import type { Logger, TrueConfResponse } from './types';
export interface WsClientLike {
    sendRequest(method: string, payload: Record<string, unknown>, traceId?: string): Promise<TrueConfResponse>;
    onAuth(listener: () => void): () => void;
}
/**
 * In-memory at-least-once delivery queue for TrueConf outbound requests.
 *
 * FIFO is preserved within the parked-set on each drain. Items submitted
 * concurrently with a drain are not order-guaranteed against parked items
 * (the in-flight drain holds a snapshot of pending IDs at start; a fresh
 * `submit` lands in `pending` but may attempt before the drain finishes).
 */
export declare class OutboundQueue {
    private readonly client;
    private readonly logger;
    private readonly pending;
    private idCounter;
    private draining;
    private terminalError;
    private offAuth;
    constructor(client: WsClientLike, logger: Logger);
    submit(method: string, payload: Record<string, unknown>): Promise<TrueConfResponse>;
    private attempt;
    private isReconnectable;
    failAll(err: Error): void;
    private drain;
}
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