场景：

使用 npm element-plus --save 

问题：

npm ERR! code ECONNREFUSED

npm ERR! errno ECONNREFUSED

npm ERR! FetchError: request to https://registry.npmjs.org/element-plus failed, reason: connect ECONNREFUSED 127.0.0.1:443

npm ERR!     at ClientRequest.<anonymous> (D:\Nodejs\node_modules\npm\node_modules\node-fetch-npm\src\index.js:68:14)

npm ERR!     at ClientRequest.emit (events.js:210:5)

npm ERR!     at TLSSocket.socketErrorListener (_http_client.js:406:9)

npm ERR!     at TLSSocket.emit (events.js:210:5)

npm ERR!     at emitErrorNT (internal/streams/destroy.js:92:8)

npm ERR!     at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)

npm ERR!     at processTicksAndRejections (internal/process/task_queues.js:80:21)

npm ERR!  FetchError: request to https://registry.npmjs.org/element-plus failed, reason: connect ECONNREFUSED 127.0.0.1:443

npm ERR!     at ClientRequest.<anonymous> (D:\Nodejs\node_modules\npm\node_modules\node-fetch-npm\src\index.js:68:14)

npm ERR!     at ClientRequest.emit (events.js:210:5)

npm ERR!     at TLSSocket.socketErrorListener (_http_client.js:406:9)

npm ERR!     at TLSSocket.emit (events.js:210:5)

npm ERR!     at emitErrorNT (internal/streams/destroy.js:92:8)

npm ERR!     at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)

npm ERR!     at processTicksAndRejections (internal/process/task_queues.js:80:21) {

npm ERR!   message: 'request to https://registry.npmjs.org/element-plus failed, reason: connect ECONNREFUSED 127.0.0.1:443',

npm ERR!   type: 'system',

npm ERR!   errno: 'ECONNREFUSED',

npm ERR!   code: 'ECONNREFUSED',

npm ERR!   stack: 'FetchError: request to https://registry.npmjs.org/element-plus failed, reason: connect ECONNREFUSED 127.0.0.1:443\n' +

npm ERR!     '    at ClientRequest.<anonymous> (D:\\Nodejs\\node_modules\\npm\\node_modules\\node-fetch-npm\\src\\index.js:68:14)\n' +

npm ERR!     '    at ClientRequest.emit (events.js:210:5)\n' +

npm ERR!     '    at TLSSocket.socketErrorListener (_http_client.js:406:9)\n' +

npm ERR!     '    at TLSSocket.emit (events.js:210:5)\n' +

npm ERR!     '    at emitErrorNT (internal/streams/destroy.js:92:8)\n' +

npm ERR!     '    at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)\n' +

npm ERR!     '    at processTicksAndRejections (internal/process/task_queues.js:80:21)'

npm ERR! }

npm ERR!

npm ERR! If you are behind a proxy, please make sure that the

npm ERR! 'proxy' config is set properly.  See: 'npm help config'

在错误中描述中不难看出 是因为proxy（代理）的问题，所以我们可以重点查看下 prxoy 的一个配置

解决方案：

1、查看proxy的配置情况：分别使用 npm config get proxy  和 npm config get https-proxy。如果两者返回 null ，则使用：npm config set registry  设置一个代理点。完成以后重复之前的操作命令即可
2、代理点出现：

FetchError: request to https://registry.npmjs.org/element-plus failed, reason: connect ECONNREFUSED 127.0.0.1:443，如果出现该情况，同样更换下代理点即可，如设置成淘宝的代理点：npm config set registry https://registry.npm.taobao.org

总结：

1、该问题主要述说的是npm proxy 的一个配置使用问题。

2、代理点不能使用的问题更换问题。
3、相关知识点：npm config get proxy、npm config get https-proxy 、npm config set registry