/**
 * Simple wrapper around fetch API tailored for CEF/NUI use. This abstraction
 * can be extended to include AbortController if needed or if the response isn't
 * JSON. Tailor it to your needs.
 *
 * @param eventName - The endpoint eventname to target
 * @param data - Data you wish to send in the NUI Callback
 * @param mockData - Mock data to be returned if in the browser
 *
 * @return returnData - A promise for the data sent back by the NuiCallbacks CB argument
 */
export declare function fetchNui<T = any>(eventName: string, data?: any, mockData?: T): Promise<T>;