Regex Rewrite AND pattern

I would like to create a regex for rewriting.

Rewrite the whole request to index.php (no match needed) that doesn't start with / api or end ('.html' or '.js' or '.css' or '.png')

My example is still there, but doesn't work well:

(!^/api|!\\.html$|!\\.js$|!\\.css$|!\\.png$) /index.html [L]

      

        
        
        
      

    

Example:

/a/b/c.css -> not rewrite
/a/b/c -> rewrite
/api/something -> not rewrite