Regular Expression-how to replace a PHP recursive Regular Expression statement with a JavaScript non-recursive statement?

Recently, I am working on a markdown Parsing Library for the js version. I plan to migrate a popular library named Parsedown on the Internet to js completely, so that the front and back ends have the same display effect, however, I found that the original author uses recursion when using regular expressions, but js regular expressions do not support recursion... recently, I am working on a markdown Parsing Library for the js version. I plan to migrate a popular library named Parsedown on the Internet to js completely, so that the front and back ends have the same display effect, however, I found that the original author uses recursion when using regular expressions, but js regular expressions do not support recursion. Therefore, to find a perfect solution for migration, the following is the PHP code. Note: preg_matchPart

    protected function identifyLink($Excerpt)    {        $extent = $Excerpt['text'][0] === '!' ? 1 : 0;        if (strpos($Excerpt['text'], ']') and preg_match('/\[((?:[^][]|(?R))*)\]/', $Excerpt['text'], $matches))        {

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Recently, I am working on a markdown Parsing Library for the js version. I plan to migrate a popular library named Parsedown on the Internet to js completely, so that the front and back ends have the same display effect, however, I found that the original author uses recursion when using regular expressions, but js regular expressions do not support recursion. Therefore, to find a perfect solution for migration, the following is the PHP code. Note:preg_matchPart

    protected function identifyLink($Excerpt)    {        $extent = $Excerpt['text'][0] === '!' ? 1 : 0;        if (strpos($Excerpt['text'], ']') and preg_match('/\[((?:[^][]|(?R))*)\]/', $Excerpt['text'], $matches))        {

Why do I write a parsing script on Github?

Https://github.com/jgm/stmd

Download the stmd. js file under js.

Look at this, php-to-js https://github.com/Danack/PHP-to-Javascript