import * as mongo from "mongodb";
import { Document } from "./Document";
import { Event } from "./Event";
import { Filter } from "./Filter";
import { Options } from "./Options";
import { Update } from "./Update";
export declare class Collection<T extends Document, Shard extends keyof T & string> {
    private backend;
    readonly shard: Shard;
    readonly idLength: 4 | 8 | 12 | 16;
    private hexadecmialIdLength;
    readonly updated: Event<mongo.WithId<Record<string, any>>[Shard][]>;
    constructor(backend: mongo.Collection, shard: Shard, idLength?: 4 | 8 | 12 | 16);
    get(filter: Filter<T>): Promise<T | undefined>;
    list(filter?: Filter<T>): Promise<T[]>;
    create(document: T): Promise<T | undefined>;
    create(documents: T[]): Promise<T[]>;
    private deleteHelper;
    delete(document: Filter<T> & Document): Promise<T | undefined>;
    delete(document: Filter<T>): Promise<T | number | undefined>;
    delete(documents: (Filter<T> & Document)[]): Promise<T[]>;
    private updateHelper;
    update(document: Filter<T> & Update<T> & Options & Document): Promise<T | undefined>;
    update(document: Filter<T> & Update<T> & Document): Promise<T | undefined>;
    update(document: Filter<T> & Update<T>): Promise<T | number | undefined>;
    update(documents: (Filter<T> & Update<T> & Options & Document)[]): Promise<T[]>;
    getDistinct(field: string): Promise<any[]>;
    private toBase64;
    private toBase16;
    private toDocument;
    private fromDocument;
}