbose('using MSBuild:', command)
+      doBuild()
+      return
+    }
+
+    log.verbose('could not find "msbuild.exe" in PATH - finding location in registry')
+    var notfoundErr = 'Can\'t find "msbuild.exe". Do you have Microsoft Visual Studio C++ 2008+ installed?'
+    var cmd = 'reg query "HKLM\\Software\\Microsoft\\MSBuild\\ToolsVersions" /s'
+    if (process.arch !== 'ia32')
+      cmd += ' /reg:32'
+    exec(cmd, function (err, stdout, stderr) {
+      if (err) {
+        return callback(new Error(err.message + '\n' + notfoundErr))
+      }
+      var reVers = /ToolsVersions\\([^\\]+)$/i
+        , rePath = /\r\n[ \t]+MSBuildToolsPath[ \t]+REG_SZ[ \t]+([^\r]+)/i
+        , msbuilds = []
+        , r
+        , msbuildPath
+      stdout.split('\r\n\r\n').forEach(function(l) {
+        if (!l) return
+        l = l.trim()
+        if (r = reVers.exec(l.substring(0, l.indexOf('\r\n')))) {
+          var ver = parseFloat(r[1], 10)
+          if (ver >= 3.5) {
+            if (r = rePath.exec(l)) {
+              msbuilds.push({
+                version: ver,
+                path: r[1]
+              })
+            }
+          }
+        }
+      })
+      msbuilds.sort(function (x, y) {
+        return (x.version < y.version ? -1 : 1)
+      })
+      ;(function verifyMsbuild () {
+        if (!msbuilds.length) return callback(new Error(notfoundErr))
+        msbuildPath = path.resolve(msbuilds.pop().path, 'msbuild.exe')
+        fs.stat(msbuildPath, function (err, stat) {
+          if (err) {
+            if (err.code == 'ENOENT') {
+              if (msbuilds.length) {
+                return verifyMsbuild()
+              } else {
+                callback(new Error(notfoundErr))
+              }
+            } else {
+              callback(err)
+            }
+            return
+          }
+          command = msbuildPath
+          doBuild()
+        })
+      })()
+    })
+  }
+
+
+  /**
+   * Actually spawn the process and compile the module.
+   */
+
+  function doBuild () {
+
+    // Enable Verbose build
+    var verbose = log.levels[log.level] <= log.levels.verbose
+    if (!win && verbose) {
+      argv.push('V=1')
+    }
+    if (win && !verbose) {
+      argv.push('/clp:Verbosity=minimal')
+    }
+
+    if (win) {
+      // Turn off the Microsoft logo on Windows
+      argv.push('/nologo')
+    }
+
+    // Specify the build type, Release by default
+    if (win) {
+      var archLower = arch.toLowerCase()
+      var p = archLower === 'x64' ? 'x64' :
+              (archLower === 'arm' ? 'ARM' : 'Win32')
+      argv.push('/p:Configuration=' + buildType + ';Platform=' + p)
+      if (jobs) {
+        var j = parseInt(jobs, 10)
+        if (!isNaN(j) && j > 0) {
+          argv.push('/m:' + j)
+        } else if (jobs.toUpperCase() === 'MAX') {
+          argv.push('/m:' + require('os').cpus().length)
+        }
+      }
+    } else {
+      argv.push('BUILDTYPE=' + buildType)
+      // Invoke the Makefile in the 'build' dir.
+      argv.push('-C')
+      argv.push('build')
+      if (jobs) {
+        var j = parseInt(jobs, 10)
+        if (!isNaN(j) && j > 0) {
+          argv.push('--jobs')
+          argv.push(j)
+        } else if (jobs.toUpperCase() === 'MAX') {
+          argv.push('--jobs')
+          argv.push(require('os').cpus().length)
+        }
+      }
+    }
+
+    if (win) {
+      // did the user specify their own .sln file?
+      var hasSln = argv.some(function (arg) {
+        return path.extname(arg) == '.sln'
+      })
+      if (!hasSln) {
+        argv.unshift(gyp.opts.solution || guessedSolution)
+      }
+    }
+
+    var proc = gyp.spawn(command, argv)
+    proc.on('exit', onExit)
+  }
+
+  /**
+   * Invoked after the make/msbuild command exits.
+   */
+
+  function onExit (code, signal) {
+    if (code !== 0) {
+      return callback(new Error('`' + command + '` failed with exit code: ' + code))
+    }
+    if (signal) {
+      return callback(new Error('`' + command + '` got signal: ' + signal))
+    }
+    callback()
+  }
+
+}

node_modules/node-gyp/lib/clean.js

@@ -0,0 +1,22 @@
+
+module.exports = exports = clean
+
+exports.usage = 'Removes any generated build files and the "out" dir'
+
+/**
+ * Module dependencies.
+ */
+
+var rm = require('rimraf')
+var log = require('npmlog')
+
+
+function clean (gyp, argv, callback) {
+
+  // Remove the 'build' dir
+  var buildDir = 'build'
+
+  log.verbose('clean', 'removing "%s" directory', buildDir)
+  rm(buildDir, callback)
+
+}

