2021-12-15
NPM简介
NPM是随同NodeJS一起安装的包管理工具，能解决NodeJS代码部署上的很多问题，常见的使用场景有以下几种：
- 允许用户从NPM服务器下载别人编写的第三方包到本地使用。
- 允许用户从NPM服务器下载并安装别人编写的命令行程序到本地使用。
- 允许用户将自己编写的包或命令行程序上传到NPM服务器供别人使用。
换源
显示当前的镜像网址:
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npm get registry |
显示：https://registry.npmjs.org/
更换淘宝的镜像网址：
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npm config set registry http://registry.npm.taobao.org |
再次查看当前镜像：
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npm get registry |
显示：http://registry.npm.taobao.org/
更换成功！
遇到报错
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*npm ERR! code ENOTFOUND*``*npm ERR! errno ENOTFOUND**npm ERR! network request to http://registry.npm.taobao.org/hexo-helper-live2d failed, reason: getaddrinfo ENOTFOUND registry.npm.taobao.org**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! /Users/joseph_wilson/.npm/_logs/2020-03-21T09_51_58_938Z-debug.log* |
使用下面代码解决：
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npm --registry http://registry.cnpmjs.org info underscore |