Typescript Angular 2 Pipe for Custom Currency

currency-custom.ts

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

@Pipe({
    name: 'currencyCustom'
})

export class CurrencyCustom implements PipeTransform {
    /**
     * @param value 
     */
    transform(value: any) {
        let formattedNumber = parseFloat(value).toFixed(2).replace(/(\d)(?=(\d{3})+(?:\.\d+)?$)/g, "$1,");
        return '$' + formattedNumber;
    }
}