npm版本
TeamCity项目配置为：
执行run项目后，npm install指令一直执行中，但没有任何反应。
没有定位到问题原因，尝试替换为yarn来添加依赖包。
YARN官网：https://yarnpkg.com
下载安装YARN后，TeamCity的Agent服务需要<font color=red>重启</font>下，才能生效。
TeamCity中的任务指令改为yarn，效果如下：
run项目后，可能会报问题：
[15:06:32][Step 1/4] warning There appears to be trouble with your network connection. Retrying...
[15:07:11][Step 1/4] warning There appears to be trouble with your network connection. Retrying...
[15:07:26][Step 1/4] warning There appears to be trouble with your network connection. Retrying...
[15:07:30][Step 1/4] warning There appears to be trouble with your network connection. Retrying...
[15:07:36][Step 1/4] warning babel-preset-es2015@6.24.1: We're super 馃樃 excited that you're trying to use ES2015 syntax, but instead of continuing yearly presets 馃槶 , we recommend using babel-preset-env: npm install babel-preset-env. preset-env without options will compile ES2015+ down to ES5. And by targeting specific browsers, Babel can do less work and you can ship native ES2015+ to users 馃槑 ! Also, we are in the process of releasing v7, so give http://babeljs.io/blog/2017/09/12/planning-for-7.0 a read and test it! Thanks so much for using Babel 馃檹 , please give us a follow @babeljs for updates, join slack.babeljs.io for discussion and help support at opencollective.com/babel
[15:08:07][Step 1/4] warning There appears to be trouble with your network connection. Retrying...
[15:08:19][Step 1/4] warning express@2.5.11: express 2.x series is deprecated
[15:08:19][Step 1/4] warning connect@1.9.2: connect 1.x series is deprecated
[15:08:55][Step 1/4] warning There appears to be trouble with your network connection. Retrying...
[15:09:22][Step 1/4] error An unexpected error occurred: "https://registry.yarnpkg.com/postcss-modules-values: connect ETIMEDOUT 104.16.63.173:443".
[15:09:22][Step 1/4] info If you think this is a bug, please open a bug report with the information provided in "E:\\BuildAgent2\\work\\81f07a77be17b43b\\yarn-error.log".
[15:09:22][Step 1/4] info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
[15:09:22][Step 1/4] Process exited with code 1
此问题解决方法参考：http://www.jianshu.com/p/c60bdd6f07be，可在cmd中执行以下指令：
npm config set registry https://registry.npm.taobao.org
npm config set disturl https://npm.taobao.org/dist
这样就可以了。
