export default presenceSystem;
export type FbDatabase = typeof import("firebase/database");
export type DataSnapshot = import("firebase/database").DataSnapshot;
export type DatabaseReference = import("firebase/database").DatabaseReference;
declare namespace presenceSystem {
    function browserVersion(lodash?: string): string;
    function start(database: object, myConnectionsRef: string | object, lastOnlineRef: string | object, data?: {
        connected?: boolean | object | undefined;
        removeError?: Function | undefined;
        getDate?: Function | undefined;
    }): void;
}
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