js_regex_to_ruby

https://github.com/jasl/js_regex_to_ruby

A Ruby gem that converts ECMAScript (JavaScript) regular expressions to Ruby Regexp objects, preserving behavior as closely as Ruby's regex engine allows. Handles flag mapping (i, s, m), anchor conversion (^/$ to \A/\z), inline modifiers, and control character escapes. Emits warnings for JS features without direct Ruby equivalents (g, y, u, v, d flags).