import { ValidatorConstraintInterface } from 'class-validator';
import { ObjectId } from 'mongodb';
import type { EntityManager } from '../entity/manager';
import type { IsValidRelationshipValidationArguments } from './decorators';
export declare class IsValidRelationshipConstraint implements ValidatorConstraintInterface {
    private em;
    private message;
    defaultMessage?(): string;
    validate(value: ObjectId | ObjectId[], args: IsValidRelationshipValidationArguments): Promise<boolean>;
    setEm(em: EntityManager): IsValidRelationshipConstraint;
}
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