npm install 过程中，报错信息如下：
npm ERR! code 128
npm ERR! An unknown git error occurred
npm ERR! command git --no-replace-objects ls-remote ssh://git@github.com/nhn/raphael.git
npm ERR! Connection reset by 20.205.243.166 port 22
npm ERR! fatal: Could not read from remote repository.
npm ERR!
npm ERR! Please make sure you have the correct access rights
npm ERR! and the repository exists.
原因：无法从 github 远程存储库中读取
解决方案：设置好本地通过 ssh 方式连接上 github
# git bash
$ cd ~/.ssh
$ ssh-keygen -t rsa -C "github 邮箱"
# 一直回车，直至生成公钥与私钥文件
# Your identification has been saved in /c/Users/shuang/.ssh/id_rsa
# Your public key has been saved in /c/Users/shuang/.ssh/id_rsa.pub
$ ls
$ cat id_rsa.pub
# 复制公钥信息添加到 github SSH keys 配置中# 测试 github 连接
$ ssh -T git@github.com
# Hi 用户名! You've successfully authenticated, but GitHub does not provide shell access.
