为什么NPM会给我关于未满足的依赖项的未满足的依赖项警告？

Question

I'm trying to get angular2 up and running with typescript and node, but it keeps giving me warnings about unmet peer dependencies. However, this suggests they are available:

tyler@tyler-Blade-Stealth:~/projects/mockups$ npm install -g @angular/core
/usr/share/node/lib
├── @angular/core@2.4.3 
├── UNMET PEER DEPENDENCY rxjs@^5.0.1
└── UNMET PEER DEPENDENCY zone.js@^0.7.2

npm WARN @angular/core@2.4.3 requires a peer of rxjs@^5.0.1 but none was installed.
npm WARN @angular/core@2.4.3 requires a peer of zone.js@^0.7.2 but none was installed.
tyler@tyler-Blade-Stealth:~/projects/mockups$ npm view rxjs | grep version:
  version: '5.0.3',
tyler@tyler-Blade-Stealth:~/projects/mockups$ npm view zone.js | grep version:
  version: '0.7.4',

How can I make these warnings go away?

Answer 1

npm view在注册表中显示有关程序包的信息，而不显示是否已安装。