interface PromisifyArgs<SuccessArg, FailArg> {
    success?: (args: SuccessArg) => void;
    fail?: (args: FailArg) => void;
}
declare type Args<T, SuccessArg, FailArg> = T & PromisifyArgs<SuccessArg, FailArg>;
interface Fn<Arg, SuccessArg, FailArg> {
    (args: Args<Arg, SuccessArg, FailArg>): void;
}
/**
 * 小程序API Promise化, 如果传递`success`或者`fail`也会继续调用回调函数.
 *
 * @template Arg fn参数类型.
 * @template SuccessArg `success`函数参数类型, 同`then`方法参数类型.
 * @template FailArg `fail`函数参数类型, 由于Promise catch方法参数被定义为`any`, `FailArg`泛型参数不能用于catch参数推断.
 * @param fn 小程序API函数.
 * @returns Promisified小程序API函数, 注: reject参数为小程序错误对象,
 * 小程序错误类型为纯对象`{ error: number; errorMessage: string; }`而非原生Error实例,
 * 访问[小程序前端 API 错误码对照表](https://opendocs.alipay.com/mini/00nmrr)了解更多.
 * @see https://zhuanlan.zhihu.com/p/123324774
 * @see https://github.com/remaxjs/promise-mini-api/blob/master/promisify.ts
 */
declare function promisify<Arg = unknown, SuccessArg = unknown, FailArg = unknown>(fn: Fn<Arg, SuccessArg, FailArg>): (args?: Args<Arg, SuccessArg, FailArg> | undefined) => Promise<SuccessArg>;
export default promisify;
export type { PromisifyArgs, Args, Fn };