/**
 * Determine the group code (A-Z, [] or #) to place an item under
 *
 * @remarks The group code is made by taking the first letter of the *description*.  As a special
 * case descriptions starting with '[' are grouped under [] and anything that isn't a letter is grouped
 * under #.
 *
 * @param input a description
 * @returns The group code
 */
export declare function groupCode(input: string): string;
export default groupCode;