·
To avoid the confusion due to the miss alignment of the router's package version which is already distributed as version 3.3.0 with Angular 2, i.e. Angular 2 contains router file version 3.3.0.
@angular/core 👉v2.3.0
@angular/compiler 👉v2.3.0
@angular/compiler-cli 👉v2.3.0
@angular/http 👉v2.3.0
@angular/router 👉v3.3.0‼️