import { BaseDocument, Collection } from './collection';
export type Query = {
    [key: string]: any;
};
export type SortQuery = {
    [key: string]: 1 | -1;
};
export type Projection = {
    [key: string]: 0 | 1;
};
export declare class Cursor<T extends BaseDocument = BaseDocument> implements PromiseLike<T[]> {
    db: Collection;
    query: Query;
    _limit: number;
    _skip: number;
    _sort: SortQuery;
    _projection: Projection;
    constructor(db: Collection, query?: Query);
    limit(limit: number): this;
    skip(skip: number): this;
    sort(sortQuery: SortQuery): this;
    projection(projection: Projection): this;
    project(candidates: T[]): any[];
    exec(): Promise<T[]>;
    map(fn: (item: T) => Promise<any> | any): Promise<any[]>;
    then<TResult1 = T[], TResult2 = never>(onfulfilled?: ((value: T[]) => PromiseLike<TResult1> | TResult1) | undefined | null, onrejected?: ((reason: any) => PromiseLike<TResult2> | TResult2) | undefined | null): PromiseLike<TResult1 | TResult2>;
}