AI solution for Interview Question on BFE.dev
141. What does Object.freeze() do?

Object.freeze() is a built-in method in JavaScript that allows developers to freeze an object, making it immutable; this means that no properties or elements of the object can be added, updated, or deleted. When an object is frozen, its properties are read-only.

This is useful when we want to ensure that an object is not modified after it has been created. This can be particularly helpful in preventing bugs caused by accidental modifications to an object.

Some use cases for Object.freeze() include:

1. To ensure that configuration objects are not accidentally changed
2. To prevent changes to constant values or hard-coded data
3. To protect objects that are being shared across different parts of an application
4. To create an immutable object that can be used as a key in a Map or Set data structure.