ng2-pipes/src/app/pipes/array/every.ts

Useful angular2 pipes

import {PipeTransform, Pipe} from '@angular/core';

@Pipe({name: 'every'})
export class EveryPipe implements PipeTransform {

  transform(arr: any[], predicate: (value: any, index: number, array: any[]) => boolean): boolean {
    return Array.isArray(arr) ? arr.every(predicate) : arr;
  }
}