/**
 * @title FileType
 * @description 文件名后缀, 仅识别数字和字母组成的文件拓展名后缀
 * @version 0.1.0
 */
export declare type FileType = 'Image' | 'Video' | 'PDF' | 'Word' | 'Excel';
/**
 * @title FileTypeMap
 * @description 文件类型映射
 * @version 0.1.0
 */
export declare const FileTypeMap: Map<FileType, string[]>;
/**
 * @title isFileExtension
 * @description 是否为指定字符串结尾
 * @param fileName string 文件名
 * @param list string[] 文件拓展名数组
 * @returns boolean
 * @version 0.1.0
 */
export declare function isFileExtension(fileName: string, list?: string[]): boolean;
/**
 * @title isFile
 * @param fileName string
 * @param type {FileType}
 * @returns boolean
 * @version 0.1.0
 */
export declare function isFile(fileName: string, type: FileType): boolean;
/**
 * @title isImageFile
 * @param fileName string
 * @returns boolean
 * @version 0.1.0
 */
export declare function isImageFile(fileName: string): boolean;
/**
 * @title isVideoFile
 * @param fileName string
 * @returns boolean
 * @version 0.1.0
 */
export declare function isVideoFile(fileName: string): boolean;
/**
 * @title isPdfFile
 * @param fileName string
 * @returns boolean
 * @version 0.1.0
 */
export declare function isPdfFile(fileName: string): boolean;
/**
 * @title isWordFile
 * @param fileName string
 * @returns boolean
 * @version 0.1.0
 */
export declare function isWordFile(fileName: string): boolean;
/**
 * @title isExcelFile
 * @param fileName string
 * @returns boolean
 * @version 0.1.0
 */
export declare function isExcelFile(fileName: string): boolean;
export declare const isClient: boolean;
/**
 * @title isBoolean
 * @description 是否为布尔值
 * @param val {unknown}
 * @returns {boolean}
 */
export declare const isBoolean: (val: unknown) => val is boolean;
export declare const isWindow: (val: unknown) => val is Window;
export declare const isIOS: boolean | "";
export declare const hasOwn: <T extends object, K extends keyof T>(val: T, key: K) => key is K;
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