Why Migrate to Vue 3?

Sahan Jayasuriya
3 min readFeb 20, 2023

Vue.js is one of the most popular JavaScript frameworks out there, providing a lightweight and performant approach to building reactive user interfaces. With the release of Vue.js 3, many developers are wondering whether it’s worth upgrading from Vue.js 2. In this article, we’ll explore some of the key benefits of upgrading to Vue.js 3 and why you should consider making the switch.

  1. Improved Performance: One of the most significant improvements in Vue.js 3 is its enhanced performance. Vue.js 3 is built with the aim of offering faster and more efficient rendering. The new version of Vue.js provides faster virtual DOM patching and rendering, which means it can process changes to the UI more efficiently. Vue.js 3 also comes with a new component-based API, which has been optimized for performance. With these improvements, Vue.js 3 is faster and more efficient than its predecessor, making it a worthy upgrade for those looking to optimize their web applications.
  2. Composition API: Vue.js 3 introduces a new Composition API that makes it easier to reuse code and manage the state in your application. The Composition API allows you to create reusable logic that can be shared across different components. This makes it easier to manage the state of your application and create more efficient code. Additionally, the Composition API can help to reduce the amount of boilerplate code needed for your application, making it easier to write and maintain.
  3. TypeScript Support: TypeScript is becoming increasingly popular in the JavaScript community, and Vue.js 3 is built with TypeScript in mind. Vue.js 3 includes improved support for TypeScript, making it easier to write type-safe code. This can help to reduce the number of bugs in your code and improve the overall maintainability of your application.
  4. Better Reactivity System: Vue.js 3 also comes with a new reactivity system that is designed to make it easier to manage the state of your application. With this new reactivity system, Vue.js 3 provides better support for reactive programming and makes it easier to create reactive components. This can help to simplify your code and make it more efficient, reducing the amount of work needed to create reactive components.
  5. Smaller Bundle Size: Another significant improvement in Vue.js 3 is the smaller bundle size. The new version of Vue.js has been optimized for a smaller bundle size, which means it takes up less space in your application. This can help to reduce the loading time of your application, making it more responsive and efficient.

In conclusion, upgrading to Vue.js 3 offers a range of benefits that can help to improve the performance, efficiency, and maintainability of your web application. With its improved performance, new Composition API, better TypeScript support, improved reactivity system, and smaller bundle size, Vue.js 3 is a worthy upgrade for those looking to take their web development to the next level. If you’re still using Vue.js 2, it’s time to start considering making the switch to Vue.js 3.

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Sahan Jayasuriya

A simple and humble person who enjoys mingling with nature. Career is developing software, but life is full of laughter and adventure.