Error installing ng2-cable

[hazardco]

I am trying to use ng2-cable with a Rails application. I have the following error when installing it:

npm install ng2-cable --save eventos@0.0.1 /Users/luis/Sites/ionic3/eventos ├── UNMET PEER DEPENDENCY @angular/core@4.4.3 ├── ng2-cable@2.0.7 └── UNMET PEER DEPENDENCY zone.js@0.8.18

Maybe it's silly but I'm a rookie in Angular.

My package.json:

Thanks and sorry for my english.

[hazardco]

it´s ok!!!

import { Ng2Cable, Broadcaster } from 'ng2-cable/index';

[viktor-shmigol]

cool