import { Field, ObjectType } from '.';
interface JoinTable {
    tableName: string;
    joinColumn: string;
    inverseJoinColumn: string;
}
export interface Relation {
    type: string;
    columnType: string;
    nullable: boolean;
    joinColumn?: boolean;
    joinTable?: JoinTable;
    relatedTsProp?: string;
}
/**
 * Field resolver for related fields
 */
export interface FieldResolver {
    returnTypeFunc: string;
    fieldName: string;
    fieldNameColumnName: string;
    rootArgName: string;
    rootArgType: string;
    returnType: string;
    relatedTsProp: string | undefined;
    relationType: RelationTypeGuard;
    tableName: string;
}
export interface EntityRelationship {
    entity: ObjectType;
    relatedEntity: ObjectType;
    field: Field;
    relatedField: Field;
    type: string;
}
export declare enum RelationType {
    OTO = "oto",
    OTM = "otm",
    MTM = "mtm",
    MTO = "mto"
}
interface RelationTypeGuard {
    isOTO: boolean;
    isOTM: boolean;
    isMTO: boolean;
    isMTM: boolean;
    isTM: boolean;
    isTO: boolean;
}
export declare function getRelationType(r: Relation): RelationTypeGuard;
export {};