/**
 * @fileOverview
 * @author Ramon Wijnands - rayman747@hotmail.com
 */
/**
 * If a message was compressed as a PNG image (a compression hack since
 * gzipping over WebSockets * is not supported yet), this function decodes
 * the "image" as a Base64 string.
 *
 * @param data - An object containing the PNG data.
 */
export default function decompressPng(data: string): unknown;