// Ionic 3
npm install [email protected] --save

// Ionic 4
npm install [email protected] --save

import { IonicSelectableModule } from 'ionic-selectable';

@NgModule({
  imports: [
    IonicSelectableModule
  ]
})
export class AppModule { }

import { IonicSelectableModule } from 'ionic-selectable';
import { HomePage } from './home';

@NgModule({
  declarations: [
    HomePage
  ],
  imports: [
    IonicPageModule.forChild(HomePage),
    IonicSelectableModule
  ]
})
export class HomePageModule { }

<ion-item>
  <ion-label>Port</ion-label>
  <ionic-selectable
    item-content // Required for Ionic 3 only.
    [(ngModel)]="port"
    [items]="ports"
    itemValueField="id"
    itemTextField="name"
    [canSearch]="true"
    (onChange)="portChange($event)">
  </ionic-selectable>
</ion-item>

import { IonicSelectableComponent } from 'ionic-selectable';

class Port {
  public id: number;
  public name: string;
}

@Component({ ... })
export class HomePage {
  ports: Port[];
  port: Port;

  constructor() {
    this.ports = [
      { id: 1, name: 'Tokai' },
      { id: 2, name: 'Vladivostok' },
      { id: 3, name: 'Navlakhi' }
    ];
  }

  portChange(event: {
    component: IonicSelectableComponent,
    value: any 
  }) {
    console.log('port:', event.value);
  }
}