intersection

bin/app/pipes/array/intersection.d.ts

@@ -1,4 +1,4 @@
 import { PipeTransform } from '@angular/core';
 export declare class IntersectionPipe implements PipeTransform {
-    transform(arr: any[], args?: any[]): any[];
+    transform(arr: any[], ...args: any[]): any[];
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ng2-pipes",
-  "version": "0.4.9",
+  "version": "0.4.10",
   "author": "Dan Revah",
   "description": "Useful angular2 pipes",
   "license": "MIT",

src/app/pipes/array/intersection.spec.ts

@@ -1,4 +1,4 @@
-import {IntersectionPipe} from "./intersection";
+import {IntersectionPipe} from './intersection';
 
 describe('IntersectionPipe', () => {
   let pipe: IntersectionPipe;
@@ -12,12 +12,12 @@ describe('IntersectionPipe', () => {
   });
 
   it('should return empty array if there are no elements in the intersection', () => {
-    expect(pipe.transform([1, 2, 3], [[4, 5, 6]])).toEqual([]);
-    expect(pipe.transform([1, 2, 3], [[4, 5, 6], [7, 8, 9]])).toEqual([]);
+    expect(pipe.transform([1, 2, 3], [4, 5, 6])).toEqual([]);
+    expect(pipe.transform([1, 2, 3], [4, 5, 6], [7, 8, 9])).toEqual([]);
   });
 
   it('should return intersection of arrays', () => {
-    expect(pipe.transform([1, 2, 3], [[1, 2 ,3, 4, 5, 6]])).toEqual([1,2,3]);
-    expect(pipe.transform([1, 2, 3], [[1, 2, 4, 5, 6], [1, 2, 7, 8, 9]])).toEqual([1, 2]);
+    expect(pipe.transform([1, 2, 3], [1, 2 ,3, 4, 5, 6])).toEqual([1,2,3]);
+    expect(pipe.transform([1, 2, 3], [1, 2, 4, 5, 6], [1, 2, 7, 8, 9])).toEqual([1, 2]);
   });
 });

src/app/pipes/array/intersection.ts

@@ -4,9 +4,9 @@ import {PipeTransform, Pipe, Injectable} from '@angular/core';
 @Pipe({name: 'intersection'})
 export class IntersectionPipe implements PipeTransform {
 
-  transform(arr:any[], args:any[] = []):any[] {
+  transform(arr: any[], ...args: any[]): any[] {
     return args.reduce((newArr, currArr) =>
         newArr.filter(elm => !!~currArr.indexOf(elm))
-    , arr);
+      , arr);
   }
 }