node_modules/node-gyp/lib/configure.js

@@ -0,0 +1,524 @@
+module.exports = exports = configure
+module.exports.test = {
+  PythonFinder: PythonFinder,
+  findAccessibleSync: findAccessibleSync,
+  findPython: findPython,
+}
+
+/**
+ * Module dependencies.
+ */
+
+var fs = require('graceful-fs')
+  , path = require('path')
+  , log = require('npmlog')
+  , osenv = require('osenv')
+  , which = require('which')
+  , semver = require('semver')
+  , mkdirp = require('mkdirp')
+  , cp = require('child_process')
+  , extend = require('util')._extend
+  , processRelease = require('./process-release')
+  , win = process.platform === 'win32'
+  , findNodeDirectory = require('./find-node-directory')
+  , msgFormat = require('util').format
+if (win)
+  var findVS2017 = require('./find-vs2017')
+
+exports.usage = 'Generates ' + (win ? 'MSVC project files' : 'a Makefile') + ' for the current module'
+
+function configure (gyp, argv, callback) {
+
+  var python = gyp.opts.python || process.env.PYTHON || 'python2'
+    , buildDir = path.resolve('build')
+    , configNames = [ 'config.gypi', 'common.gypi' ]
+    , configs = []
+    , nodeDir
+    , release = processRelease(argv, gyp, process.version, process.release)
+
+  findPython(python, function (err, found) {
+    if (err) {
+      callback(err)
+    } else {
+      python = found
+      getNodeDir()
+    }
+  })
+
+  function getNodeDir () {
+
+    // 'python' should be set by now
+    process.env.PYTHON = python
+
+    if (gyp.opts.nodedir) {
+      // --nodedir was specified. use that for the dev files
+      nodeDir = gyp.opts.nodedir.replace(/^~/, osenv.home())
+
+      log.verbose('get node dir', 'compiling against specified --nodedir dev files: %s', nodeDir)
+      createBuildDir()
+
+    } else {
+      // if no --nodedir specified, ensure node dependencies are installed
+      if ('v' + release.version !== process.version) {
+        // if --target was given, then determine a target version to compile for
+        log.verbose('get node dir', 'compiling against --target node version: %s', release.version)
+      } else {
+        // if no --target was specified then use the current host node version
+        log.verbose('get node dir', 'no --target version specified, falling back to host node version: %s', release.version)
+      }
+
+      if (!release.semver) {
+        // could not parse the version string with semver
+        return callback(new Error('Invalid version number: ' + release.version))
+      }
+
+      // If the tarball option is set, always remove and reinstall the headers
+      // into devdir. Otherwise only install if they're not already there.
+      gyp.opts.ensure = gyp.opts.tarball ? false : true
+
+      gyp.commands.install([ release.version ], function (err, version) {
+        if (err) return callback(err)
+        log.verbose('get node dir', 'target node version installed:', release.versionDir)
+        nodeDir = path.resolve(gyp.devDir, release.versionDir)
+        createBuildDir()
+      })
+    }
+  }
+
+  function createBuildDir () {
+    log.verbose('build dir', 'attempting to create "build" dir: %s', buildDir)
+    mkdirp(buildDir, function (err, isNew) {
+      if (err) return callback(err)
+      log.verbose('build dir', '"build" dir needed to be created?', isNew)
+      if (win && (!gyp.opts.msvs_version || gyp.opts.msvs_version === '2017')) {
+        findVS2017(function (err, vsSetup) {
+          if (err) {
+            log.verbose('Not using VS2017:', err.message)
+            createConfigFile()
+          } else {
+            createConfigFile(null, vsSetup)
+          }
+        })
+      } else {
+        createConfigFile()
+      }
+    })
+  }
+
+  function createConfigFile (err, vsSetup) {
+    if (err) return callback(err)
+
+    var configFilename = 'config.gypi'
+    var configPath = path.resolve(buildDir, configFilename)
+
+    log.verbose('build/' + configFilename, 'creating config file')
+
+    var config = process.config || {}
+      , defaults = config.target_defaults
+      , variables = config.variables
+
+    // default "config.variables"
+    if (!variables) variables = config.variables = {}
+
+    // default "config.defaults"
+    if (!defaults) defaults = config.target_defaults = {}
+
+    // don't inherit the "defaults" from node's `process.config` object.
+    // doing so could cause problems in cases where the `node` executable was
+    // compiled on a different machine (with different lib/include paths) than
+    // the machine where the addon is being built to
+    defaults.cflags = []
+    defaults.defines = []
+    defaults.include_dirs = []
+    defaults.libraries = []
+
+    // set the default_configuration prop
+    if ('debug' in gyp.opts) {
+      defaults.default_configuration = gyp.opts.debug ? 'Debug' : 'Release'
+    }
+    if (!defaults.default_configuration) {
+      defaults.default_configuration = 'Release'
+    }
+
+    // set the target_arch variable
+    variables.target_arch = gyp.opts.arch || process.arch || 'ia32'
+
+    // set the node development directory
+    variables.nodedir = nodeDir
+
+    // disable -T "thin" static archives by default
+    variables.standalone_static_library = gyp.opts.thin ? 0 : 1
+
+    if (vsSetup) {
+      // GYP doesn't (yet) have support for VS2017, so we force it to VS2015
+      // to avoid pulling a floating patch that has not landed upstream.
+      // Ref: https://chromium-review.googlesource.com/#/c/433540/
+      gyp.opts.msvs_version = '2015'
+      process.env['GYP_MSVS_VERSION'] = 2015
+      process.env['GYP_MSVS_OVERRIDE_PATH'] = vsSetup.path
+      defaults['msbuild_toolset'] = 'v141'
+      defaults['msvs_windows_target_platform_version'] = vsSetup.sdk
+      variables['msbuild_path'] = path.join(vsSetup.path, 'MSBuild', '15.0',
+                                            'Bin', 'MSBuild.exe')
+    }
+
+    // loop through the rest of the opts and add the unknown ones as variables.
+    // this allows for module-specific configure flags like:
+    //
+    //   $ node-gyp configure --shared-libxml2
+    Object.keys(gyp.opts).forEach(function (opt) {
+      if (opt === 'argv') return
+      if (opt in gyp.configDefs) return
+      variables[opt.replace(/-/g, '_')] = gyp.opts[opt]
+    })
+
+    // ensures that any boolean values from `process.config` get stringified
+    function boolsToString (k, v) {
+      if (typeof v === 'boolean')
+        return String(v)
+      return v
+    }
+
+    log.silly('build/' + configFilename, config)
+
+    // now write out the config.gypi file to the build/ dir
+    var prefix = '# Do not edit. File was generated by node-gyp\'s "configure" step'
+      , json = JSON.stringify(config, boolsToString, 2)
+    log.verbose('build/' + configFilename, 'writing out config file: %s', configPath)
+    configs.push(configPath)
+    fs.writeFile(configPath, [prefix, json, ''].join('\n'), findConfigs)
+  }
+
+  function findConfigs (err) {
+    if (err) return callback(err)
+    var name = configNames.shift()
+    if (!name) return runGyp()
+    var fullPath = path.resolve(name)
+    log.verbose(name, 'checking for gypi file: %s', fullPath)
+    fs.stat(fullPath, function (err, stat) {
+      if (err) {
+        if (err.code == 'ENOENT') {
+          findConfigs() // check next gypi filename
+        } else {
+          callback(err)
+        }
+      } else {
+        log.verbose(name, 'found gypi file')
+        configs.push(fullPath)
+        findConfigs()
+      }
+    })
+  }
+
+  function runGyp (err) {
+    if (err) return callback(err)
+
+    if (!~argv.indexOf('-f') && !~argv.indexOf('--format')) {
+      if (win) {
+        log.verbose('gyp', 'gyp format was not specified; forcing "msvs"')
+        // force the 'make' target for non-Windows
+        argv.push('-f', 'msvs')
+      } else {
+        log.verbose('gyp', 'gyp format was not specified; forcing "make"')
+        // force the 'make' target for non-Windows
+        argv.push('-f', 'make')
+      }
+    }
+
+    function hasMsvsVersion () {
+      return argv.some(function (arg) {
+        return arg.indexOf('msvs_version') === 0
+      })
+    }
+
+    if (win && !hasMsvsVersion()) {
+      if ('msvs_version' in gyp.opts) {
+        argv.push('-G', 'msvs_version=' + gyp.opts.msvs_version)
+      } else {
+        argv.push('-G', 'msvs_version=auto')
+      }
+    }
+
+    // include all the ".gypi" files that were found
+    configs.forEach(function (config) {
+      argv.push('-I', config)
+    })
+
+    // For AIX and z/OS we need to set up the path to the exports file
+    // which contains the symbols needed for linking. 
+    var node_exp_file = undefined
+    if (process.platform === 'aix' || process.platform === 'os390') {
+      var ext = process.platform === 'aix' ? 'exp' : 'x'
+      var node_root_dir = findNodeDirectory()
+      var candidates = undefined 
+      if (process.platform === 'aix') {
+        candidates = ['include/node/node',
+                      'out/Release/node',
+                      'out/Debug/node',
+                      'node'
+                     ].map(function(file) {
