export interface ServerInitOptions {
    baseUrl?: string;
    appId: string;
    secretKey: string;
}
export interface NotificationData {
    title?: string;
    body?: string;
    icon?: string;
    click_action?: string;
    data?: Record<string, any>;
}
export declare class NotificationServerClient {
    private baseUrl;
    private appId;
    private secretKey;
    constructor(options: ServerInitOptions);
    /**
     * Send a standard push notification to specific users implicitly abstracting the auth headers.
     */
    notification(options: {
        notificationData: NotificationData;
        externalUsers?: string[];
        scheduledAt?: string | Date;
    }): Promise<any>;
    /**
     * Send a silent payload (no visible push notification) to trigger background syncs
     * or updates within the application.
     */
    silentNotification(options: {
        data: Record<string, any>;
        externalUsers?: string[];
        scheduledAt?: string | Date;
    }): Promise<any>;
}
/**
 * Initialize the Vibe Message Server Client
 * This must ONLY be used on your backend environment, NEVER expose the secretKey securely on the frontend.
 */
export declare function initServerClient(options: ServerInitOptions): NotificationServerClient;
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