* Convert a regexp pattern to Password Rules format * @param {string} regexp - The regular expression pattern * @returns {string|null} Passw

* Normalize a character class for Password Rules format * In Password Rules: * - If ']' is part of the class, it must be the LAST character

* Build the final password rules string * @private

* Extract min/max length from match * Supports both closed quantifiers like {8,20} and open-ended ones like {8,} * @private

* Convert lookaheads to required character classes * @private

* Internal method to perform conversion * @private

* Expand a regexp shorthand class escape to its bracket-class equivalent * @private

* Extract positive lookaheads from the pattern * Handles escaped ] (\]) in character classes * @private

* Remove lookaheads to get the main pattern * @private

* Normalize pattern by removing anchors * @private

* Extract allowed characters from character class match * Excludes character types that are already required (since required chars are implicitly

* Try to match simple patterns like \d*, \w+, etc. * @private

* Validate that lookaheads are in supported format * @private