/**
 * The inverse of `escape`this method converts the HTML entities
 * `&`, `<`, `>`, `"` and `'` in `string` to
 * their corresponding characters.
 *
 * **Note:** No other HTML entities are unescaped. To unescape additional
 * HTML entities use a third-party library like [_he_](https://mths.be/he).
 *
 * @since 0.6.0
 * @category String
 * @param {string} [string=''] The string to unescape.
 * @returns {string} Returns the unescaped string.
 * @see escape, escapeRegExp
 * @example
 *
 * unescape('fred, barney, & pebbles')
 * // => 'fred, barney, & pebbles'
 */
export declare function unescape(string: string): string;