import { ValidationArguments, ValidationOptions, ValidatorConstraintInterface } from 'class-validator';
import { DisplaysService } from '../services/displays.service';
export declare class DisplayExistsConstraint implements ValidatorConstraintInterface {
    private readonly displaysService;
    constructor(displaysService: DisplaysService);
    validate(value: string | string[]): Promise<boolean>;
    defaultMessage(args: ValidationArguments): string;
}
export declare function ValidateDisplayExists(validationOptions?: ValidationOptions): (object: object, propertyName: string) => void;