Object.freeze vs Object.preventExtensions

Developers should use Object meets developers should use object. Here's our take.

Object.freeze

Nice Pick

Developers should use Object

Pros

• 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
• Related to: javascript, immutability

Cons

• Specific tradeoffs depend on your use case

Object.preventExtensions

Developers should use Object

Pros

• preventExtensions when they need to ensure that an object's structure remains fixed, such as in configuration objects, API responses, or when implementing certain design patterns like sealed objects
• Related to: javascript, object-seal

Cons

• Specific tradeoffs depend on your use case

The Verdict

Use Object.freeze if: You want 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 and can live with specific tradeoffs depend on your use case.

Use Object.preventExtensions if: You prioritize preventextensions when they need to ensure that an object's structure remains fixed, such as in configuration objects, api responses, or when implementing certain design patterns like sealed objects over what Object.freeze offers.

The Bottom Line

Object.freeze wins

Developers should use Object