import { GraphQLUnionType } from 'graphql';
import { UnionMetadata } from '../metadata';
import { TypeDefinitionsStorage } from '../storages/type-definitions.storage';
import { ResolveTypeFactory } from './resolve-type.factory';
export interface UnionDefinition {
    id: symbol;
    type: GraphQLUnionType;
}
export declare class UnionDefinitionFactory {
    private readonly resolveTypeFactory;
    private readonly typeDefinitionsStorage;
    constructor(resolveTypeFactory: ResolveTypeFactory, typeDefinitionsStorage: TypeDefinitionsStorage);
    create(metadata: UnionMetadata): UnionDefinition;
    private createResolveTypeFn;
}