import { StaticProvider } from '@angular/core';
import { FormControl } from '@angular/forms';
import { ValidationAlerts } from '../validation-alert/validation-alert';
import { FormValidatorBase } from './base-validator';
import * as i0 from "@angular/core";
/**
 * Provider for the FormFieldValidatorDirective directive
 */
export declare const REQUIRED_TRIMMED_VALIDATOR: StaticProvider;
/**
 * A Directive that marks a field as invalid if it is null or empty after being trimmed
 */
export declare class RequiredTrimmedValidatorDirective extends FormValidatorBase {
    /**
     * Indicates that this validator should be run
     */
    get requiredTrimmed(): boolean;
    set requiredTrimmed(value: boolean);
    /**
     * Internal placeholder for requiredTrimmed
     */
    private internalRequiredTrimmed;
    /**
     * Instantiates a new instance of RequiredTrimmedValidatorDirective
     */
    constructor();
    /**
     * Implementation of Validator interface.
     * Validates that the control contains a value other than null or whitespace
     * @param c The FormControl attached to this element
     * @return null when valid, otherwise returns a validation object
     */
    validate(c: FormControl): ValidationAlerts | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<RequiredTrimmedValidatorDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<RequiredTrimmedValidatorDirective, "sme-form-field[smeRequiredTrimmed][formControlName],sme-form-field[smeRequiredTrimmed][formControl],sme-form-field[smeRequiredTrimmed][ngModel]", never, { "requiredTrimmed": "smeRequiredTrimmed"; }, {}, never, never, false, never>;
}