/**
 * Get the dimensions of an image from a URL.
 * @param {string} url The URL of the image. It can be a local file (blob url) or a remote file.
 * @param {{maxWidth?: number, maxHeight?: number}} opts Options for the image size.
 * @param {number} opts.maxWidth The maximum width of the image.
 * @param {number} opts.maxHeight The maximum height of the image.
 * @returns {Promise<{width: number, height: number, naturalWidth: number, naturalHeight: number}>} The dimensions of the image.
 */
export declare function imageSize(url: string, opts?: {
    maxWidth?: number;
    maxHeight?: number;
}): Promise<{
    width: number;
    height: number;
    naturalWidth: number;
    naturalHeight: number;
}>;