import type { ITransportInfo } from '../../../types/public.js';
/**
 * Interface for the Transport Registry.
 * Manages the storage and mapping of transports and their assigned Slave IDs.
 */
export interface ITransportRegistry {
    has(id: string): boolean;
    get(id: string): ITransportInfo | undefined;
    getAll(): ITransportInfo[];
    add(info: ITransportInfo): void;
    remove(id: string): Promise<ITransportInfo | undefined>;
    size(): number;
    assignSlave(transportId: string, slaveId: number): void;
    unassignSlave(transportId: string, slaveId: number): void;
    getSlaveAssignments(slaveId: number): string[];
    clearSlaveAssignments(transportId: string): void;
}
/**
 * Thread-safe registry for managing Modbus transports.
 * Maintains a primary map of transports and a secondary map for reverse-lookup of Slave IDs to Transports.
 */
export declare class TransportRegistry implements ITransportRegistry {
    private readonly _transports;
    private readonly _slaveMap;
    private readonly _mutex;
    /**
     * Checks if a transport with the given ID exists in the registry.
     * @param {string} id - The transport identifier.
     */
    has(id: string): boolean;
    /**
     * Retrieves transport information by its ID.
     * @param {string} id - The transport identifier.
     */
    get(id: string): ITransportInfo | undefined;
    /**
     * Returns an array of all registered transports.
     */
    getAll(): ITransportInfo[];
    /**
     * Adds a new transport to the registry.
     * This operation is thread-safe and will update slave mappings automatically.
     *
     * @param {ITransportInfo} info - The transport information object.
     * @throws {Error} If a transport with the same ID already exists.
     */
    add(info: ITransportInfo): Promise<void>;
    /**
     * Removes a transport from the registry and cleans up slave mappings.
     * @param {string} id - The ID of the transport to remove.
     * @returns {Promise<ITransportInfo | undefined>} The removed transport info, or undefined if not found.
     */
    remove(id: string): Promise<ITransportInfo | undefined>;
    /**
     * Returns the number of registered transports.
     */
    size(): number;
    /**
     * Manually assigns a Slave ID to a specific transport.
     * @param {string} transportId - Target transport ID.
     * @param {number} slaveId - The Slave ID to assign.
     */
    assignSlave(transportId: string, slaveId: number): void;
    /**
     * Removes a Slave ID assignment from a transport.
     * @param {string} transportId - Target transport ID.
     * @param {number} slaveId - The Slave ID to remove.
     */
    unassignSlave(transportId: string, slaveId: number): void;
    /**
     * Returns a list of transport IDs assigned to a specific Slave ID.
     * @param {number} slaveId - The Slave ID to look up.
     */
    getSlaveAssignments(slaveId: number): string[];
    /**
     * Clears all Slave ID assignments for a specific transport in the reverse-lookup map.
     * @param {string} transportId - The transport ID to clear.
     */
    clearSlaveAssignments(transportId: string): void;
    /**
     * Removes all transports and clears all slave mappings.
     * Used during controller shutdown to fully release resources.
     */
    clearAll(): void;
    private _addToSlaveMap;
    private _removeFromSlaveMap;
}