npm ERR! code ETIMEDOUTnpm ERR! errno ETIMEDOUTnpm ERR! network request to http://nexus.h3yun.com:

问题描述

在 cmd 安装 yarn  出现安装失败  时间超时问题   如图下：

npm ERR! code ETIMEDOUT
npm ERR! errno ETIMEDOUT
npm ERR! network request to http://nexus.h3yun.com:8888/repository/npm-all/yarn failed, reason: connect ETIMEDOUT 122.9.139.231:8888
npm ERR! network This is a problem related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly.  See: 'npm help config'

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\86176\AppData\Roaming\npm-cache\_logs\2023-02-13T01_41_09_682Z-debug.log

 解决方法：

检查node与npm是否安装成功

node -v  npm -v

全局安装epress测试npm是否能正常使用 npm install express -g

安装失败，连接超时，进行如下操作

npm config set proxy null 清空代理npm cache clean --force 清理缓存npm config set registry http://registry.npmjs.org/ 重新设置镜像源npm config set registry https://registry.npm.taobao.org 国内淘宝镜像（如果嫌安装依赖慢的话 可以使用这个） 

 再次安装express进行测试