/// <reference types="node" />
import FormData, { Stream } from 'form-data';
import { BotInstance } from '../../BotInstance';
import { AssetCreateResponseInternal } from './asset.types';
export declare class AssetAPI {
    private self;
    constructor(self: BotInstance);
    /**
     * 上传文件
     * @param file 文件，看到参数错误时需要在选项中补齐文件相关内容。
     * @param option 选项，参见 [form-data](https://github.com/form-data/form-data)
     */
    create(file: Buffer | Stream, option?: FormData.AppendOptions): Promise<AssetCreateResponseInternal>;
}