+                       return file + '.' + ext
+                     })
+      } else {
+        candidates = ['out/Release/obj.target/libnode',
+                      'out/Debug/obj.target/libnode',
+                      'lib/libnode'
+                     ].map(function(file) {
+                       return file + '.' + ext
+                     })
+      }
+      var logprefix = 'find exports file'
+      node_exp_file = findAccessibleSync(logprefix, node_root_dir, candidates)
+      if (node_exp_file !== undefined) {
+        log.verbose(logprefix, 'Found exports file: %s', node_exp_file)
+      } else {
+        var msg = msgFormat('Could not find node.%s file in %s', ext, node_root_dir)
+        log.error(logprefix, 'Could not find exports file')
+        return callback(new Error(msg))
+      }
+    }
+
+    // this logic ported from the old `gyp_addon` python file
+    var gyp_script = path.resolve(__dirname, '..', 'gyp', 'gyp_main.py')
+    var addon_gypi = path.resolve(__dirname, '..', 'addon.gypi')
+    var common_gypi = path.resolve(nodeDir, 'include/node/common.gypi')
+    fs.stat(common_gypi, function (err, stat) {
+      if (err)
+        common_gypi = path.resolve(nodeDir, 'common.gypi')
+
+      var output_dir = 'build'
+      if (win) {
+        // Windows expects an absolute path
+        output_dir = buildDir
+      }
+      var nodeGypDir = path.resolve(__dirname, '..')
+      var nodeLibFile = path.join(nodeDir,
+        !gyp.opts.nodedir ? '<(target_arch)' : '$(Configuration)',
+        release.name + '.lib')
+
+      argv.push('-I', addon_gypi)
+      argv.push('-I', common_gypi)
+      argv.push('-Dlibrary=shared_library')
+      argv.push('-Dvisibility=default')
+      argv.push('-Dnode_root_dir=' + nodeDir)
+      if (process.platform === 'aix' || process.platform === 'os390') {
+        argv.push('-Dnode_exp_file=' + node_exp_file)
+      }
+      argv.push('-Dnode_gyp_dir=' + nodeGypDir)
+      argv.push('-Dnode_lib_file=' + nodeLibFile)
+      argv.push('-Dmodule_root_dir=' + process.cwd())
+      argv.push('-Dnode_engine=' +
+        (gyp.opts.node_engine || process.jsEngine || 'v8'))
+      argv.push('--depth=.')
+      argv.push('--no-parallel')
+
+      // tell gyp to write the Makefile/Solution files into output_dir
+      argv.push('--generator-output', output_dir)
+
+      // tell make to write its output into the same dir
+      argv.push('-Goutput_dir=.')
+
+      // enforce use of the "binding.gyp" file
+      argv.unshift('binding.gyp')
+
+      // execute `gyp` from the current target nodedir
+      argv.unshift(gyp_script)
+
+      // make sure python uses files that came with this particular node package
+      var pypath = [path.join(__dirname, '..', 'gyp', 'pylib')]
+      if (process.env.PYTHONPATH) {
+        pypath.push(process.env.PYTHONPATH)
+      }
+      process.env.PYTHONPATH = pypath.join(win ? ';' : ':')
+
+      var cp = gyp.spawn(python, argv)
+      cp.on('exit', onCpExit)
+    })
+  }
+
+  /**
+   * Called when the `gyp` child process exits.
+   */
+
+  function onCpExit (code, signal) {
+    if (code !== 0) {
+      callback(new Error('`gyp` failed with exit code: ' + code))
+    } else {
+      // we're done
+      callback()
+    }
+  }
+
+}
+
+/**
+ * Returns the first file or directory from an array of candidates that is
+ * readable by the current user, or undefined if none of the candidates are
+ * readable.
+ */
+function findAccessibleSync (logprefix, dir, candidates) {
+  for (var next = 0; next < candidates.length; next++) {
+     var candidate = path.resolve(dir, candidates[next])
+     try {
+       var fd = fs.openSync(candidate, 'r')
+     } catch (e) {
+       // this candidate was not found or not readable, do nothing
+       log.silly(logprefix, 'Could not open %s: %s', candidate, e.message)
+       continue
+     }
+     fs.closeSync(fd)
+     log.silly(logprefix, 'Found readable %s', candidate)
+     return candidate
+  }
+
+  return undefined
+}
+
+function PythonFinder(python, callback) {
+  this.callback = callback
+  this.python = python
+}
+
+PythonFinder.prototype = {
+  checkPythonLauncherDepth: 0,
+  env: process.env,
+  execFile: cp.execFile,
+  log: log,
+  resolve: path.win32 && path.win32.resolve || path.resolve,
+  stat: fs.stat,
+  which: which,
+  win: win,
+
+  checkPython: function checkPython () {
+    this.log.verbose('check python',
+                     'checking for Python executable "%s" in the PATH',
+                     this.python)
+    this.which(this.python, function (err, execPath) {
+      if (err) {
+        this.log.verbose('`which` failed', this.python, err)
+        if (this.python === 'python2') {
+          this.python = 'python'
+          return this.checkPython()
+        }
+        if (this.win) {
+          this.checkPythonLauncher()
+        } else {
+          this.failNoPython()
+        }
+      } else {
+        this.log.verbose('`which` succeeded', this.python, execPath)
+        // Found the `python` executable, and from now on we use it explicitly.
+        // This solves #667 and #750 (`execFile` won't run batch files
+        // (*.cmd, and *.bat))
+        this.python = execPath
+        this.checkPythonVersion()
+      }
+    }.bind(this))
+  },
+
+  // Distributions of Python on Windows by default install with the "py.exe"
+  // Python launcher which is more likely to exist than the Python executable
+  // being in the $PATH.
+  // Because the Python launcher supports all versions of Python, we have to
+  // explicitly request a Python 2 version. This is done by supplying "-2" as
+  // the first command line argument. Since "py.exe -2" would be an invalid
+  // executable for "execFile", we have to use the launcher to figure out
+  // where the actual "python.exe" executable is located.
+  checkPythonLauncher: function checkPythonLauncher () {
+    this.checkPythonLauncherDepth += 1
+
+    this.log.verbose(
+        'could not find "' + this.python + '". checking python launcher')
+    var env = extend({}, this.env)
+    env.TERM = 'dumb'
+
+    var launcherArgs = ['-2', '-c', 'import sys; print sys.executable']
+    this.execFile('py.exe', launcherArgs, { env: env }, function (err, stdout) {
+      if (err) {
+        this.guessPython()
+      } else {
+        this.python = stdout.trim()
+        this.log.verbose('check python launcher',
+                         'python executable found: %j',
+                         this.python)
+        this.checkPythonVersion()
+      }
+      this.checkPythonLauncherDepth -= 1
+    }.bind(this))
+  },
+
+  checkPythonVersion: function checkPythonVersion () {
+    var args = ['-c', 'import sys; print "%s.%s.%s" % sys.version_info[:3];']
+    var env = extend({}, this.env)
+    env.TERM = 'dumb'
+
+    this.execFile(this.python, args, { env: env }, function (err, stdout) {
+      if (err) {
+        return this.callback(err)
+      }
+      this.log.verbose('check python version',
+                       '`%s -c "' + args[1] + '"` returned: %j',
+                       this.python, stdout)
+      var version = stdout.trim()
+      var range = semver.Range('>=2.5.0 <3.0.0')
+      var valid = false
+      try {
+        valid = range.test(version)
+      } catch (e) {
+        this.log.silly('range.test() error', e)
+      }
+      if (valid) {
+        this.callback(null, this.python)
+      } else if (this.win && this.checkPythonLauncherDepth === 0) {
+        this.checkPythonLauncher()
+      } else {
+        this.failPythonVersion(version)
+      }
+    }.bind(this))
+  },
+
+  failNoPython: function failNoPython () {
+    var errmsg =
+        'Can\'t find Python executable "' + this.python +
+        '", you can set the PYTHON env variable.'
+    this.callback(new Error(errmsg))
+  },
+
+  failPythonVersion: function failPythonVersion (badVersion) {
+    var errmsg =
+        'Python executable "' + this.python +
+        '" is v' + badVersion + ', which is not supported by gyp.\n' +
+        'You can pass the --python switch to point to ' +
+        'Python >= v2.5.0 & < 3.0.0.'
+    this.callback(new Error(errmsg))
+  },
+
+  // Called on Windows when "python" isn't available in the current $PATH.
+  // We are going to check if "%SystemDrive%\python27\python.exe" exists.
+  guessPython: function guessPython () {
+    this.log.verbose('could not find "' + this.python + '". guessing location')
+    var rootDir = this.env.SystemDrive || 'C:\\'
+    if (rootDir[rootDir.length - 1] !== '\\') {
+      rootDir += '\\'
+    }
+    var pythonPath = this.resolve(rootDir, 'Python27', 'python.exe')
+    this.log.verbose('ensuring that file exists:', pythonPath)
+    this.stat(pythonPath, function (err, stat) {
+      if (err) {
+        if (err.code == 'ENOENT') {
+          this.failNoPython()
+        } else {
+          this.callback(err)
+        }
+        return
+      }
+      this.python = pythonPath
+      this.checkPythonVersion()
+    }.bind(this))
+  },
+}
+
+function findPython (python, callback) {
+  var finder = new PythonFinder(python, callback)
+  finder.checkPython()
+}

