What are the reactivity improvements in Vue 3?

What are the reactivity improvements in Vue 3?

Vue 3 introduces a new reactivity system based on Proxies, which enhances performance and allows for better tracking of dependencies.

How does the Proxy-based system differ from the Object.defineProperty method?

The Proxy-based system allows for more flexible and efficient reactivity, as it can intercept operations on objects directly, unlike Object.defineProperty which requires explicit property definitions.

Can you explain how this affects performance in large applications?

In large applications, the new system reduces the overhead of tracking changes, leading to faster updates and rendering, especially in complex components.

Are there any limitations or drawbacks to the new reactivity system?

While the new system is powerful, it may have some compatibility issues with libraries that rely on the old reactivity model, and developers need to be aware of how to handle reactivity in nested objects.