无法在 MacOS 上安装 TypeScript - 终端错误

Question

我的 Mac 上有 Visual Studio Code，并且想要安装 TypeScript for Angular。我想我之前已经安装了 Node.js 或 Git。如果 TypeScript 在 Mac 终端中运行，来自 TypeScript 网站的此命令应该会安装 TypeScript，但事实并非如此：

npm install -g typescript

如果我将其粘贴到终端中并按 Enter 键，则终端中会出现此错误代码：（问题是什么？我真的不明白并且对终端一无所知，我不是计算机专业人士。会吗？如果您能为初学者提供简单易懂的提示，将会有很大帮助。谢谢！！）

MacBook-Pro:~ Max$ npm install -g typescript
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
npm ERR! path /usr/local/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
npm ERR!  { [Error: EACCES: permission denied, access '/usr/local/lib/node_modules']
npm ERR!   stack:
npm ERR!    'Error: EACCES: permission denied, access \'/usr/local/lib/node_modules\'',
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/usr/local/lib/node_modules' }
npm ERR! 
npm ERR! The operation was rejected by your operating system.
npm ERR! It is likely you do not have the permissions to access this file as the current user
npm ERR! 
npm ERR! If you believe this might be a permissions issue, please double-check the
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator (though this is not recommended).

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/Max/.npm/_logs/2018-06-30T14_50_35_633Z-debug.log
MacBook-Pro:~ Max$ clear

    MacBook-Pro:~ Max$ npm install -g typescript
    npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
    npm ERR! path /usr/local/lib/node_modules
    npm ERR! code EACCES
    npm ERR! errno -13
    npm ERR! syscall access
    npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
    npm ERR!  { [Error: EACCES: permission denied, access '/usr/local/lib/node_modules']
    npm ERR!   stack:
    npm ERR!    'Error: EACCES: permission denied, access \'/usr/local/lib/node_modules\'',
    npm ERR!   errno: -13,
    npm ERR!   code: 'EACCES',
    npm ERR!   syscall: 'access',
    npm ERR!   path: '/usr/local/lib/node_modules' }
    npm ERR! 
    npm ERR! The operation was rejected by your operating system.
    npm ERR! It is likely you do not have the permissions to access this file as the current user
    npm ERR! 
    npm ERR! If you believe this might be a permissions issue, please double-check the
    npm ERR! permissions of the file and its containing directories, or try running
    npm ERR! the command again as root/Administrator (though this is not recommended).

    npm ERR! A complete log of this run can be found in:
    npm ERR!     /Users/Max/.npm/_logs/2018-06-30T14_58_29_869Z-debug.log
    MacBook-Pro:~ Max$ clear

    MacBook-Pro:~ Max$ npm install -g typescript
    npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
    npm ERR! path /usr/local/lib/node_modules
    npm ERR! code EACCES
    npm ERR! errno -13
    npm ERR! syscall access
    npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
    npm ERR!  { [Error: EACCES: permission denied, access '/usr/local/lib/node_modules']
    npm ERR!   stack:
    npm ERR!    'Error: EACCES: permission denied, access \'/usr/local/lib/node_modules\'',
    npm ERR!   errno: -13,
    npm ERR!   code: 'EACCES',
    npm ERR!   syscall: 'access',
    npm ERR!   path: '/usr/local/lib/node_modules' }
    npm ERR! 
    npm ERR! The operation was rejected by your operating system.
    npm ERR! It is likely you do not have the permissions to access this file as the current user
    npm ERR! 
    npm ERR! If you believe this might be a permissions issue, please double-check the
    npm ERR! permissions of the file and its containing directories, or try running
    npm ERR! the command again as root/Administrator (though this is not recommended).

Answer 1

npm WARN checkPermissions 缺少对 /usr/local/lib/node_modules 的写访问权限

意味着您需要权限才能下载到该位置，它需要root权限的原因可能是因为您使用root权限安装了nodejs/npm。

sudo npm install -g typescript

然后输入您的密码