import { Message } from "./Message";
export declare class PriorityInbox {
    private limiter;
    private pendingMessages;
    private messageQueue;
    private processMessage;
    private subscription;
    constructor();
    init(processMessage: (message: Message) => Promise<void>): void;
    stop(): void;
    private checkPriorityInbox;
    enqueue(message: Message, priority?: string): void;
    dequeue(): Message | null;
    hasPendingMessages(): boolean;
    size(): number;
    private getPriorityValue;
    private defaultProcessMessage;
}