Vue 3 has been out this year and after using it on a few projects, here’s my honest take on what improved compared to Vue 2.

1. Composition API: Better Way to Organize Code

The biggest change for me is the Composition API. In Vue 2, logic was spread across different options (data, methods, computed, etc.), which could get messy in bigger components.

With the Composition API, you can group related logic together in one place. This makes it much easier to understand and reuse code, especially when components start getting complex.

What I’ve noticed:

  • Code feels cleaner and easier to maintain as projects grow.
  • It’s simpler to extract and reuse logic between components.
  • The overall structure of larger components becomes more organized.

It’s not that the Options API was bad, but the Composition API gives you more flexibility when things get bigger.

2. Reactivity System: More Predictable and Efficient

Vue 3 uses a new reactivity system based on JavaScript Proxies. In my experience, it feels more reliable than Vue 2’s reactivity.

Updates are more consistent, and it’s easier to understand why something is (or isn’t) reacting. It also performs better, especially when dealing with large amounts of data or frequent updates.

What I’ve noticed:

  • Fewer unexpected reactivity bugs.
  • Better performance in apps with lots of dynamic data.
  • Easier to debug when something doesn’t update as expected.

This improvement is noticeable once you start building more complex interfaces.

3. TypeScript Support: Much Better Experience

Vue 3 has much stronger TypeScript support out of the box. In Vue 2, using TypeScript often felt like fighting against the framework. Vue 3 makes it feel more natural.

What I’ve noticed:

  • Better autocomplete and type checking in editors.
  • Fewer runtime errors because problems are caught earlier.
  • It’s easier to work in larger codebases with multiple developers.

If you’re already using TypeScript (or planning to), Vue 3 removes a lot of the friction that existed in Vue 2.

4. Performance and Smaller Size

Vue 3 is smaller and faster than Vue 2. The framework itself has a smaller runtime, and features like tree-shaking help reduce bundle size.

In practice, I’ve seen slightly faster load times and better performance, especially on larger applications. It’s not a massive jump in every case, but it adds up, particularly if you care about performance.

The improved DevTools and debugging experience also make development smoother.

5. Overall Developer Experience

Beyond the big features, Vue 3 just feels more polished. The documentation is better, the ecosystem has matured, and there’s a clearer direction for how to build things.

Many of the small pain points from Vue 2 have been addressed. Things that used to require workarounds now feel more straightforward.

My honest feedback

Vue 3 isn’t a complete rewrite of how you think about Vue, but it does feel like a meaningful upgrade in several important areas:

  • Composition API makes code easier to organize and maintain.
  • Reactivity is more predictable and performant.
  • TypeScript support is significantly better.
  • The framework is smaller and more modern.