import { BehaviorSubject } from "rxjs";
export declare function format(first: string, middle: string, last: string): string;
export declare class Timer {
    /**
     * started time
     */
    private startedTime;
    /**
     * Current work interval id
     */
    private intervalId;
    /**
     * Passed callback func
     */
    private callbackFunction;
    /**
     * Start timer
     */
    start(cb: (time: string, startedTime: Date) => void): void;
    /**
     * Reset timer
     */
    reset(): void;
    /**
     * delete timer
     */
    delete(): void;
}
export declare class ChatMessagesLogic {
    /**
     * */
    private static scrollToBotCallback;
    /**
     * */
    static setScrollToBot(callback: () => void): void;
    /**
     * */
    static safeScrollToBot(): void;
}
export declare class ChatDictionaryService {
    static dictionary: any;
    static dictionary$: BehaviorSubject<any>;
}