import { AbstractControl } from '@angular/forms';
export declare class CreditCardValidators {
    static isCreditCard(control: AbstractControl): {
        [key: string]: boolean;
    };
    static americanExpress(control: AbstractControl): {
        [key: string]: boolean;
    };
    static dinersclub(control: AbstractControl): {
        [key: string]: boolean;
    };
    static discover(control: AbstractControl): {
        [key: string]: boolean;
    };
    static jcb(control: AbstractControl): {
        [key: string]: boolean;
    };
    static maestro(control: AbstractControl): {
        [key: string]: boolean;
    };
    static mastercard(control: AbstractControl): {
        [key: string]: boolean;
    };
    static visa(control: AbstractControl): {
        [key: string]: boolean;
    };
}