![]() In the React 18 Working Group we worked with library maintainers to create new APIs needed to support concurrent rendering for use cases specific to their use case in areas like styles, and external stores. The most notable change is that the children prop now needs to be listed explicitly when defining props, for example:įor more information, see the Automatic batching deep dive. The new types are safer and catch issues that used to be ignored by the type checker. ![]() If your project uses TypeScript, you will need to update your and dependencies to the latest versions. The following APIs will continue working, but with limited support for Suspense:įinally, this API will continue to work for rendering e-mails:įor more information on the changes to server rendering APIs, see the working group post on Upgrading to React 18 on the server, a deep dive on the new Suspense SSR Architecture, and Shaundai Person’s talk on Streaming Server Rendering with Suspense at React Conf 2021. We’re also introducing a new API to support streaming SSR with Suspense for modern edge runtime environments, such as Deno and Cloudflare workers: Instead, for streaming in Node environments, use: As part of these changes, we’re deprecating the old Node streaming API, which does not support incremental Suspense streaming on the server. ![]() In this release, we’re revamping our react-dom/server APIs to fully support Suspense on the server and Streaming SSR. If removing Strict Mode fixes your app, you can remove it during the upgrade, and then add it back (either at the top or for a part of the tree) after you fix the issues that it’s pointing out. Strict Mode has gotten stricter in React 18, and not all your components may be resilient to the new checks it adds in development mode. If your app doesn’t work after upgrading, check whether it’s wrapped in.
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