npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! node-sass@4.13.0 postinstall: `node scripts/build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@4.13.0 postinstall script.
node-sass 的数据源没设置
npm config set sass_binary_site=https://npm.taobao.org/mirrors/node-sass
重新 npm install