import type KeyedDB from "@adiwajshing/keyed-db";
import type { Comparable } from "@adiwajshing/keyed-db/lib/Types";
import type { Logger } from "pino";
import type { BaileysEventEmitter, Chat, ConnectionState, Contact, GroupMetadata, MessageInfo, PresenceData, WAMessage } from "../Types";
export declare const waChatKey: (pin: boolean) => {
    key: (c: Chat) => string;
    compare: (k1: string, k2: string) => number;
};
export declare const waMessageID: (m: WAMessage) => string;
export declare type BaileysInMemoryStoreConfig = {
    chatKey: Comparable<Chat, string>;
    logger: Logger;
};
declare const _default: ({ logger, chatKey }: BaileysInMemoryStoreConfig) => {
    chats: KeyedDB<Chat, string>;
    contacts: {
        [_: string]: Contact;
    };
    messages: {
        [_: string]: {
            array: import("../Types").WAProto.IWebMessageInfo[];
            get: (id: string) => import("../Types").WAProto.IWebMessageInfo;
            upsert: (item: import("../Types").WAProto.IWebMessageInfo, mode: "append" | "prepend") => void;
            update: (item: import("../Types").WAProto.IWebMessageInfo) => boolean;
            remove: (item: import("../Types").WAProto.IWebMessageInfo) => boolean;
            updateAssign: (id: string, update: Partial<import("../Types").WAProto.IWebMessageInfo>) => boolean;
            clear: () => void;
            filter: (contain: (item: import("../Types").WAProto.IWebMessageInfo) => boolean) => void;
        };
    };
    groupMetadata: {
        [_: string]: GroupMetadata;
    };
    messageInfos: {
        [id: string]: MessageInfo;
    };
    state: ConnectionState;
    presences: {
        [id: string]: {
            [participant: string]: PresenceData;
        };
    };
    listen: (ev: BaileysEventEmitter) => void;
};
export default _default;