declare type TJSONPCallbackRegistryFunction<T> = (response: T) => void;
declare type TJSONPCallback<T> = (err: Error | null, data: T | null) => void;
declare global {
    interface Window {
        callbackRegistry: {
            [key: string]: TJSONPCallbackRegistryFunction<never>;
        };
    }
}
/**
 * Simple implementation of JSONP.
 * It creates window.callbackRegistry to minimize global window pollution.
 * It uses callback to prevent adding the promise polyfill.
 */
export default function JSONP<T>(url: string, callback?: TJSONPCallback<T>, callbackName?: string): void;
export {};