node_modules/node-gyp/lib/find-node-directory.js

@@ -0,0 +1,61 @@
+var path = require('path')
+  , log = require('npmlog')
+
+function findNodeDirectory(scriptLocation, processObj) {
+  // set dirname and process if not passed in
+  // this facilitates regression tests
+  if (scriptLocation === undefined) {
+    scriptLocation = __dirname
+  }
+  if (processObj === undefined) {
+    processObj = process
+  }
+
+  // Have a look to see what is above us, to try and work out where we are
+  npm_parent_directory = path.join(scriptLocation, '../../../..')
+  log.verbose('node-gyp root', 'npm_parent_directory is '
+              + path.basename(npm_parent_directory))
+  node_root_dir = ""
+
+  log.verbose('node-gyp root', 'Finding node root directory')
+  if (path.basename(npm_parent_directory) === 'deps') {
+    // We are in a build directory where this script lives in
+    // deps/npm/node_modules/node-gyp/lib
+    node_root_dir = path.join(npm_parent_directory, '..')
+    log.verbose('node-gyp root', 'in build directory, root = '
+                + node_root_dir)
+  } else if (path.basename(npm_parent_directory) === 'node_modules') {
+    // We are in a node install directory where this script lives in
+    // lib/node_modules/npm/node_modules/node-gyp/lib or
+    // node_modules/npm/node_modules/node-gyp/lib depending on the
+    // platform
+    if (processObj.platform === 'win32') {
+      node_root_dir = path.join(npm_parent_directory, '..')
+    } else {
+      node_root_dir = path.join(npm_parent_directory, '../..')
+    }
+    log.verbose('node-gyp root', 'in install directory, root = '
+                + node_root_dir)
+  } else {
+    // We don't know where we are, try working it out from the location
+    // of the node binary
+    var node_dir = path.dirname(processObj.execPath)
+    var directory_up = path.basename(node_dir)
+    if (directory_up === 'bin') {
+      node_root_dir = path.join(node_dir, '..')
+    } else if (directory_up === 'Release' || directory_up === 'Debug') {
+      // If we are a recently built node, and the directory structure
+      // is that of a repository. If we are on Windows then we only need
+      // to go one level up, everything else, two
+      if (processObj.platform === 'win32') {
+        node_root_dir = path.join(node_dir, '..')
+      } else {
+        node_root_dir = path.join(node_dir, '../..')
+      }
+    }
+    // Else return the default blank, "".
+  }
+  return node_root_dir
+}
+
+module.exports = findNodeDirectory

node_modules/node-gyp/lib/find-vs2017.js

@@ -0,0 +1,46 @@
+var log = require('npmlog')
+  , execFile = require('child_process').execFile
+  , path = require('path')
+
+function findVS2017(callback) {
+  var ps = path.join(process.env.SystemRoot, 'System32', 'WindowsPowerShell',
+                     'v1.0', 'powershell.exe')
+  var csFile = path.join(__dirname, 'Find-VS2017.cs')
+  var psArgs = ['-ExecutionPolicy', 'Unrestricted', '-NoProfile',
+                '-Command', '&{Add-Type -Path \'' + csFile + '\';' +
+                '[VisualStudioConfiguration.Main]::Query()}']
+
+  log.silly('find vs2017', 'Running', ps, psArgs)
+  var child = execFile(ps, psArgs, { encoding: 'utf8' },
+           function (err, stdout, stderr) {
+    log.silly('find vs2017', 'PS err:', err)
+    log.silly('find vs2017', 'PS stdout:', stdout)
+    log.silly('find vs2017', 'PS stderr:', stderr)
+
+    if (err)
+      return callback(new Error('Could not use PowerShell to find VS2017'))
+
+    var vsSetup
+    try {
+      vsSetup = JSON.parse(stdout)
+    } catch (e) {
+      log.silly('find vs2017', e)
+      return callback(new Error('Could not use PowerShell to find VS2017'))
+    }
+    log.silly('find vs2017', 'vsSetup:', vsSetup)
+
+    if (vsSetup && vsSetup.log)
+      log.verbose('find vs2017', vsSetup.log.trimRight())
+
+    if (!vsSetup || !vsSetup.path || !vsSetup.sdk) {
+      return callback(new Error('No usable installation of VS2017 found'))
+    }
+
+    log.verbose('find vs2017', 'using installation:', vsSetup.path)
+    callback(null, { "path": vsSetup.path, "sdk": vsSetup.sdk })
+  })
+
+  child.stdin.end()
+}
+
+module.exports = findVS2017

