import { UploadFile } from './utils/file.util';
/**
 * @summary 获取文件类型。
 * @alias module:Browser.getFileType
 * @since 5.1.0
 * @requires Other.checkFileType
 * @param {File} file 文件对象。支持 antd `UploadFile` 对象。
 * @returns {"image" | "audio" | "video" | "pdf" | "word" | "excel" | undefined} 如果是 `image` `audio` `video` `pdf` `word` `excel` 这些类型的文件，返回对应的类型值，否则返回 `undefined`。
 * @example
 *
 * const pdf = new File([], '1.pdf', { type: 'application/pdf' });
 * const jpeg = new File([], 'xx.jpeg', { type: 'image/jpeg' });
 *
 * getFileType(pdf); // 'pdf'
 * getFileType(jpeg); // 'image'
 *
 * @description 内置文件类型和文件类型说明符
 *
 * | 类型 | 说明符 |
 * |---|---|
 * | `image` | `image/*,.jpeg,.jpg,.gif,.bmp,.png,.webp,.svg,.apng,.avif,.ico,.cur,.tif,.tiff,.jfif,.pjpeg,.pjp` |
 * | `audio` | `audio/*,.mp3,.wav,.aac,.flac` |
 * | `video` | `video/*,.mp4,.webm,.ogg,.mov,.mpg,.mpeg,.avi,.mkv,.wmv,.flv,.rm,.rmvb` |
 * | `pdf` | `application/pdf,.pdf` |
 * | `word` | `application/vnd.openxmlformats-officedocument.wordprocessingml.document,.doc,.docx` |
 * | `excel` | `application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,application/vnd.ms-excel,.xls,.xlsx` |
 *
 */
declare function getFileType(file: File | UploadFile): "image" | "audio" | "video" | "pdf" | "word" | "excel" | undefined;
export default getFileType;