-import { ChangeDetectorRef, Component, OnDestroy, OnInit } from '@angular/core';
-import { ActivatedRoute, Router } from '@angular/router';
-import { BehaviorSubject } from 'rxjs/BehaviorSubject';
+import { ChangeDetectorRef, Component, OnDestroy, OnInit } from '@angular/core'
+import { ActivatedRoute, Router } from '@angular/router'
+import { Subscription } from 'rxjs/Subscription'
+import { BehaviorSubject } from 'rxjs/BehaviorSubject'