import { ValidationArguments, ValidationOptions, ValidatorConstraintInterface } from 'class-validator';
import { ChannelsService } from '../../../modules/devices/services/channels.service';
import { DevicesService } from '../../../modules/devices/services/devices.service';
export declare class DeviceChannelExistsConstraintValidator implements ValidatorConstraintInterface {
    private readonly deviceService;
    private readonly channelService;
    constructor(deviceService: DevicesService, channelService: ChannelsService);
    validate(channelId: string | undefined, args: ValidationArguments): Promise<boolean>;
    defaultMessage(args: ValidationArguments): string;
}
export declare const ValidateChannelExists: (validationOptions?: ValidationOptions) => (object: object, propertyName: string) => void;