设置npm源
npm config get registry #查看npm源
npm config set registry https://registry.npmmirror.com/ #设置成淘宝镜像
npm config set registry https://registry.npmjs.org/ #恢复成npm官方镜像.npmrc模板
在项目根目录下创建.npmrc文件，内容如下：
shamefully-hoist=true
strict-peer-dependencies=false
sentrycli_cdnurl=https://cdn.npmmirror.com/binaries/sentry-cli
#ELECTRON 相关镜像
chromedriver_cdnurl=https://npmmirror.com/mirrors/chromedriver
phantomjs_cdnurl=http://npmmirror.com/mirrors/phantomjs
operadriver_cdnurl=http://npmmirror.com/mirrors/operadriver
ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/
ELECTRON_BUILDER_BINARIES_MIRROR=http://npmmirror.com/mirrors/electron-builder-binaries/
# SASS 淘宝镜像
SASS_BINARY_SITE=http://npmmirror.com/mirrors/node-sass
engine-strict = true
registry=https://registry.npmmirror.com/
resolution-mode=highest