TypeScript enums: Usage, advantages, and best practices

TypeScript enums offer a way to group and name constants, making code more maintainable and less error-prone. They can be numeric, string-based, or a mix, each suited for specific use cases. Enums ensure type safety by preventing assignment of invalid values. Although they introduce extra JavaScript code and can expose values, alternatives like union types, object literals, and const enums can offer better performance and security in certain cases. Following best practices like using string enums and avoiding heterogeneous enums helps maintain clean and efficient TypeScript code.