npm install出现npm ERR! Failed at the node-sass@4.14.1 postinstall script.异常

npm install时出现异常

报错信息如下：

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! node-sass@4.14.1 postinstall: node scripts/build.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@4.14.1 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

找不到sass，查看node-sass文件，里面没有文件。

所以在npm install前设置sass源。

直接在当前目录下进行node-sass 的数据源设置
npm config set sass_binary_site=https://npm.taobao.org/mirrors/node-sass

安装依赖：
npm install --registry=https://registry.npm.taobao.org