vue

To write Vue 3 single-file components, use the `<script setup lang="ts">` macro to declare typed props and emits. This approach leverages TypeScript generics for defineProps and defineEmits, ensuring strongly-typed component interfaces and concise reactive code.

The best way to handle reactivity for large data structures in Vue 3 is using shallowRef instead of standard refs. This prevents deep reactivity tracking, optimizing rendering performance and reducing overhead when dealing with extensive object arrays.

Yes, Vue 3 script setup supports asynchronous operations through top-level await. When paired with the built-in Suspense component, this mechanism manages async setup states, displaying fallback content while resolving data dependencies.

To optimize list rendering performance in Vue 3, apply the v-memo directive within your v-for loops. This directive caches portions of the virtual DOM based on specified dependencies, skipping unnecessary re-renders when list item data remains unchanged.

Yes, you can use built-in components like Teleport and KeepAlive with the Composition API. They integrate seamlessly within `<script setup>` blocks, allowing you to manage view state caching and render DOM elements outside the component hierarchy.

Use effectScope to group and manually stop reactive effects, preventing memory leaks. Adjust watch flush modes like 'post' or 'sync' to precisely control when side effects execute relative to Vue's rendering cycle, avoiding layout thrashing.