import { RcFile } from 'antd/lib/upload';
/**
 * 截取文件后缀
 */
export declare function getFileSuffix(fileName: string): string;
/**
 * 判断是否是图片
 */
export declare function isImage(fileName: string | undefined): boolean;
interface ICheckFileProps {
    /**允许上传的文件类型 */
    ztAccept?: string[];
    /**允许上传的最大文件大小 */
    maxSize?: number;
    /**最大文件大小提示 */
    maxSizeStr?: string;
}
/**
 * 附件格式、大小等验证
 */
export declare function checkFile(file: RcFile, restParams: ICheckFileProps): string | Promise<RcFile>;
export {};