export interface DeviceEntry {
    address: string;
    serial: string;
}
export type DeviceMap = Record<string, DeviceEntry>;
/** Add or update an alias. The alias follows the physical device, so the
 * serial is overwritten with whatever the latest address reports. */
export declare function setAlias(map: DeviceMap, alias: string, address: string, serial: string): DeviceMap;
export declare function removeAlias(map: DeviceMap, alias: string): DeviceMap;
/** Resolve a user ref to a reachable address. If the ref names a known alias,
 * use its stored address; otherwise treat the ref itself as a raw address. */
export declare function lookupRef(map: DeviceMap, ref: string): {
    address: string;
    alias: string | undefined;
};
export declare function loadDevices(): DeviceMap;
export declare function saveDevices(map: DeviceMap): string;
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