/**
 * Pads `string` on the left side if it's shorter than `length`. Padding
 * characters are truncated if they exceed `length`.
 *
 * @since 5.12.0
 * @category String
 * @param string The string to pad.
 * @param length The padding length.
 * @param chars The string used as padding.
 * @returns Returns the padded string.
 * @example
 *
 * ```js
 * padStart('abc', 6)
 * // => '   abc'
 *
 * padStart('abc', 6, '_-')
 * // => '_-_abc'
 *
 * padStart('abc', 2)
 * // => 'abc'
 * ```
 */
export declare function padStart(string?: string, length?: number, chars?: string): string;
export default padStart;