FetchError: request to https://registry.npmjs.org/swiper failed, reason: connect ECONNREFUSED 127.0.0.1:9000

安装swiper插件时，报错，经过下边方法解决后，重新安装swiper，成功！

 

FetchError: request to https://registry.npmjs.org/swiper failed, reason: connect ECONNREFUSED 127.0.0.1:9000

问题描述：

 

 解决方法：

1、取消npm代理设置，执行命令

npm config set proxy null

npm config set https-proxy null

2、添加淘宝镜像

npm --registry https://registry.npm.taobao.org info underscore