What is the primary purpose of ES6 classes in JavaScript?
ES6 classes primarily provide syntactic sugar over JavaScript's existing prototype-based inheritance: 1) They don't introduce new object-oriented inheritance model, 2) Under the hood, they still use prototype-based mechanisms, 3) They make the syntax more familiar to developers coming from class-based languages, 4) They streamline common patterns that were verbose with pre-ES6 approaches, 5) They unify the various ways of implementing object-oriented programming that existed before, 6) They make the code more readable and maintainable while maintaining JavaScript's prototype nature.