Class type `Js.regExp`

Specification of Javascript regular expression objects.

method exec : js_string t -> match_result_handle t opt meth
method test : js_string t -> bool t meth
method toString : js_string t meth
method source : js_string t readonly_prop
method global : bool t readonly_prop
method ignoreCase : bool t readonly_prop
method multiline : bool t readonly_prop
method lastIndex : int prop