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render.tsx
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render.tsx
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import type { IncomingMessage, ServerResponse } from 'http'
import type { ParsedUrlQuery } from 'querystring'
import type { NextRouter } from '../shared/lib/router/router'
import type { HtmlProps } from '../shared/lib/html-context'
import type { DomainLocale } from './config'
import type {
AppType,
DocumentInitialProps,
DocumentType,
DocumentProps,
DocumentContext,
NextComponentType,
RenderPage,
RenderPageResult,
} from '../shared/lib/utils'
import type { ImageConfigComplete } from '../shared/lib/image-config'
import type { Redirect } from '../lib/load-custom-routes'
import type { NextApiRequestCookies, __ApiPreviewProps } from './api-utils'
import type { FontManifest, FontConfig } from './font-utils'
import type { LoadComponentsReturnType, ManifestItem } from './load-components'
import type {
GetServerSideProps,
GetStaticProps,
PreviewData,
ServerRuntime,
} from 'next/types'
import type { UnwrapPromise } from '../lib/coalesced-function'
import type { ReactReadableStream } from './stream-utils/node-web-streams-helper'
import type { ClientReferenceManifest } from '../build/webpack/plugins/flight-manifest-plugin'
import type { NextFontManifest } from '../build/webpack/plugins/next-font-manifest-plugin'
import React from 'react'
import ReactDOMServer from 'react-dom/server.browser'
import { StyleRegistry, createStyleRegistry } from 'styled-jsx'
import {
GSP_NO_RETURNED_VALUE,
GSSP_COMPONENT_MEMBER_ERROR,
GSSP_NO_RETURNED_VALUE,
STATIC_STATUS_PAGE_GET_INITIAL_PROPS_ERROR,
SERVER_PROPS_GET_INIT_PROPS_CONFLICT,
SERVER_PROPS_SSG_CONFLICT,
SSG_GET_INITIAL_PROPS_CONFLICT,
UNSTABLE_REVALIDATE_RENAME_ERROR,
} from '../lib/constants'
import {
COMPILER_NAMES,
NEXT_BUILTIN_DOCUMENT,
SERVER_PROPS_ID,
STATIC_PROPS_ID,
STATIC_STATUS_PAGES,
} from '../shared/lib/constants'
import { isSerializableProps } from '../lib/is-serializable-props'
import { isInAmpMode } from '../shared/lib/amp-mode'
import { AmpStateContext } from '../shared/lib/amp-context'
import { defaultHead } from '../shared/lib/head'
import { HeadManagerContext } from '../shared/lib/head-manager-context'
import Loadable from '../shared/lib/loadable'
import { LoadableContext } from '../shared/lib/loadable-context'
import { RouterContext } from '../shared/lib/router-context'
import { isDynamicRoute } from '../shared/lib/router/utils/is-dynamic'
import {
ComponentsEnhancer,
getDisplayName,
isResSent,
loadGetInitialProps,
} from '../shared/lib/utils'
import { HtmlContext } from '../shared/lib/html-context'
import { normalizePagePath } from '../shared/lib/page-path/normalize-page-path'
import { denormalizePagePath } from '../shared/lib/page-path/denormalize-page-path'
import { getRequestMeta, NextParsedUrlQuery } from './request-meta'
import { allowedStatusCodes, getRedirectStatus } from '../lib/redirect-status'
import RenderResult, { type RenderResultMetadata } from './render-result'
import isError from '../lib/is-error'
import {
streamFromArray,
streamToString,
chainStreams,
createBufferedTransformStream,
renderToInitialStream,
continueFromInitialStream,
} from './stream-utils/node-web-streams-helper'
import { ImageConfigContext } from '../shared/lib/image-config-context'
import stripAnsi from 'next/dist/compiled/strip-ansi'
import { stripInternalQueries } from './internal-utils'
import {
adaptForAppRouterInstance,
adaptForSearchParams,
PathnameContextProviderAdapter,
} from '../shared/lib/router/adapters'
import { AppRouterContext } from '../shared/lib/app-router-context'
import { SearchParamsContext } from '../shared/lib/hooks-client-context'
import { getTracer } from './lib/trace/tracer'
import { RenderSpan } from './lib/trace/constants'
import { PageNotFoundError } from '../shared/lib/utils'
import { ReflectAdapter } from './web/spec-extension/adapters/reflect'
let tryGetPreviewData: typeof import('./api-utils/node').tryGetPreviewData
let warn: typeof import('../build/output/log').warn
let postProcessHTML: typeof import('./post-process').postProcessHTML
const DOCTYPE = '<!DOCTYPE html>'
if (process.env.NEXT_RUNTIME !== 'edge') {
require('./node-polyfill-web-streams')
tryGetPreviewData = require('./api-utils/node').tryGetPreviewData
warn = require('../build/output/log').warn
postProcessHTML = require('./post-process').postProcessHTML
} else {
warn = console.warn.bind(console)
postProcessHTML = async (_pathname: string, html: string) => html
}
function noRouter() {
const message =
