import { MqttMessageTransformer } from "pigeon.interface";
type JSONValue = string | number | boolean | JSONObject | JSONArray;
type JSONArray = Array<JSONValue>;
interface JSONObject {
    [x: string]: JSONValue;
}
export declare const JsonTransform: MqttMessageTransformer<JSONObject>;
export declare const TextTransform: MqttMessageTransformer<string>;
export declare function getTransform(transform?: 'json' | 'text' | MqttMessageTransformer<unknown>): MqttMessageTransformer<unknown>;
export {};