/**
 *
 * ### Description
 *  Decompress a WebP file to an image file
 *
 * ### Examples
 * ```js
 * await dwebp('me.webp', 'me.png')
 * await dwebp('me.webp', 'me.ppm', '-ppm')
 * ```
 * ### Params
 * @param input path of the output WebP file
 * @param output path of the output file (PNG format by default)
 * @param options https://developers.google.com/speed/webp/docs/dwebp
 */
export declare function dwebp(input: string, output: string, ...options: string[]): Promise<string>;