npm工具人

檢視自己是否安裝淘寶映象：
npm config get registry

如果沒有下載，可以下載：
npm config set registry https://registry.npm.taobao.org

npm config set proxy null

npm install --registry=https://registry.npm.taobao.org

刪除  .npmrc

SASS_BINARY_PATH
C:\Users\qiujianfeng\AppData\Roaming\npm-cache\node-sass\4.14.1\win32-x64-64_binding.node

聽君一席話，改用yarn

npm install -g yarn --registry=https://registry.npm.taobao.org
yarn config set registry https://registry.npm.taobao.org -g
yarn config set sass_binary_site http://cdn.npm.taobao.org/dist/node-sass -g