import { CheckboxRequiredValidator } from '@angular/forms';
import * as i0 from "@angular/core";
/**
 * Validator for Sapphire switch's required attribute in template-driven checkbox.
 */
export declare class SapphireSwitchRequiredValidator extends CheckboxRequiredValidator {
    required: boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<SapphireSwitchRequiredValidator, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<SapphireSwitchRequiredValidator, "sp-switch[required][formControlName],             sp-switch[required][formControl], sp-switch[required][ngModel]", never, { "required": "required"; }, {}, never, never, false, never>;
}