/**
 * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
 * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
 * @category String
 * @param {string} [src] The string to escape.
 * @returns {string} Returns the escaped string.
 * @see escape, escapeRegExp, unescape
 * @example
 *
 * escapeRegExp('[lodash](https://lodash.com/)')
 * // => '\[lodash\]\(https://lodash\.com/\)'
 */
export declare function escapeRegExp(src: string): string;