Source: \escapeRegExp.js
/**
* Used to match `RegExp`
* [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
*/
const reRegExpChar = /[\\^$.*+?()[\]{}|]/g
const reHasRegExpChar = RegExp(reRegExpChar.source)
/**
* Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
* "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
*
* @since 3.0.0
* @category String
* @param {string} [string=''] The string to escape.
* @returns {string} Returns the escaped string.
* @see escape, escapeRegExp, unescape
* @example
*
* escapeRegExp('[lodash](https://lodash.com/)')
* // => '\[lodash\]\(https://lodash\.com/\)'
*/
function escapeRegExp(string) {
return (string && reHasRegExpChar.test(string))
? string.replace(reRegExpChar, '\\$&')
: string
}
export default escapeRegExp