What are the performance differences between Object.assign and the spread operator?

What are the performance differences between Object.assign and the spread operator?

Both Object.assign and the spread operator are used to copy properties from one object to another, but they have different performance characteristics. Object.assign is generally faster for shallow copies, while the spread operator can be more readable and concise.

Can you provide some benchmarks to illustrate the differences?

Sure! Benchmarks show that Object.assign can be faster in scenarios with fewer properties, but as the number of properties increases, the spread operator's performance can be comparable or even better due to optimizations in modern JavaScript engines.

Are there any limitations to using either method?

Yes, Object.assign does not handle deep cloning, while the spread operator also has limitations with non-enumerable properties and symbols.

Which one should I use in my project?

It depends on your specific use case. If you need a simple shallow copy, either will work, but for readability and modern syntax, the spread operator is often preferred.