export type ImageSize = {
    width: number;
    height: number;
};
/**
 * 加载图片，加载完成后调用回调,支持promise
 * @param src 需要加载的图片
 * @param cb 回调
 */
export declare const loadImage: (src: string, cb?: ((src?: string) => void) | undefined) => Promise<unknown>;
/**
 * 获取图片的原始尺寸 支持回调和promise
 * @param src
 * @param cb
 */
export declare const getImageSize: (src: string, cb?: ((size: ImageSize) => void) | undefined) => Promise<ImageSize>;