import { AsyncEmitter } from '@gecogvidanto/shared';
/**
 * The levels for the notification.
 */
export declare const enum NotificationLevel {
    Success = 0,
    Info = 1,
    Warning = 2,
    Error = 3
}
/**
 * The notification event.
 */
export interface NotificationEvent {
    level: NotificationLevel;
    message: string;
}
/**
 * Manager for the notifications of the application.
 */
export default class NotificationManager extends AsyncEmitter<NotificationEvent> {
    /**
     * Emit a success message.
     *
     * @param message - The message.
     * @returns A resolved promise when emit done.
     */
    emitSuccess(message: string): Promise<void>;
    /**
     * Emit an information message.
     *
     * @param message - The message.
     * @returns A resolved promise when emit done.
     */
    emitInfo(message: string): Promise<void>;
    /**
     * Emit a warning message.
     *
     * @param message - The message.
     * @returns A resolved promise when emit done.
     */
    emitWarning(message: string): Promise<void>;
    /**
     * Emit an error message.
     *
     * @param message - The message.
     * @returns A resolved promise when emit done.
     */
    emitError(message: string): Promise<void>;
}