我使用的是Windows 8.1 x64操作系统，同时安装了Visual Studio 2013 Ultimate。我以管理员身份运行控制台并执行npm install -g karma（其他模块同理），但出现了以下错误：
npm WARN optional dep failed, continuing fsevents@0.2.0 /
ws@0.4.31在C:\Program Files (x86)\nodejs\node_modules\karma\node_module s\socket.io\node_modules\socket.io-client\node_modules\ws中进行安装(node-gyp rebuild 2> builderror.log) || (exit 0)
npm WARN optional dep failed, continuing fsevents@0.2.0 /
ws@0.4.31在C:\Program Files (x86)\nodejs\node_modules\karma\node_module s\socket.io\node_modules\socket.io-client\node_modules\ws中进行安装(node-gyp rebuild 2> builderror.log) || (exit 0)
C:\Program Files (x86)\nodejs\node_modules\karma\node_modules\socket.io\node_mod
ules\socket.io-client\node_modules\ws>node "C:\Users\Filip\AppData\Roaming\npm\n
ode_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" r
ebuild
Building the projects in this solution one at a time. To enable parallel build,
please add the "/m" switch.
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.Cpp.Platform.t
argets(64,5): error MSB8020: The build tools for Visual Studio 2010 (Platform T
oolset = 'v100') cannot be found. To build using the v100 build tools, please i
nstall Visual Studio 2010 build tools. Alternatively, you may upgrade to the c
urrent Visual Studio tools by selecting the Project menu or right-click the sol
ution, and then selecting "Upgrade Solution...". [C:\Program Files (x86)\nodejs
\node_modules\karma\node_modules\socket.io\node_modules\socket.io-client\node_m
odules\ws\build\bufferutil.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.Cpp.Platform.t
argets(64,5): error MSB8020: The build tools for Visual Studio 2010 (Platform T
oolset = 'v100') cannot be found. To build using the v100 build tools, please i
nstall Visual Studio 2010 build tools. Alternatively, you may upgrade to the c
urrent Visual Studio tools by selecting the Project menu or right-click the sol
ution, and then selecting "Upgrade Solution...". [C:\Program Files (x86)\nodejs
\node_modules\karma\node_modules\socket.io\node_modules\socket.io-client\node_m
odules\ws\build\validation.vcxproj]
karma@0.12.16 C:\Program Files (x86)\nodejs\node_modules\karma
├── di@0.0.1
├── graceful-fs@2.0.3
├── rimraf@2.2.8
├── colors@0.6.2
├── mime@1.2.11
├── q@0.9.7
├── chokidar@0.8.2 (recursive-readdir@0.0.2)
├── minimatch@0.2.14 (sigmund@1.0.0, lru-cache@2.5.0)
├── optimist@0.6.1 (wordwrap@0.0.2, minimist@0.0.10)
├── source-map@0.1.34 (amdefine@0.1.0)
├── glob@3.2.11 (inherits@2.0.1, minimatch@0.3.0)
├── lodash@2.4.1
├── log4js@0.6.15 (semver@1.1.4, async@0.1.15, readable-stream@1.0.27-1)
├── http-proxy@0.10.4 (pkginfo@0.3.0, utile@0.2.1)
├── useragent@2.0.8 (lru-cache@2.2.4)
├── connect@2.12.0 (uid2@0.0.3, methods@0.1.0, cookie-signature@1.0.1, fresh@0.2
.0, pause@0.0.1, debug@0.8.1, qs@0.6.6, bytes@0.2.1, buffer-crc32@0.2.1, batch@0
.5.0, raw-body@1.1.2, cookie@0.1.0, negotiator@0.3.0, send@0.1.4, multiparty@2.2
.0)
└── socket.io@0.9.17 (base64id@0.1.0, policyfile@0.0.4, redis@0.7.3, socket.io-c
lient@0.9.16)