Fix build without hammerjs

Author: peterpeterparker

package.json

@@ -29,7 +29,6 @@
     "@angular/core": "^4.0.0",
     "@angular/platform-browser": "^4.0.0",
     "@angular/platform-browser-dynamic": "^4.0.0",
-    "@types/hammerjs": "^2.0.34",
     "@types/jasmine": "2.5.38",
     "@types/node": "~6.0.60",
     "codelyzer": "~2.0.0",
@@ -45,20 +44,20 @@
     "karma-coverage-istanbul-reporter": "^0.2.0",
     "karma-jasmine": "~1.1.0",
     "karma-jasmine-html-reporter": "^0.2.2",
+    "lodash": "^4.6.1",
     "node-watch": "^0.5.2",
     "protractor": "~5.1.0",
+    "raf": "^3.1.0",
+    "rebound": "^0.0.13",
     "rollup": "^0.41.6",
     "run-sequence": "^1.2.2",
     "rxjs": "^5.1.0",
+    "sister": "^3.0.0",
     "ts-node": "~2.0.0",
     "tslint": "~4.5.0",
     "typescript": "~2.2.0",
-    "zone.js": "^0.8.4",
-    "lodash": "^4.6.1",
-    "raf": "^3.1.0",
-    "rebound": "^0.0.13",
-    "sister": "^3.0.0",
-    "vendor-prefix": "^0.1.0"
+    "vendor-prefix": "^0.1.0",
+    "zone.js": "^0.8.4"
   },
   "engines": {
     "node": ">=6.0.0"

src/angular2-swing/swing-stack-component.ts

@@ -1,12 +1,11 @@
-declare var require: any;
-
 import {Component, Input,
     AfterContentInit, EventEmitter } from '@angular/core';
 
-import { Direction, ThrowEvent, DragEvent, Stack, Card, StackConfig } from './swing';
 import {SwingCardComponent} from './swing-card-component';
 
-const Swing = require('swing');
+import {StackConfig, ThrowEvent, DragEvent} from './swing';
+
+import Stack from '../swing/stack';
 
 @Component({
     selector: '[swing-stack]',
@@ -45,7 +44,7 @@ export class SwingStackComponent implements AfterContentInit {
     dragend: EventEmitter<DragEvent> = new EventEmitter<DragEvent>();
 
     cards: SwingCardComponent[];
-    stack: Stack;
+    stack: any;
 
     constructor() {
         this.cards = [];
@@ -59,7 +58,7 @@ export class SwingStackComponent implements AfterContentInit {
     }
 
     ngAfterContentInit() {
-        this.stack = Swing.Stack(this.stackConfig || {});
+        this.stack = Stack(this.stackConfig || {});
         this.cards.forEach((c) => this.stack.createCard(c.getNativeElement()));
 
         // Hook various events

src/angular2-swing/swing.ts

@@ -72,28 +72,6 @@ export interface Card {
     on(eventName: DragEventName, callabck: (event: DragEvent) => void): void;
 }
 
-export interface Stack {
-
-    /**
-     * Creates an instance of Card and associates it with an element.
-     *
-     * @param {HTMLElement} element
-     * @return {Card}
-     */
-    createCard(elment: HTMLElement): void;
-
-    /**
-     * Returns an instance of Card associated with an element.
-     *
-     * @param {HTMLElement} element
-     * @return {Card|null}
-     */
-    getCard(element: HTMLElement): Card;
-
-    on(eventName: ThrowEventName, callabck: (event: ThrowEvent) => void): void;
-    on(eventName: DragEventName, callabck: (event: DragEvent) => void): void;
-}
-
 export interface StackConfig {
 
     minThrowOutDistance?: number;

src/swing/card.ts

@@ -4,12 +4,14 @@ import rebound from 'rebound';
 import vendorPrefix from 'vendor-prefix';
 import raf from 'raf';
 import Direction from './Direction';
+
 import {
     elementChildren,
     isTouchDevice
 } from './utilities';
 
 declare var global: any;
+declare var Hammer: any;
 
 /**
  * @param {number} fromX

src/swing/stack.ts

@@ -7,7 +7,7 @@ import Card from './card';
  * @param {Object} config Stack configuration.
  * @returns {Object} An instance of Stack object.
  */
-const Stack = (config) => {
+export const Stack = (config) => {
     let eventEmitter;
     let index;
     let springSystem;