If you're working with a component-based frontend and prefer Vue, you might still be unsure which version to use despite the beta being on the market for a long time. While the advantages of the Composition API are now stable, what might we lose in older projects? Would you prefer Vue 2 or is it wiser to fully transition to Vue 3? What should we pay attention to when reviving an old project? Share your experiences!
Which one makes more sense: Vue 3 or Vue 2?
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The biggest pain point for me when using Vue 2 in old projects was the lack of Composition API support, which made organization difficult—especially in state management. For a long time, I had to deal with Vuex mutations, and code readability kept dropping. One of my teammates constantly brought up the advantages of the Composition API, and eventually, I started thinking, "Okay, we need a future-proof solution." Finally, we decided to give it a try and began migrating a new module to Vue 3.
The migration process to Vue 3 wasn’t as scary as I thought. With global APIs in Vue 2 reducing and shifting toward the Composition API, our code became more modular and testable. For example, a complex form component in an old project was broken down into several parts using the Composition API, making it much cleaner. Sure, getting ESLint configurations and VS Code extensions to work with the new version took some effort at first, but as tooling improved, things got easier. Also, starting to use TypeScript with Vue 3 gave us a huge boost in type safety.
So, is it better to stick with Vue 2 for old projects or jump straight to Vue 3? If the project is new and will be maintained long-term, migrating to Vue 3 is definitely the smarter choice. The flexibility and React-like code organization provided by the Composition API are especially valuable for large teams. However, if the project is already stable and not planned for major expansion anytime soon, staying on Vue 2 might make sense. For me, after the migration, the performance and development speed improvements in Vue 3 far outweighed the risks I took.