node_modules/node-gyp/lib/install.js

@@ -0,0 +1,475 @@
+module.exports = exports = function (gyp, argv, callback) {
+  return install(fs, gyp, argv, callback)
+}
+
+module.exports.test = {
+  download: download,
+  install: install,
+  readCAFile: readCAFile,
+}
+
+exports.usage = 'Install node development files for the specified node version.'
+
+/**
+ * Module dependencies.
+ */
+
+var fs = require('graceful-fs')
+  , osenv = require('osenv')
+  , tar = require('tar')
+  , rm = require('rimraf')
+  , path = require('path')
+  , crypto = require('crypto')
+  , zlib = require('zlib')
+  , log = require('npmlog')
+  , semver = require('semver')
+  , fstream = require('fstream')
+  , request = require('request')
+  , mkdir = require('mkdirp')
+  , processRelease = require('./process-release')
+  , win = process.platform == 'win32'
+
+function install (fs, gyp, argv, callback) {
+
+  var release = processRelease(argv, gyp, process.version, process.release)
+
+  // ensure no double-callbacks happen
+  function cb (err) {
+    if (cb.done) return
+    cb.done = true
+    if (err) {
+      log.warn('install', 'got an error, rolling back install')
+      // roll-back the install if anything went wrong
+      gyp.commands.remove([ release.versionDir ], function (err2) {
+        callback(err)
+      })
+    } else {
+      callback(null, release.version)
+    }
+  }
+
+  // Determine which node dev files version we are installing
+  log.verbose('install', 'input version string %j', release.version)
+
+  if (!release.semver) {
+    // could not parse the version string with semver
+    return callback(new Error('Invalid version number: ' + release.version))
+  }
+
+  if (semver.lt(release.version, '0.8.0')) {
+    return callback(new Error('Minimum target version is `0.8.0` or greater. Got: ' + release.version))
+  }
+
+  // 0.x.y-pre versions are not published yet and cannot be installed. Bail.
+  if (release.semver.prerelease[0] === 'pre') {
+    log.verbose('detected "pre" node version', release.version)
+    if (gyp.opts.nodedir) {
+      log.verbose('--nodedir flag was passed; skipping install', gyp.opts.nodedir)
+      callback()
+    } else {
+      callback(new Error('"pre" versions of node cannot be installed, use the --nodedir flag instead'))
+    }
+    return
+  }
+
+  // flatten version into String
+  log.verbose('install', 'installing version: %s', release.versionDir)
+
+  // the directory where the dev files will be installed
+  var devDir = path.resolve(gyp.devDir, release.versionDir)
+
+  // If '--ensure' was passed, then don't *always* install the version;
+  // check if it is already installed, and only install when needed
+  if (gyp.opts.ensure) {
+    log.verbose('install', '--ensure was passed, so won\'t reinstall if already installed')
+    fs.stat(devDir, function (err, stat) {
+      if (err) {
+        if (err.code == 'ENOENT') {
+          log.verbose('install', 'version not already installed, continuing with install', release.version)
+          go()
+        } else if (err.code == 'EACCES') {
+          eaccesFallback(err)
+        } else {
+          cb(err)
+        }
+        return
+      }
+      log.verbose('install', 'version is already installed, need to check "installVersion"')
+      var installVersionFile = path.resolve(devDir, 'installVersion')
+      fs.readFile(installVersionFile, 'ascii', function (err, ver) {
+        if (err && err.code != 'ENOENT') {
+          return cb(err)
+        }
+        var installVersion = parseInt(ver, 10) || 0
+        log.verbose('got "installVersion"', installVersion)
+        log.verbose('needs "installVersion"', gyp.package.installVersion)
+        if (installVersion < gyp.package.installVersion) {
+          log.verbose('install', 'version is no good; reinstalling')
+          go()
+        } else {
+          log.verbose('install', 'version is good')
+          cb()
+        }
+      })
+    })
+  } else {
+    go()
+  }
+
+  function getContentSha(res, callback) {
+    var shasum = crypto.createHash('sha256')
+    res.on('data', function (chunk) {
+      shasum.update(chunk)
+    }).on('end', function () {
+      callback(null, shasum.digest('hex'))
+    })
+  }
+
+  function go () {
+
+    log.verbose('ensuring nodedir is created', devDir)
+
+    // first create the dir for the node dev files
+    mkdir(devDir, function (err, created) {
+      if (err) {
+        if (err.code == 'EACCES') {
+          eaccesFallback(err)
+        } else {
+          cb(err)
+        }
+        return
+      }
+
+      if (created) {
+        log.verbose('created nodedir', created)
+      }
+
+      // now download the node tarball
+      var tarPath = gyp.opts.tarball
+      var badDownload = false
+        , extractCount = 0
+        , gunzip = zlib.createGunzip()
+        , extracter = tar.Extract({ path: devDir, strip: 1, filter: isValid })
+
+      var contentShasums = {}
+      var expectShasums = {}
+
+      // checks if a file to be extracted from the tarball is valid.
+      // only .h header files and the gyp files get extracted
+      function isValid () {
+        var name = this.path.substring(devDir.length + 1)
+        var isValid = valid(name)
+        if (name === '' && this.type === 'Directory') {
+          // the first directory entry is ok
+          return true
+        }
+        if (isValid) {
+          log.verbose('extracted file from tarball', name)
+          extractCount++
+        } else {
+          // invalid
+          log.silly('ignoring from tarball', name)
+        }
+        return isValid
+      }
+
+      gunzip.on('error', cb)
+      extracter.on('error', cb)
+      extracter.on('end', afterTarball)
+
+      // download the tarball, gunzip and extract!
+
+      if (tarPath) {
+        var input = fs.createReadStream(tarPath)
+        input.pipe(gunzip).pipe(extracter)
+        return
+      }
+
+      try {
+        var req = download(gyp, process.env, release.tarballUrl)
+      } catch (e) {
+        return cb(e)
+      }
+
+      // something went wrong downloading the tarball?
+      req.on('error', function (err) {
+        if (err.code === 'ENOTFOUND') {
+          return cb(new Error('This is most likely not a problem with node-gyp or the package itself and\n' +
+            'is related to network connectivity. In most cases you are behind a proxy or have bad \n' +
+            'network settings.'))
+        }
+        badDownload = true
+        cb(err)
+      })
+
+      req.on('close', function () {
+        if (extractCount === 0) {
+          cb(new Error('Connection closed while downloading tarball file'))
+        }
+      })
+
+      req.on('response', function (res) {
+        if (res.statusCode !== 200) {
+          badDownload = true
+          cb(new Error(res.statusCode + ' response downloading ' + release.tarballUrl))
+          return
+        }
+        // content checksum
+        getContentSha(res, function (_, checksum) {
+          var filename = path.basename(release.tarballUrl).trim()
+          contentShasums[filename] = checksum
+          log.verbose('content checksum', filename, checksum)
+        })
+
+        // start unzipping and untaring
+        req.pipe(gunzip).pipe(extracter)
+      })
+
+      // invoked after the tarball has finished being extracted
+      function afterTarball () {
+        if (badDownload) return
+        if (extractCount === 0) {
+          return cb(new Error('There was a fatal problem while downloading/extracting the tarball'))
+        }
+        log.verbose('tarball', 'done parsing tarball')
+        var async = 0
+
+        if (win) {
+          // need to download node.lib
+          async++
+          downloadNodeLib(deref)
+        }
+
+        // write the "installVersion" file
+        async++
