Mastering Advanced JavaScript Set Operations

JavaScript's Set data structure now offers powerful operations for managing unique collections. New methods include union() for combining sets, difference() for finding unique elements, symmetricDifference() for identifying elements unique to each set, and intersection() for finding common elements. Additional operations like isDisjointFrom(), isSubsetOf(), and isSupersetOf() enable easy comparisons between sets. These tools simplify tasks such as managing user roles, comparing feature flags, finding common interests, and validating skills, making Sets invaluable for modern development.