Vue 3.5, an update to the popular “progressive” JavaScript framework, emphasizes improvements to the platform’s reactivity system, for better performance and improved memory usage.
Vue 3.5, described as a minor release with no breaking changes, was announced September 1. However, the release includes a major refactor of the reactivity system that boosts performance and significantly improves memory usage (-56%) with no behavior changes, Vue creator Evan You wrote in a blog post.
The Vue 3.5 release also resolves stale computed values and hanging memory issues caused by hanging computes during SSR (server-side rendering). Additionally, reactivity tracking has been optimized for large, deeply reactive arrays, making these operations as much as 10x faster in some cases. Reactive props destructure, meanwhile, has been stabilized and now is enabled by default. Variables destructured from a defineProps call in now are reactive. This simplifies declaring props with default values, You said.