+        var installVersionPath = path.resolve(devDir, 'installVersion')
+        fs.writeFile(installVersionPath, gyp.package.installVersion + '\n', deref)
+
+        // Only download SHASUMS.txt if not using tarPath override
+        if (!tarPath) {
+          // download SHASUMS.txt
+          async++
+          downloadShasums(deref)
+        }
+
+        if (async === 0) {
+          // no async tasks required
+          cb()
+        }
+
+        function deref (err) {
+          if (err) return cb(err)
+
+          async--
+          if (!async) {
+            log.verbose('download contents checksum', JSON.stringify(contentShasums))
+            // check content shasums
+            for (var k in contentShasums) {
+              log.verbose('validating download checksum for ' + k, '(%s == %s)', contentShasums[k], expectShasums[k])
+              if (contentShasums[k] !== expectShasums[k]) {
+                cb(new Error(k + ' local checksum ' + contentShasums[k] + ' not match remote ' + expectShasums[k]))
+                return
+              }
+            }
+            cb()
+          }
+        }
+      }
+
+      function downloadShasums(done) {
+        log.verbose('check download content checksum, need to download `SHASUMS256.txt`...')
+        var shasumsPath = path.resolve(devDir, 'SHASUMS256.txt')
+
+        log.verbose('checksum url', release.shasumsUrl)
+        try {
+          var req = download(gyp, process.env, release.shasumsUrl)
+        } catch (e) {
+          return cb(e)
+        }
+
+        req.on('error', done)
+        req.on('response', function (res) {
+          if (res.statusCode !== 200) {
+            done(new Error(res.statusCode + ' status code downloading checksum'))
+            return
+          }
+
+          var chunks = []
+          res.on('data', function (chunk) {
+            chunks.push(chunk)
+          })
+          res.on('end', function () {
+            var lines = Buffer.concat(chunks).toString().trim().split('\n')
+            lines.forEach(function (line) {
+              var items = line.trim().split(/\s+/)
+              if (items.length !== 2) return
+
+              // 0035d18e2dcf9aad669b1c7c07319e17abfe3762  ./node-v0.11.4.tar.gz
+              var name = items[1].replace(/^\.\//, '')
+              expectShasums[name] = items[0]
+            })
+
+            log.verbose('checksum data', JSON.stringify(expectShasums))
+            done()
+          })
+        })
+      }
+
+      function downloadNodeLib (done) {
+        log.verbose('on Windows; need to download `' + release.name + '.lib`...')
+        var dir32 = path.resolve(devDir, 'ia32')
+          , dir64 = path.resolve(devDir, 'x64')
+          , libPath32 = path.resolve(dir32, release.name + '.lib')
+          , libPath64 = path.resolve(dir64, release.name + '.lib')
+
+        log.verbose('32-bit ' + release.name + '.lib dir', dir32)
+        log.verbose('64-bit ' + release.name + '.lib dir', dir64)
+        log.verbose('`' + release.name + '.lib` 32-bit url', release.libUrl32)
+        log.verbose('`' + release.name + '.lib` 64-bit url', release.libUrl64)
+
+        var async = 2
+        mkdir(dir32, function (err) {
+          if (err) return done(err)
+          log.verbose('streaming 32-bit ' + release.name + '.lib to:', libPath32)
+
+          try {
+            var req = download(gyp, process.env, release.libUrl32, cb)
+          } catch (e) {
+            return cb(e)
+          }
+
+          req.on('error', done)
+          req.on('response', function (res) {
+            if (res.statusCode !== 200) {
+              done(new Error(res.statusCode + ' status code downloading 32-bit ' + release.name + '.lib'))
+              return
+            }
+
+            getContentSha(res, function (_, checksum) {
+              contentShasums[release.libPath32] = checksum
+              log.verbose('content checksum', release.libPath32, checksum)
+            })
+
+            var ws = fs.createWriteStream(libPath32)
+            ws.on('error', cb)
+            req.pipe(ws)
+          })
+          req.on('end', function () {
+            --async || done()
+          })
+        })
+        mkdir(dir64, function (err) {
+          if (err) return done(err)
+          log.verbose('streaming 64-bit ' + release.name + '.lib to:', libPath64)
+
+          try {
+            var req = download(gyp, process.env, release.libUrl64, cb)
+          } catch (e) {
+            return cb(e)
+          }
+
+          req.on('error', done)
+          req.on('response', function (res) {
+            if (res.statusCode !== 200) {
+              done(new Error(res.statusCode + ' status code downloading 64-bit ' + release.name + '.lib'))
+              return
+            }
+
+            getContentSha(res, function (_, checksum) {
+              contentShasums[release.libPath64] = checksum
+              log.verbose('content checksum', release.libPath64, checksum)
+            })
+
+            var ws = fs.createWriteStream(libPath64)
+            ws.on('error', cb)
+            req.pipe(ws)
+          })
+          req.on('end', function () {
+            --async || done()
+          })
+        })
+      } // downloadNodeLib()
+
+    }) // mkdir()
+
+  } // go()
+
+  /**
+   * Checks if a given filename is "valid" for this installation.
+   */
+
+  function valid (file) {
+    // header files
+    var extname = path.extname(file);
+    return extname === '.h' || extname === '.gypi';
+  }
+
+  /**
+   * The EACCES fallback is a workaround for npm's `sudo` behavior, where
+   * it drops the permissions before invoking any child processes (like
+   * node-gyp). So what happens is the "nobody" user doesn't have
+   * permission to create the dev dir. As a fallback, make the tmpdir() be
+   * the dev dir for this installation. This is not ideal, but at least
+   * the compilation will succeed...
+   */
+
+  function eaccesFallback (err) {
+    var noretry = '--node_gyp_internal_noretry'
+    if (-1 !== argv.indexOf(noretry)) return cb(err)
+    var tmpdir = osenv.tmpdir()
+    gyp.devDir = path.resolve(tmpdir, '.node-gyp')
+    log.warn('EACCES', 'user "%s" does not have permission to access the dev dir "%s"', osenv.user(), devDir)
+    log.warn('EACCES', 'attempting to reinstall using temporary dev dir "%s"', gyp.devDir)
+    if (process.cwd() == tmpdir) {
+      log.verbose('tmpdir == cwd', 'automatically will remove dev files after to save disk space')
+      gyp.todo.push({ name: 'remove', args: argv })
+    }
+    gyp.commands.install([noretry].concat(argv), cb)
+  }
+
+}
+
+function download (gyp, env, url) {
+  log.http('GET', url)
+
+  var requestOpts = {
+      uri: url
+    , headers: {
+        'User-Agent': 'node-gyp v' + gyp.version + ' (node ' + process.version + ')'
+      }
+  }
+
+  var cafile = gyp.opts.cafile
+  if (cafile) {
+    requestOpts.ca = readCAFile(cafile)
+  }
+
+  // basic support for a proxy server
+  var proxyUrl = gyp.opts.proxy
+              || env.http_proxy
+              || env.HTTP_PROXY
+              || env.npm_config_proxy
+  if (proxyUrl) {
+    if (/^https?:\/\//i.test(proxyUrl)) {
+      log.verbose('download', 'using proxy url: "%s"', proxyUrl)
+      requestOpts.proxy = proxyUrl
+    } else {
+      log.warn('download', 'ignoring invalid "proxy" config setting: "%s"', proxyUrl)
+    }
+  }
+
+  var req = request(requestOpts)
+  req.on('response', function (res) {
+    log.http(res.statusCode, url)
+  })
+
+  return req
+}
+
+function readCAFile (filename) {
+  // The CA file can contain multiple certificates so split on certificate
+  // boundaries.  [\S\s]*? is used to match everything including newlines.
+  var ca = fs.readFileSync(filename, 'utf8')
+  var re = /(-----BEGIN CERTIFICATE-----[\S\s]*?-----END CERTIFICATE-----)/g
+  return ca.match(re)
+}

