Vue.js 2.7: What's New, Release History & EOL Status

What Is New in Vue.js 2.7

Vue 2.7 "Naruto" is a feature backport release, bringing key Vue 3 capabilities to Vue 2 for projects that need to stay on the older major version a while longer. It's a bridge, not a rewrite.

In practice, this means you can start writing Composition API code in your Vue 2 projects today, which makes future migration smoother.

How does the Composition API work in Vue 2.7?

The Composition API is now natively available in Vue 2.7 without a separate plugin. You can import functions like `ref`, `reactive`, and `computed` directly from `vue`.

<script>
import { ref, computed } from 'vue'
export default {
  setup() {
    const count = ref(0)
    const double = computed(() => count.value * 2)
    return { count, double }
  }
}
</script>

This matters because it provides a more flexible way to organize component logic, especially for complex components. It's the same API design from Vue 3, so the knowledge transfers directly.

What is the benefit of <script setup>?

<script setup> is a compile-time syntactic sugar for the Composition API, drastically reducing boilerplate. Top-level bindings are automatically exposed to the template.

<script setup>
import { ref } from 'vue'
const msg = ref('Hello World!')
</script>

In practice, it leads to cleaner and more concise Single File Components. This syntax was one of the most requested features from Vue 3, and its inclusion here is a major productivity boost for Vue 2 codebases.

Is TypeScript support better now?

Yes, Vue 2.7 core includes improved type definitions that work with the new Composition API features. This provides better type inference for `defineComponent`, `props`, and `emits` declarations.

You don't need `@vue/composition-api` types anymore. The built-in types are more accurate and aligned with Vue 3's behavior. For most setups, TypeScript just works with less configuration hassle.

What changed in the build tooling?

The default template compiler is slightly stricter regarding expression parsing. Specifically, expressions using `||` and `&&` operators must be wrapped in parentheses when used in certain directive expressions.

<!-- May break in 2.7 -->
<div :class="'btn ' + isPrimary || isSecondary ? 'active' : ''"></div>

<!-- Fixed in 2.7 -->
<div :class="'btn ' + (isPrimary || isSecondary ? 'active' : '')"></div>

You'll need to update `vue-eslint-parser` and `eslint-plugin-vue` to the latest versions to handle this new syntax and the new features correctly.