➜  whatsapp sudo npm install -g @angular/[email protected]
/usr/local/lib
├── @angular/[email protected]
├── UNMET PEER DEPENDENCY rxjs@^5.0.1
└── UNMET PEER DEPENDENCY zone.js@^0.8.4

npm WARN @angular/[email protected] requires a peer of rxjs@^5.0.1 but none was installed.
npm WARN @angular/[email protected] requires a peer of zone.js@^0.8.4 but none was installed.