import { QueryBuilder } from '../query';
export declare type VarNameGen = {
    next(ref: Ref): string;
};
export interface RefAble {
    ref(...path: string[]): Ref;
}
export declare function isRefAble(obj: any): obj is RefAble;
export declare function varNameGen(startI?: number): VarNameGen;
export declare class Ref {
    readonly scope: Readonly<QueryBuilder>;
    readonly path: Readonly<string[]>;
    private _name;
    constructor(scope: Readonly<QueryBuilder>, path: Readonly<string[]>);
    ref(...path: string[]): Ref;
    get name(): string;
    clone(): Ref;
    toString(): string;
}