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docs: update styling support for streaming #35375

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merged 4 commits into from Mar 26, 2022
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4 changes: 3 additions & 1 deletion docs/advanced-features/react-18/streaming.md
Expand Up @@ -68,4 +68,6 @@ Currently, data fetching within `Suspense` boundaries on the server side is not

#### Styling

The Next.js team is working on support for `styled-jsx` and CSS modules in streaming SSR. Stay tuned for updates.
Inline styles, Global CSS, CSS modules and Next.js built-in `styled-jsx` are supported with streaming. The Next.js team is working on the guide of integrating other CSS-in-JS solutions in streaming SSR. Stay tuned for updates.

> Note: The styling code should be only placed in client components, not server components, when using React Server Components
8 changes: 4 additions & 4 deletions errors/client-flush-effects.md
@@ -1,16 +1,16 @@
# `useFlushEffects` can not be called on the client
# `unstable_useFlushEffects` can not be called on the client

#### Why This Error Occurred

The `useFlushEffects` hook was executed while rendering a component on the client, or in another unsupported environment.
The `unstable_useFlushEffects` hook was executed while rendering a component on the client, or in another unsupported environment.

#### Possible Ways to Fix It

The `useFlushEffects` hook can only be called while _server rendering a client component_. As a best practice, we recommend creating a wrapper hook:
The `unstable_useFlushEffects` hook can only be called while _server rendering a client component_. As a best practice, we recommend creating a wrapper hook:

```jsx
// lib/use-style-libraries.js
import { useFlushEffects } from 'next/streaming'
import { unstable_useFlushEffects as useFlushEffects } from 'next/streaming'

export default function useStyleLibraries() {
if (typeof window === 'undefined') {
Expand Down
6 changes: 3 additions & 3 deletions errors/multiple-flush-effects.md
@@ -1,9 +1,9 @@
# The `useFlushEffects` hook cannot be used more than once.
# The `unstable_useFlushEffects` hook cannot be used more than once.

#### Why This Error Occurred

The `useFlushEffects` hook is being used more than once while a page is being rendered.
The `unstable_useFlushEffects` hook is being used more than once while a page is being rendered.

#### Possible Ways to Fix It

The `useFlushEffects` hook should only be called inside the body of the `pages/_app` component, before returning any `<Suspense>` boundaries. Restructure your application to prevent extraneous calls.
The `unstable_useFlushEffects` hook should only be called inside the body of the `pages/_app` component, before returning any `<Suspense>` boundaries. Restructure your application to prevent extraneous calls.