/**
 * Pads a string on both sides if it's shorter than the given length.
 *
 * @param string - The string to pad
 * @param length - The target length
 * @param chars - The padding characters
 * @returns The padded string
 */
export declare function pad(string: string, length?: number, chars?: string): string;
/**
 * Pads a string on the left if it's shorter than the given length.
 *
 * @param string - The string to pad
 * @param length - The target length
 * @param chars - The padding characters
 * @returns The padded string
 */
export declare function padStart(string: string, length?: number, chars?: string): string;
/**
 * Pads a string on the right if it's shorter than the given length.
 *
 * @param string - The string to pad
 * @param length - The target length
 * @param chars - The padding characters
 * @returns The padded string
 */
export declare function padEnd(string: string, length?: number, chars?: string): string;