import type { ImageOrVideo } from 'react-native-image-crop-picker';
import type { ImageSource, Point, TextOptions } from 'react-native-photo-manipulator';
import type { FileVO, IUploadTempSource, UploadItem } from '../interface';
export declare function getThumbnailImageUrl(url?: string, width?: number, height?: number): string;
export declare function isMp4(mimeType: string): boolean;
export declare function isImage(mimeType: string): boolean;
export declare function isCompressSupportType(mimeType: string): boolean;
/**
 * 根据URL获取文件扩展名
 * @param filePath
 * @returns
 */
export declare function getFileExt(filePath: string): string;
export declare function exec(func: ((...param: any) => any) | undefined, ...params: any[]): any;
/**
 * 根据文档的mime类型，返回占位图标
 * @param type
 * @returns
 */
export declare function getDocumentPlaceholderIconByMimeType(type: string): string;
/**
 * 生成资源唯一key
 * @returns
 */
export declare function getFileKey(): string;
/**
 * 上传列表格式化（一般用于远程资源列表在上传中回显）
 */
export declare function formatUploadList(list: FileVO[]): UploadItem[];
/**
 * 图片、视频压缩
 * @param images
 * @param shouldCompress
 * @returns
 */
export declare function compressImageOrVideo(images: Partial<ImageOrVideo>[], shouldCompress?: boolean): Promise<IUploadTempSource[]>;
interface ImageSize {
    width: number;
    height: number;
}
declare type WatermarkText = string | TextOptions;
declare type GetWatermarkMethod = (size?: ImageSize) => Promise<Array<WatermarkText> | WatermarkText>;
interface Overlay {
    overlay: ImageSource;
    position: Point;
}
declare type GetOverlayMethod = (size?: ImageSize) => Promise<Array<Overlay> | Overlay>;
export declare type WatermarkOperations = Array<WatermarkText | GetWatermarkMethod | Overlay | GetOverlayMethod>;
/**
 * 添加图片水印
 * @param image
 * @param watermark
 * @returns
 */
export declare function printWatermark(image: ImageSource, watermark?: WatermarkOperations, size?: ImageSize): Promise<string>;
export {};
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