npm下载相关依赖

Module build failed: Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (72)
For more information on which environments are supported please see:

在运行vue.js出现上面报错

原因；缺少依赖

1.先进入项目的前端目录

2.npm uninstall --save node-sass

3.npm install --save node-sass

这个时候就搞定了
如果还没搞定，就重回1步骤
然后开始接下来4步骤。

4.cnpm install