Ask HN: Better Regex Support for JavaScript?

My understanding is that regex in JavaScript is fairly crippled. http://www.regular-expressions.info/javascript.html lists a number of missing features. The most salient of these seem to be: # Lookbehind is not supported at all. Lookahead is fully supported. # No atomic grouping or possessive quantifiers One way to fix this would be to write a regex engine in JS. Does anyone know of any such projects? Alternatively, does anyone know of any other ways of supporting fully-featured regex in JS? (Making a request out to a web service written in a language with better regex support is the default option, but I'm hoping to find something with less external dependencies.) Thanks!