import { Queryable } from "./Queryable";
import { FunctionExpression } from "../ExpressionBuilder/Expression/FunctionExpression";
import { IQueryExpression } from "./QueryExpression/IQueryExpression";
import { IQueryVisitor } from "../Query/IQueryVisitor";
export declare class DistinctQueryable<T> extends Queryable<T> {
    readonly parent: Queryable<T>;
    protected readonly selectorFn?: (item: T) => any;
    private _selector?;
    protected selector: FunctionExpression<any>;
    constructor(parent: Queryable<T>);
    buildQuery(queryVisitor: IQueryVisitor): IQueryExpression<T>;
    hashCode(): number;
}