npm install安装失败--解决

npm install 安装时出错，一直安装不成功

npm ERR! code ETIMEDOUT
npm ERR! errno ETIMEDOUT
npm ERR! network request to https://registry.npm.taobao.org/clipboard failed, reason: connect ETIMEDOUT 112.54.108.89:
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'

解决办法：

1、执行：

npm config get proxy
npm config get https-proxy

如果返回值不为null，继续执行：
（这一步很重要，一定要保证两个命令的返回值都为null,话说回来，应该出现这个错误这两个返回值有不为null的）

npm config set proxy null
npm config set https-proxy null

2、执行：
npm config set registry http://registry.cnpmjs.org/
然后你就可以愉快的安装cnpm了

npm install  --registry=https://registry.npm.taobao.org 

作者：Sunnky
链接：https://www.jianshu.com/p/3fd7d90db01a
来源：简书
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