/**
 * Converts the HTML entities `&`, `<`, `>`, `"`, and `'` in `str` to their corresponding characters.
 * It is the inverse of `escape`.
 *
 * @param {string} str The string to unescape.
 * @returns {string} Returns the unescaped string.
 *
 * @example
 * unescape('This is a &lt;div&gt; element.'); // returns 'This is a <div> element.'
 * unescape('This is a &quot;quote&quot;'); // returns 'This is a "quote"'
 * unescape('This is a &#39;quote&#39;'); // returns 'This is a 'quote''
 * unescape('This is a &amp; symbol'); // returns 'This is a & symbol'
 */
declare function unescape(str?: string): string;

export { unescape };