/**
 * Converts the first character of string to upper case and the remaining to lower case.
 *
 * @param string - The string to capitalize
 * @returns The capitalized string
 *
 * @example
 * ```ts
 * capitalize('FRED');
 * // => 'Fred'
 *
 * capitalize('fred');
 * // => 'Fred'
 * ```
 */
export declare function capitalize(string: string): string;
/**
 * Converts the first character of string to upper case, leaving the rest unchanged.
 *
 * @param string - The string to capitalize
 * @returns The capitalized string
 *
 * @example
 * ```ts
 * capitalizeFirst('fred');
 * // => 'Fred'
 *
 * capitalizeFirst('FRED');
 * // => 'FRED'
 * ```
 */
export declare function capitalizeFirst(string: string): string;
/**
 * Converts the first character of each word in the string to upper case.
 *
 * @param string - The string to convert
 * @returns The title cased string
 *
 * @example
 * ```ts
 * titleCase('fred, barney, and pebbles');
 * // => 'Fred, Barney, And Pebbles'
 * ```
 */
export declare function titleCase(string: string): string;