import type { CallAPI } from '../../api/calls.js';
/** Format a Server-Sent Event message. */
export declare function formatSSE(event: string, data: unknown): string;
/** Find first available port in range [start, start+9]. */
export declare function findAvailablePort(start: number): Promise<number>;
export interface DashboardOptions {
    mode: string;
    label: string;
    agentId: string;
    callApi: CallAPI;
    config?: Record<string, unknown>;
}
export declare class PhoneDashboard {
    private readonly opts;
    private server;
    private sseClients;
    private pollTimer;
    private startTime;
    private port;
    constructor(opts: DashboardOptions);
    /** Start the dashboard server and begin polling call status. */
    start(): Promise<number>;
    /** Stop the dashboard server and clean up. */
    stop(): Promise<void>;
    /** Broadcast an SSE event to all connected clients. */
    private broadcast;
    /** Poll call status from Agora API and broadcast updates. */
    private pollStatus;
    private handleRequest;
    private loadHTML;
}