import { ObjectTypeOptions } from '@nestjs/graphql';
import { Decorator } from './types';
export type VariantOfOptions = Omit<ObjectTypeOptions, 'implements'> & {
    /**
     * The column name to check the discriminator against
     *
     * @default "kind"
     */
    column?: string;
    /**
     * The value of the discriminator column which identifies that the general sum type is this concrete type
     *
     * @default <the table name>
     */
    tag?: string;
    /**
     * The column name on the sum type which forms the relation with this type
     *
     * @default "id"
     */
    parentId?: string;
    /**
     * The column name on this type which forms the relation with the sum type
     *
     * @default "id"
     */
    childId?: string;
};
/**
 * Marks an object type as a variant of a variant type These are the options of a sum type
 *
 * @extends ObjectType
 * @extends TableExtension
 * @extends RelationExtension
 *
 * @param type An arrow function which returns type which this type is a variant of
 * @param name The name of the table which backs this type
 * @param options Standard Nestjs object type options plus options to configure the relation & discriminator
 */
export declare function VariantOf<T>(type: () => T, name: string, options?: VariantOfOptions): Decorator;
/**
 * Marks an object type as a variant of a variant type These are the options of a sum type
 *
 * @extends ObjectType
 * @extends TableExtension
 * @extends RelationExtension
 *
 * @param type An arrow function which returns type which this type is a variant of
 * @param options Standard Nestjs object type options plus options to configure the relation & discriminator
 */
export declare function VariantOf<T>(type: () => T, options?: VariantOfOptions): Decorator;