Vue.js 3 Release History and End-of-Life Status

Vue 3 Release Notes

Vue 3.0, also called "One Piece," marks the first stable major version of Vue.js after over two years of development. It brings faster runtime performance, smaller bundle sizes, better TypeScript support, and new APIs for handling large applications. The release includes contributions from 99 developers, over 2,600 commits, 628 pull requests, and more than 30 RFCs, all shaped by community feedback.

Major improvements cover rendering speed, code size reduction, and a modular design that supports tree-shaking. The Composition API helps organize logic better, while templates and reactivity get significant upgrades. Vue 3 also prepares a smooth upgrade path from Vue 2 with a special migration build.

Performance Improvements

Vue 3 runs much faster than Vue 2. It can render the first view up to 55% quicker, update data up to 133% faster, and use up to 54% less memory. These gains come from a smart system called compiler-informed Virtual DOM.

The template compiler now lifts static content out of repeated work, adds type hints for bindings during compilation, and simplifies dynamic parts. This means templates are optimized automatically, but developers can still use render functions for full control when needed.

Smaller Bundle Size

Vue 3 splits its core into independent modules. This structure allows build tools to remove unused code through tree-shaking. As a result, the final bundle can be up to 41% smaller than Vue 2.

Smaller bundles load faster, improving user experience—especially on mobile or slow networks. Every unused feature can be safely excluded without affecting the app.

Tree-Shaking Support

Thanks to the new modular package layout, build tools can detect and drop code that isn’t used. The compiler adds special hints about binding types in render functions, so tree-shaking works without losing performance benefits.

Developers import only what they need. This keeps apps lightweight while keeping all the speed improvements from the compiler.

Composition API

The Composition API is a powerful new feature built on Vue’s reactivity system. It lets developers group related logic into reusable functions—similar to React hooks. This improves code organization, TypeScript type inference, and logic reuse across components.

For Vue 2 users, the @vue/composition-api plugin brings the same API today. Libraries like VueUse already support both Vue 2 and Vue 3, making the transition easier.

Template Optimizations

Vue 3’s template compiler works smarter. It hoists static nodes so they’re created once and reused. Bindings get type information at compile time, and dynamic sections are flattened to reduce runtime work.

These changes speed up rendering without requiring manual render functions for most cases. Templates remain simple and declarative, yet highly efficient.

Global API Changes

Vue 3 exposes its core through small, focused modules. You can import just reactivity, or the DOM renderer, or both. When using a script tag, the global Vue object still works as before.

This design supports tree-shaking and custom renderers, making Vue flexible for different platforms while keeping the classic setup familiar.

Standalone Reactivity

The reactivity system is now available as a separate package: @vue/reactivity. It works outside Vue—with any template engine or even in non-UI code.

It stays fully compatible with Vue 2 behavior, so existing reactive logic keeps working during upgrades.

TypeScript Support

Vue 3 is written in TypeScript with automatically generated type definitions. The Composition API offers excellent type inference, even for complex logic.

Tools like Vetur now check types in templates and props. Full TSX support lets you write components with JSX and TypeScript together.

Migration Path

A migration build is in development to help upgrade from Vue 2. It will act like Vue 2 but warn about deprecated APIs. An IE11-compatible version is also planned for late 2020.

Until then, direct migration isn’t supported. The team follows a careful rollout: stabilize Vue 3 for new projects first, then update Vue Router, Vuex, and devtools.

Experimental Features

Vue 3 includes early versions of new Single-File Component features for testing. The <Suspense> component helps manage async loading (like data fetching) and is being improved with Nuxt 3.

Future work includes finishing the migration build, adding IE11 support, updating devtools, and improving template type checking.

Vue 2 End-of-Life Plan

Vue 2 will get one final update—version 2.7—in early 2021. It will include selected Vue 3 features for easier upgrades. After that, Vue 2 enters long-term support with critical fixes only.