node_modules/node-gyp/lib/list.js

@@ -0,0 +1,33 @@
+
+module.exports = exports = list
+
+exports.usage = 'Prints a listing of the currently installed node development files'
+
+/**
+ * Module dependencies.
+ */
+
+var fs = require('graceful-fs')
+  , path = require('path')
+  , log = require('npmlog')
+
+function list (gyp, args, callback) {
+
+  var devDir = gyp.devDir
+  log.verbose('list', 'using node-gyp dir:', devDir)
+
+  // readdir() the node-gyp dir
+  fs.readdir(devDir, onreaddir)
+
+  function onreaddir (err, versions) {
+    if (err && err.code != 'ENOENT') {
+      return callback(err)
+    }
+    if (Array.isArray(versions)) {
+      versions = versions.filter(function (v) { return v != 'current' })
+    } else {
+      versions = []
+    }
+    callback(null, versions)
+  }
+}

node_modules/node-gyp/lib/node-gyp.js

@@ -0,0 +1,216 @@
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = gyp
+
+/**
+ * Module dependencies.
+ */
+
+var fs = require('graceful-fs')
+  , path = require('path')
+  , nopt = require('nopt')
+  , log = require('npmlog')
+  , child_process = require('child_process')
+  , EE = require('events').EventEmitter
+  , inherits = require('util').inherits
+  , commands = [
+      // Module build commands
+        'build'
+      , 'clean'
+      , 'configure'
+      , 'rebuild'
+      // Development Header File management commands
+      , 'install'
+      , 'list'
+      , 'remove'
+    ]
+  , aliases = {
+        'ls': 'list'
+      , 'rm': 'remove'
+    }
+
+// differentiate node-gyp's logs from npm's
+log.heading = 'gyp'
+
+/**
+ * The `gyp` function.
+ */
+
+function gyp () {
+  return new Gyp()
+}
+
+function Gyp () {
+  var self = this
+
+  this.devDir = ''
+  this.commands = {}
+
+  commands.forEach(function (command) {
+    self.commands[command] = function (argv, callback) {
+      log.verbose('command', command, argv)
+      return require('./' + command)(self, argv, callback)
+    }
+  })
+}
+inherits(Gyp, EE)
+exports.Gyp = Gyp
+var proto = Gyp.prototype
+
+/**
+ * Export the contents of the package.json.
+ */
+
+proto.package = require('../package')
+
+/**
+ * nopt configuration definitions
+ */
+
+proto.configDefs = {
+    help: Boolean     // everywhere
+  , arch: String      // 'configure'
+  , cafile: String    // 'install'
+  , debug: Boolean    // 'build'
+  , directory: String // bin
+  , make: String      // 'build'
+  , msvs_version: String // 'configure'
+  , ensure: Boolean   // 'install'
+  , solution: String  // 'build' (windows only)
+  , proxy: String     // 'install'
+  , devdir: String   // everywhere
+  , nodedir: String   // 'configure'
+  , loglevel: String  // everywhere
+  , python: String    // 'configure'
+  , 'dist-url': String // 'install'
+  , 'tarball': String // 'install'
+  , jobs: String      // 'build'
+  , thin: String      // 'configure'
+}
+
+/**
+ * nopt shorthands
+ */
+
+proto.shorthands = {
+    release: '--no-debug'
+  , C: '--directory'
+  , debug: '--debug'
+  , j: '--jobs'
+  , silly: '--loglevel=silly'
+  , verbose: '--loglevel=verbose'
+  , silent: '--loglevel=silent'
+}
+
+/**
+ * expose the command aliases for the bin file to use.
+ */
+
+proto.aliases = aliases
+
+/**
+ * Parses the given argv array and sets the 'opts',
+ * 'argv' and 'command' properties.
+ */
+
+proto.parseArgv = function parseOpts (argv) {
+  this.opts = nopt(this.configDefs, this.shorthands, argv)
+  this.argv = this.opts.argv.remain.slice()
+
+  var commands = this.todo = []
+
+  // create a copy of the argv array with aliases mapped
+  argv = this.argv.map(function (arg) {
+    // is this an alias?
+    if (arg in this.aliases) {
+      arg = this.aliases[arg]
+    }
+    return arg
+  }, this)
+
+  // process the mapped args into "command" objects ("name" and "args" props)
+  argv.slice().forEach(function (arg) {
+    if (arg in this.commands) {
+      var args = argv.splice(0, argv.indexOf(arg))
+      argv.shift()
+      if (commands.length > 0) {
+        commands[commands.length - 1].args = args
+      }
+      commands.push({ name: arg, args: [] })
+    }
+  }, this)
+  if (commands.length > 0) {
+    commands[commands.length - 1].args = argv.splice(0)
+  }
+
+  // support for inheriting config env variables from npm
+  var npm_config_prefix = 'npm_config_'
+  Object.keys(process.env).forEach(function (name) {
+    if (name.indexOf(npm_config_prefix) !== 0) return
+    var val = process.env[name]
+    if (name === npm_config_prefix + 'loglevel') {
+      log.level = val
+    } else {
+      // add the user-defined options to the config
+      name = name.substring(npm_config_prefix.length)
+      // gyp@741b7f1 enters an infinite loop when it encounters
+      // zero-length options so ensure those don't get through.
+      if (name) this.opts[name] = val
+    }
+  }, this)
+
+  if (this.opts.loglevel) {
+    log.level = this.opts.loglevel
+  }
+  log.resume()
+}
+
+/**
+ * Spawns a child process and emits a 'spawn' event.
+ */
+
+proto.spawn = function spawn (command, args, opts) {
+  if (!opts) opts = {}
+  if (!opts.silent && !opts.stdio) {
+    opts.stdio = [ 0, 1, 2 ]
+  }
+  var cp = child_process.spawn(command, args, opts)
+  log.info('spawn', command)
+  log.info('spawn args', args)
+  return cp
+}
+
+/**
+ * Returns the usage instructions for node-gyp.
+ */
+
+proto.usage = function usage () {
+  var str = [
+      ''
+    , '  Usage: node-gyp <command> [options]'
+    , ''
+    , '  where <command> is one of:'
+    , commands.map(function (c) {
+        return '    - ' + c + ' - ' + require('./' + c).usage
+      }).join('\n')
+    , ''
+    , 'node-gyp@' + this.version + '  ' + path.resolve(__dirname, '..')
+    , 'node@' + process.versions.node
+  ].join('\n')
+  return str
+}
+
+/**
+ * Version number getter.
+ */
+
+Object.defineProperty(proto, 'version', {
+    get: function () {
+      return this.package.version
+    }
+  , enumerable: true
+})
+

