What are different methods to create an object?

0-2 years experience

1. 1How would you create a simple user settings object using an object literal?
2. 2If you need to create many similar product objects, which creation method would you pick and why?
3. 3What happens if you try to use the new operator with an object literal?

2-5 years experience

1. 1We have a widget constructor that seems to be leaking memory; how would you debug the object creation pattern?
2. 2Explain why using Object.create to set up a prototype chain can break when methods are later added to the prototype.
3. 3Given a feature that must serialize objects to JSON, which creation technique would you choose and why?

5-8 years experience

1. 1Design a factory module that can produce different chart objects; discuss trade‑offs between ES6 classes and Object.create.
2. 2How would you refactor a legacy codebase that uses constructor functions into modern class syntax without breaking existing consumers?
3. 3In a high‑traffic real‑time app that creates thousands of temporary objects per second, which object‑creation pattern would you use to minimise GC pressure and why?

8+ years experience

1. 1Our platform must support plugins written in both ES5 and ES6. How would you design a unified object‑creation strategy that eases migration?
2. 2Discuss the long‑term maintenance implications of mixing multiple object‑creation patterns in a large codebase and propose a policy.
3. 3If you were to introduce a code‑generation tool that emits object‑creation code, what patterns would you enforce to ensure consistency and performance at scale?