Angular2 HammerJs swipe (final)

// app/app.component.ts

import { Component } from '@angular/core';

@Component({
  moduleId: module.id,
  selector: 'my-app',
  templateUrl: 'app.component.html',
  styleUrls: ['app.component.css']
})
export class AppComponent {
  
    SWIPE_ACTION = { LEFT: 'swipeleft', RIGHT: 'swiperight' };

    avatars = [
        {
            name: 'kristy',
            image: 'http://semantic-ui.com/images/avatar2/large/kristy.png',
            visible: true
        },
        {
            name: 'matthew',
            image: 'http://semantic-ui.com/images/avatar2/large/matthew.png',
            visible: false
        },
        {
            name: 'chris',
            image: 'http://semantic-ui.com/images/avatar/large/chris.jpg',
            visible: false
        },
        {
            name: 'jenny',
            image: 'http://semantic-ui.com/images/avatar/large/jenny.jpg',
            visible: false
        }
    ];
    
    swipe(currentIndex: number, action: number = this.SWIPE_ACTION.RIGHT) {
        console.log(currentIndex);
        if (currentIndex > this.avatars.length || currentIndex < 0) return;

        let nextIndex = 0;
        
        // next
        if (action === this.SWIPE_ACTION.RIGHT) {
            const isLast = currentIndex === this.avatars.length - 1;
            nextIndex = isLast ? 0 : currentIndex + 1;
        }

        // previous
        if (action === this.SWIPE_ACTION.LEFT) {
            const isFirst = currentIndex === 0;
            nextIndex = isFirst ? this.avatars.length - 1 : currentIndex - 1;
        }

        // toggle avatar visibility
        this.avatars.forEach((x, i) => x.visible = (i === nextIndex));
    }
}

import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { HammerGestureConfig, HAMMER_GESTURE_CONFIG } from '@angular/platform-browser';

import { AppComponent }   from './app.component';

export class MyHammerConfig extends HammerGestureConfig  {
  overrides = <any>{
      'swipe': {velocity: 0.4, threshold: 20} // override default settings
  }
}

@NgModule({
  imports:      [ BrowserModule ],
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ],
  providers:    [ { 
                    provide: HAMMER_GESTURE_CONFIG, 
                    useClass: MyHammerConfig 
                } ]
})

export class AppModule { }

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app.module';

const platform = platformBrowserDynamic();
platform.bootstrapModule(AppModule);

<!DOCTYPE html>
<html>
  <head>
    <title>Handle different form controls</title>
    <!-- Semantic CSS -->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.2.2/semantic.min.css">
  
    <!-- Hammer JS Touch Emulator: Uncomment if for desktop -->
    <!-- <script src="http://cdn.rawgit.com/hammerjs/touchemulator/master/touch-emulator.js"></script>
    <script>
      TouchEmulator();
    </script> -->
    
    <!-- Hammer JS -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/hammer.js/2.0.8/hammer.js"></script>

    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- 1. Load libraries -->
     <!-- Polyfill(s) for older browsers -->
    <script src="https://unpkg.com/core-js/client/shim.min.js"></script>

    <script src="https://unpkg.com/zone.js@0.6.23?main=browser"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3"></script>
    <script src="https://unpkg.com/systemjs@0.19.27/dist/system.src.js"></script>

    <!-- 2. Configure SystemJS -->
    <script src="systemjs.config.js"></script>
    <script>
      System.import('app').catch(function(err){ console.error(err); });
    </script>
  </head>

  <!-- 3. Display the application -->
  <body>
    <my-app>Loading...</my-app>
  </body>
</html>

/**
 * PLUNKER VERSION
 * (based on systemjs.config.js in angular.io)
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
  System.config({
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',
    typescriptOptions: {
      tsconfig: true
    },
    meta: {
      'typescript': {
        "exports": "ts"
      }
    },
    paths: {
      // paths serve as alias
      'npm:': 'https://unpkg.com/'
    },
    // map tells the System loader where to look for things
    map: {
      // our app is within the app folder
      app: 'app',

      // angular bundles
      '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
      '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
      '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
      '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
      '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
      '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
      '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
      '@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',

      // other libraries
      'rxjs':                       'npm:rxjs',
      'angular2-in-memory-web-api': 'npm:angular2-in-memory-web-api',
      'ts':                         'npm:plugin-typescript@4.0.10/lib/plugin.js',
      'typescript':                 'npm:typescript@2.0.2/lib/typescript.js',

    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: './main.ts',
        defaultExtension: 'ts'
      },
      rxjs: {
        defaultExtension: 'js'
      },
      'angular2-in-memory-web-api': {
        main: './index.js',
        defaultExtension: 'js'
      }
    }
  });
})(this);

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true
  }
}

<div class="ctn">
  <div class="inner-ctn">
    <h4 class="ui header medium center aligned">
      Swipe Avatars with HammerJS
      <div class="sub header">(swipe left or right)</div>
    </h4>
    <div class="ui card swipe-box" 
      *ngFor="let avatar of avatars; let idx=index"
      (swipeleft)="swipe(idx, $event.type)" (swiperight)="swipe(idx, $event.type)" 
      [class.visible]="avatar.visible" [class.hidden]="!avatar.visible">
      <div class="image">
        <img [src]="avatar.image" [alt]="avatar.name">
      </div>
      <div class="content">
        <a class="header">{{avatar.name}}</a>
      </div>
    </div>
  </div>
</div>

.swipe-box {
    display: block;
    width: 100%;
    float: left;
    margin: 0;
    transform: .5s ease .1s;
}

.ctn {
    max-width: 400px;
    margin: 0 auto;
}

.inner-ctn {
  margin: 20px;
}

.visible {
    display: block;
}

.hidden {
    display: none;
}