/**
 * Remove all occurrences of characters from the beginning and end of the string
 *
 * @param input  The string
 * @param characters The characters(s) to remove
 */
export declare function clean(input: string, characters?: (string | RegExp | (string | RegExp)[])): string;
/**
 * Remove all occurrences of characters from the end of the string
 *
 * @param input  The string
 * @param characters  he characters(s) to remove
 */
export declare function cleanEnd(input: string, characters?: (string | RegExp | (string | RegExp)[])): string;
/**
 * Remove all occurrences of characters from the start of the string
 *
 * @param input The string
 * @param characters The characters(s) to remove
 */
export declare function cleanStart(input: string, characters?: (string | RegExp | (string | RegExp)[])): string;
export default clean;