import { AbstractControl, ValidationErrors, ValidatorFn } from "@angular/forms";
import { DateComparison } from "../date-comparison.enum";
import * as i0 from "@angular/core";
/**
 * Validation service for bound date inputs, i.e. start dates and end dates
 */
/** @dynamic */
export declare class DateValidationService {
    constructor();
    /**
     * Error messages related to the different DateValidator errors.
     *
     * The constant should be named with the error key prefix.
     */
    static DateFormatErrorMessage: string;
    static FutureDateErrorMessage: string;
    /**
     * Validator to determine if a start date is before or after and end date based on the
     * date comparison method passed in
     * @param targetFormControlName - the opposite date input than the one the user changed
     * @param errorName - the error to display if they are out of order
     * @param dateComparisonMethod - before, after, beforeOrEqual, AfterOrEqual
     */
    static DateRangeValidator(targetFormControlName: string, errorName: string, dateComparisonMethod: DateComparison): ValidatorFn;
    /**
     * Validate that a date is in the correct format.  The form control value should be a plain JS Date object
     * due to the date picker.
     * @param control - the date input to check formatting on
     */
    static DateValidator(control: AbstractControl): ValidationErrors | null;
    /**
     * Remove a single error from a give form control
     * @param control - the form control with the error
     * @param error - the error to remove
     */
    private static removeSingleError;
    static ɵfac: i0.ɵɵFactoryDeclaration<DateValidationService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DateValidationService>;
}