/**
 * A function that saves a string into a downloadable file
 * The download will have the extension specified or default to tx
 * The download and will start automatically
 * @param content string contents to be saved in the file
 * @param extension optional the extension of the file to be saved, if not specified, it will default to txt
 * @param filename optional the name of the file to be saved, if not specified, it will default to the current date
 */
export declare const saveContentAs: (content: string, filename?: string, extension?: string) => void;