Fix ReadableStream demos on iOS Safari - #8613
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August 20, 2026 00:19
Size changesDetails📦 Next.js Bundle Analysis for react-devThis analysis was generated by the Next.js Bundle Analysis action. 🤖 This PR introduced no changes to the JavaScript bundle! 🙌 |
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Summary
for await...ofwithReadableStream.getReader()in all five browser-run stream demosTextDecoderafter the stream completeshttps://react-ke9zjr6ve-react-foundation.vercel.app/
Why
WebKit only added async iteration support for
ReadableStreamin Safari 26.4. On older iOS versions, clicking Render the page disables the button and then fails before writing content to the preview iframe. The reader API is supported on older Safari versions and is already used elsewhere in the docs.WebKit release notes: https://webkit.org/blog/17862/webkit-features-for-safari-26-4/#readablestream-async-iteration
Validation
yarn eslint src/content/reference/react-dom/browser.md src/content/reference/react/Suspense.md src/content/reference/react/use.md src/content/reference/react-dom/server/resume.mdyarn lint-heading-idsfor await...ofusage undersrc/contentbrowsersandbox end to end: the rendered page displays the article editor with no console warnings or errors