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Avoid direct React client API imports in the server graph #40686

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merged 3 commits into from Sep 19, 2022
Merged

Avoid direct React client API imports in the server graph #40686

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e35f851
avoid direct react client api imports in the server
shuding Sep 19, 2022
ff69d24
add comments
shuding Sep 19, 2022
e346251
Merge branch 'canary' into shu/47dd
shuding Sep 19, 2022
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16 changes: 12 additions & 4 deletions packages/next/pages/_document.tsx
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@@ -1,4 +1,4 @@
import React, { Component, ReactElement, ReactNode, useContext } from 'react'
import React, { ReactElement, ReactNode, useContext } from 'react'
import {
OPTIMIZED_FONT_PROVIDERS,
NEXT_BUILTIN_DOCUMENT,
Expand Down Expand Up @@ -353,7 +353,13 @@ function getAmpPath(ampPath: string, asPath: string): string {
return ampPath || `${asPath}${asPath.includes('?') ? '&' : '?'}amp=1`
}

export class Head extends Component<HeadProps> {
// Use `React.Component` to avoid errors from the RSC checks because
// it can't be imported directly in Server Components:
//
// import { Component } from 'react'
//
// More info: https://github.com/vercel/next.js/pull/40686
export class Head extends React.Component<HeadProps> {
static contextType = HtmlContext

context!: React.ContextType<typeof HtmlContext>
Expand Down Expand Up @@ -899,7 +905,7 @@ function handleDocumentScriptLoaderItems(
__NEXT_DATA__.scriptLoader = scriptLoaderItems
}

export class NextScript extends Component<OriginProps> {
export class NextScript extends React.Component<OriginProps> {
static contextType = HtmlContext

context!: React.ContextType<typeof HtmlContext>
Expand Down Expand Up @@ -1104,7 +1110,9 @@ export function Main() {
* `Document` component handles the initial `document` markup and renders only on the server side.
* Commonly used for implementing server side rendering for `css-in-js` libraries.
*/
export default class Document<P = {}> extends Component<DocumentProps & P> {
export default class Document<P = {}> extends React.Component<
DocumentProps & P
> {
/**
* `getInitialProps` hook returns the context object with the addition of `renderPage`.
* `renderPage` callback executes `React` rendering logic synchronously to support server-rendering wrappers
Expand Down
10 changes: 8 additions & 2 deletions packages/next/shared/lib/flush-effects.tsx
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@@ -1,8 +1,14 @@
import React, { createContext, useContext } from 'react'
import React, { useContext } from 'react'

export type FlushEffectsHook = (callbacks: () => React.ReactNode) => void

export const FlushEffectsContext = createContext<FlushEffectsHook | null>(
// Use `React.createContext` to avoid errors from the RSC checks because
// it can't be imported directly in Server Components:
//
// import { createContext } from 'react'
//
// More info: https://github.com/vercel/next.js/pull/40686
export const FlushEffectsContext = React.createContext<FlushEffectsHook | null>(
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null as any
)

Expand Down