/// <reference types="node" />
import { StorageEngine } from 'multer';
import sharp from 'sharp';
export declare enum FormatEnum {
    heic = "heic",
    heif = "heif",
    avif = "avif",
    jpeg = "jpeg",
    jpg = "jpg",
    png = "png",
    raw = "raw",
    tiff = "tiff",
    tif = "tif",
    webp = "webp",
    gif = "gif",
    jp2 = "jp2",
    jpx = "jpx",
    j2k = "j2k",
    j2c = "j2c"
}
export declare enum QueryParamsEnum {
    height = "height",
    width = "width",
    format = "format"
}
export interface QueryParams {
    height?: number;
    width?: number;
    format?: keyof sharp.FormatEnum;
}
export interface S3StorageOptions {
    region: string;
    bucketName: string;
    accessKeyId: string;
    secretAccessKey: string;
}
export interface DiskStorageOptions {
    dest: string;
}
export interface Storage {
    save: (id: string, image: Buffer) => Promise<boolean>;
    fetch: (id: string) => Promise<Buffer | undefined>;
    exists: (id: string) => Promise<boolean>;
    getMulterStorage?: () => StorageEngine;
}