Object.freeze
Object.freeze is a method in JavaScript that makes an object immutable by preventing new properties from being added, existing properties from being removed, and existing properties from being changed. It also prevents the prototype from being modified, ensuring the object's state remains constant after freezing. This is useful for creating read-only objects that cannot be accidentally altered in code.
Developers should use Object.freeze when they need to enforce immutability for objects, such as in functional programming paradigms, configuration objects, or constants that should not be modified at runtime. It helps prevent bugs by ensuring data integrity, especially in large applications or when sharing objects across different parts of code where unintended mutations could occur.