import { ValidationErrors, AbstractControl, ValidatorFn } from "@angular/forms";
export declare class SpaValidators {
    static arrayMin(val: number): ValidatorFn;
    static optionalEmail(control: AbstractControl): ValidationErrors | null;
    static requiredEmail(control: AbstractControl): ValidationErrors | null;
    static cpf(control: AbstractControl): ValidationErrors | null;
    static cnpj(control: AbstractControl): ValidationErrors | null;
}