/// <reference types="node" />
import { EventEmitter } from 'events';
export interface ObjectId {
    toHexString(): string;
    toString(format?: string): string;
    equals(otherID: ObjectId): boolean;
    getTimestamp(): Date;
}
export interface Collation {
    locale: string;
    caseLevel?: boolean;
    caseFirst?: string;
    strength?: number;
    numericOrdering?: boolean;
    alternate?: string;
    maxVariable?: string;
    backwards?: string;
}
export declare type MongoDocumentLike = MongoDocument | any;
export interface MongoDocument {
    _id?: ObjectId;
}
export interface MongoCommandResult {
    ok: number;
    n?: number;
    [key: string]: any;
}
export interface MongoUpdateStatement {
    q: MongoDocumentLike;
    u: MongoDocumentLike;
    upsert?: boolean;
    multi?: boolean;
    collation?: Collation;
}
export interface MongoCommandCallbackHandler {
    (name: Error, result?: MongoCommandResult): void;
}
export interface Connection extends EventEmitter {
    name: string;
    connect(options?: any): void;
    isConnected(): boolean;
    auth(mechanism: string, db: string, username: string, password: string, callback: Function): void;
    destroy(options?: any): void;
    isDestroyed(): boolean;
    command(ns: string, cmd: any, options: any, callback: MongoCommandCallbackHandler): any;
}
export interface MongoConnectionOptions {
    host: string;
    port: number;
    user?: string;
    pass?: string;
}
export interface AggregationQuery {
    filter?: any;
    group?: any;
    projection?: any;
    lookup?: any;
    formula?: any;
    graph?: any;
    sort?: any;
    skip?: number;
    limit?: number;
}