#React React 19.2 新增 <Activity> 组件，可在保留状态的前提下以最低优先级渲染隐藏内容，显著降低主线程压力并加速交互响应。
配套推出的 Performance Tracks 把 React 内部任务、组件渲染与 SSR 耗时一次性可视化，让开发者快速定位并消除拖慢 INP 的瓶颈。

https://calendar.perfplanet.com/2025/react-19-2-further-advances-inp-optimization/
Web Performance Calendar
React 19.2. Further Advances INP Optimization
React 19.2. Further Advances INP Optimization
Last year, in the article “5 tips to effectively optimize INP in React,” we focused on what developers often underestimate when optimizing React.

React is not automatically fast, and long JavaScript tasks can arise from perfectly common constructs. A larger…
 
 
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