#react19
3 posts from May 10, 2024 to Jan 9, 2026, newest first.
Understanding React's useEffectEvent: A Complete Guide to Solving Stale Closures
React 19.2's useEffectEvent hook eliminates the useRef workaround pattern for accessing latest state in Effects. Learn when and how to use it.
Replacing Legacy throw in React 19 with Suspense and use
React once used thrown Promises for Suspense. .use() is recommended now, but legacy throwing is still supported.
Running React 19 From a CDN and using esm.sh
This blog explains updating to React 19 using esm.sh, transitioning from UMD to ESM modules. It includes changes in CDN usage, detailed esm.sh functionality, and how to find and use the correct React…