node_modules/node-gyp/lib/process-release.js

@@ -0,0 +1,155 @@
+var semver = require('semver')
+  , url = require('url')
+  , path = require('path')
+  , log = require('npmlog')
+
+    // versions where -headers.tar.gz started shipping
+  , headersTarballRange = '>= 3.0.0 || ~0.12.10 || ~0.10.42'
+  , bitsre = /\/win-(x86|x64)\//
+  , bitsreV3 = /\/win-(x86|ia32|x64)\// // io.js v3.x.x shipped with "ia32" but should
+                                        // have been "x86"
+
+// Captures all the logic required to determine download URLs, local directory and 
+// file names. Inputs come from command-line switches (--target, --dist-url),
+// `process.version` and `process.release` where it exists.
+function processRelease (argv, gyp, defaultVersion, defaultRelease) {
+  var version = (semver.valid(argv[0]) && argv[0]) || gyp.opts.target || defaultVersion
+    , versionSemver = semver.parse(version)
+    , overrideDistUrl = gyp.opts['dist-url'] || gyp.opts.disturl
+    , isDefaultVersion
+    , isIojs
+    , name
+    , distBaseUrl
+    , baseUrl
+    , libUrl32
+    , libUrl64
+    , tarballUrl
+    , canGetHeaders
+
+  if (!versionSemver) {
+    // not a valid semver string, nothing we can do
+    return { version: version }
+  }
+  // flatten version into String
+  version = versionSemver.version
+
+  // defaultVersion should come from process.version so ought to be valid semver
+  isDefaultVersion = version === semver.parse(defaultVersion).version
+
+  // can't use process.release if we're using --target=x.y.z
+  if (!isDefaultVersion)
+    defaultRelease = null
+
+  if (defaultRelease) {
+    // v3 onward, has process.release
+    name = defaultRelease.name.replace(/io\.js/, 'iojs') // remove the '.' for directory naming purposes
+    isIojs = name === 'iojs'
+  } else {
+    // old node or alternative --target=
+    // semver.satisfies() doesn't like prerelease tags so test major directly
+    isIojs = versionSemver.major >= 1 && versionSemver.major < 4
+    name = isIojs ? 'iojs' : 'node'
+  }
+
+  // check for the nvm.sh standard mirror env variables
+  if (!overrideDistUrl) {
+    if (isIojs) {
+      if (process.env.IOJS_ORG_MIRROR) {
+        overrideDistUrl = process.env.IOJS_ORG_MIRROR
+      } else if (process.env.NVM_IOJS_ORG_MIRROR) {// remove on next semver-major
+        overrideDistUrl = process.env.NVM_IOJS_ORG_MIRROR
+        log.warn('download',
+            'NVM_IOJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, ' +
+            'please use IOJS_ORG_MIRROR')
+      }
+    } else {
+      if (process.env.NODEJS_ORG_MIRROR) {
+        overrideDistUrl = process.env.NODEJS_ORG_MIRROR
+      } else if (process.env.NVM_NODEJS_ORG_MIRROR) {// remove on next semver-major
+        overrideDistUrl = process.env.NVM_NODEJS_ORG_MIRROR
+        log.warn('download',
+            'NVM_NODEJS_ORG_MIRROR is deprecated and will be removed in node-gyp v4, ' +
+            'please use NODEJS_ORG_MIRROR')
+      }
+    }
+  }
+
+  if (overrideDistUrl)
+    log.verbose('download', 'using dist-url', overrideDistUrl)
+
+  if (overrideDistUrl)
+    distBaseUrl = overrideDistUrl.replace(/\/+$/, '')
+  else
+    distBaseUrl = isIojs ? 'https://iojs.org/download/release' : 'https://nodejs.org/dist'
+  distBaseUrl += '/v' + version + '/'
+
+  // new style, based on process.release so we have a lot of the data we need
+  if (defaultRelease && defaultRelease.headersUrl && !overrideDistUrl) {
+    baseUrl = url.resolve(defaultRelease.headersUrl, './')
+    libUrl32 = resolveLibUrl(name, defaultRelease.libUrl || baseUrl || distBaseUrl, 'x86', versionSemver.major)
+    libUrl64 = resolveLibUrl(name, defaultRelease.libUrl || baseUrl || distBaseUrl, 'x64', versionSemver.major)
+
+    return {
+      version: version,
+      semver: versionSemver,
+      name: name,
+      baseUrl: baseUrl,
+      tarballUrl: defaultRelease.headersUrl,
+      shasumsUrl: url.resolve(baseUrl, 'SHASUMS256.txt'),
+      versionDir: (name !== 'node' ? name + '-' : '') + version,
+      libUrl32: libUrl32,
+      libUrl64: libUrl64,
+      libPath32: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl32).path)),
+      libPath64: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl64).path))
+    }
+  }
+
+  // older versions without process.release are captured here and we have to make
+  // a lot of assumptions, additionally if you --target=x.y.z then we can't use the
+  // current process.release
+
+  baseUrl = distBaseUrl
+  libUrl32 = resolveLibUrl(name, baseUrl, 'x86', versionSemver.major)
+  libUrl64 = resolveLibUrl(name, baseUrl, 'x64', versionSemver.major)
+  // making the bold assumption that anything with a version number >3.0.0 will
+  // have a *-headers.tar.gz file in its dist location, even some frankenstein
+  // custom version
+  canGetHeaders = semver.satisfies(versionSemver, headersTarballRange)
+  tarballUrl = url.resolve(baseUrl, name + '-v' + version + (canGetHeaders ? '-headers' : '') + '.tar.gz')
+
+  return {
+    version: version,
+    semver: versionSemver,
+    name: name,
+    baseUrl: baseUrl,
+    tarballUrl: tarballUrl,
+    shasumsUrl: url.resolve(baseUrl, 'SHASUMS256.txt'),
+    versionDir: (name !== 'node' ? name + '-' : '') + version,
+    libUrl32: libUrl32,
+    libUrl64: libUrl64,
+    libPath32: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl32).path)),
+    libPath64: normalizePath(path.relative(url.parse(baseUrl).path, url.parse(libUrl64).path))
+  }
+}
+
+function normalizePath (p) {
+  return path.normalize(p).replace(/\\/g, '/')
+}
+
+function resolveLibUrl (name, defaultUrl, arch, versionMajor) {
+  var base = url.resolve(defaultUrl, './')
+    , hasLibUrl = bitsre.test(defaultUrl) || (versionMajor === 3 && bitsreV3.test(defaultUrl))
+
+  if (!hasLibUrl) {
+    // let's assume it's a baseUrl then
+    if (versionMajor >= 1)
+      return url.resolve(base, 'win-' + arch  +'/' + name + '.lib')
+    // prior to io.js@1.0.0 32-bit node.lib lives in /, 64-bit lives in /x64/
+    return url.resolve(base, (arch === 'x64' ? 'x64/' : '') + name + '.lib')
+  }
+
+  // else we have a proper url to a .lib, just make sure it's the right arch
+  return defaultUrl.replace(versionMajor === 3 ? bitsreV3 : bitsre, '/win-' + arch + '/')
+}
+
+module.exports = processRelease

node_modules/node-gyp/lib/rebuild.js

@@ -0,0 +1,14 @@
+
+module.exports = exports = rebuild
+
+exports.usage = 'Runs "clean", "configure" and "build" all at once'
+
+function rebuild (gyp, argv, callback) {
+
+  gyp.todo.push(
+      { name: 'clean', args: [] }
+    , { name: 'configure', args: argv }
+    , { name: 'build', args: [] }
+  )
+  process.nextTick(callback)
+}

node_modules/node-gyp/lib/remove.js

@@ -0,0 +1,52 @@
+
+module.exports = exports = remove
+
+exports.usage = 'Removes the node development files for the specified version'
+
+/**
+ * Module dependencies.
+ */
+
+var fs = require('fs')
+  , rm = require('rimraf')
+  , path = require('path')
+  , log = require('npmlog')
+  , semver = require('semver')
+
+function remove (gyp, argv, callback) {
+
+  var devDir = gyp.devDir
+  log.verbose('remove', 'using node-gyp dir:', devDir)
+
+  // get the user-specified version to remove
+  var version = argv[0] || gyp.opts.target
+  log.verbose('remove', 'removing target version:', version)
+
+  if (!version) {
+    return callback(new Error('You must specify a version number to remove. Ex: "' + process.version + '"'))
+  }
+
+  var versionSemver = semver.parse(version)
+  if (versionSemver) {
+    // flatten the version Array into a String
+    version = versionSemver.version
+  }
+
+  var versionPath = path.resolve(gyp.devDir, version)
+  log.verbose('remove', 'removing development files for version:', version)
+
+  // first check if its even installed
+  fs.stat(versionPath, function (err, stat) {
+    if (err) {
+      if (err.code == 'ENOENT') {
+        callback(null, 'version was already uninstalled: ' + version)
+      } else {
+        callback(err)
+      }
+      return
+    }
+    // Go ahead and delete the dir
+    rm(versionPath, callback)
+  })
+
+}