'No router instance found. you should only use "next/router" inside the client side of your app. https://nextjs.org/docs/messages/no-router-instance'
throw new Error(message)
}
async function renderToString(element: React.ReactElement) {
const renderStream = await ReactDOMServer.renderToReadableStream(element)
await renderStream.allReady
return streamToString(renderStream)
}
class ServerRouter implements NextRouter {
route: string
pathname: string
query: ParsedUrlQuery
asPath: string
basePath: string
events: any
isFallback: boolean
locale?: string
isReady: boolean
locales?: string[]
defaultLocale?: string
domainLocales?: DomainLocale[]
isPreview: boolean
isLocaleDomain: boolean
constructor(
pathname: string,
query: ParsedUrlQuery,
as: string,
{ isFallback }: { isFallback: boolean },
isReady: boolean,
basePath: string,
locale?: string,
locales?: string[],
defaultLocale?: string,
domainLocales?: DomainLocale[],
isPreview?: boolean,
isLocaleDomain?: boolean
) {
this.route = pathname.replace(/\/$/, '') || '/'
this.pathname = pathname
this.query = query
this.asPath = as
this.isFallback = isFallback
this.basePath = basePath
this.locale = locale
this.locales = locales
this.defaultLocale = defaultLocale
this.isReady = isReady
this.domainLocales = domainLocales
this.isPreview = !!isPreview
this.isLocaleDomain = !!isLocaleDomain
}
push(): any {
noRouter()
}
replace(): any {
noRouter()
}
reload() {
noRouter()
}
back() {
noRouter()
}
forward(): void {
noRouter()
}
prefetch(): any {
noRouter()
}
beforePopState() {
noRouter()
}
}
function enhanceComponents(
options: ComponentsEnhancer,
App: AppType,
Component: NextComponentType
): {
App: AppType
Component: NextComponentType
} {
// For backwards compatibility
if (typeof options === 'function') {
return {
App,
Component: options(Component),
}
}
return {
App: options.enhanceApp ? options.enhanceApp(App) : App,
Component: options.enhanceComponent
? options.enhanceComponent(Component)
: Component,
}
}
function renderPageTree(
App: AppType,
Component: NextComponentType,
props: any
) {
return <App Component={Component} {...props} />
}
export type RenderOptsPartial = {
buildId: string
canonicalBase: string
runtimeConfig?: { [key: string]: any }
assetPrefix?: string
err?: Error | null
nextExport?: boolean
dev?: boolean
ampPath?: string
ErrorDebug?: React.ComponentType<{ error: Error }>
ampValidator?: (html: string, pathname: string) => Promise<void>
ampSkipValidation?: boolean
ampOptimizerConfig?: { [key: string]: any }
isDataReq?: boolean
params?: ParsedUrlQuery
previewProps: __ApiPreviewProps
basePath: string
unstable_runtimeJS?: false
unstable_JsPreload?: false
optimizeFonts: FontConfig
fontManifest?: FontManifest
optimizeCss: any
nextConfigOutput?: 'standalone' | 'export'
nextScriptWorkers: any
assetQueryString?: string
resolvedUrl?: string
resolvedAsPath?: string
clientReferenceManifest?: ClientReferenceManifest
serverCSSManifest?: any
nextFontManifest?: NextFontManifest
distDir?: string
locale?: string
locales?: string[]
defaultLocale?: string
domainLocales?: DomainLocale[]
disableOptimizedLoading?: boolean
supportsDynamicHTML: boolean
isBot?: boolean
runtime?: ServerRuntime
serverComponents?: boolean
customServer?: boolean
crossOrigin?: 'anonymous' | 'use-credentials' | '' | undefined
images: ImageConfigComplete
largePageDataBytes?: number
isOnDemandRevalidate?: boolean
strictNextHead: boolean
isDraftMode?: boolean
deploymentId?: string
}
export type RenderOpts = LoadComponentsReturnType & RenderOptsPartial
const invalidKeysMsg = (
methodName: 'getServerSideProps' | 'getStaticProps',
invalidKeys: string[]
) => {
const docsPathname = `invalid-${methodName.toLocaleLowerCase()}-value`
return (
`Additional keys were returned from \`${methodName}\`. Properties intended for your component must be nested under the \`props\` key, e.g.:` +
`\n\n\treturn { props: { title: 'My Title', content: '...' } }` +
`\n\nKeys that need to be moved: ${invalidKeys.join(', ')}.` +
`\nRead more: https://nextjs.org/docs/messages/${docsPathname}`
)
}
function checkRedirectValues(
redirect: Redirect,
req: IncomingMessage,
method: 'getStaticProps' | 'getServerSideProps'
) {
const { destination, permanent, statusCode, basePath } = redirect
let errors: string[] = []
const hasStatusCode = typeof statusCode !== 'undefined'
const hasPermanent = typeof permanent !== 'undefined'
if (hasPermanent && hasStatusCode) {
errors.push(`\`permanent\` and \`statusCode\` can not both be provided`)
} else if (hasPermanent && typeof permanent !== 'boolean') {
errors.push(`\`permanent\` must be \`true\` or \`false\``)
} else if (hasStatusCode && !allowedStatusCodes.has(statusCode!)) {
errors.push(
`\`statusCode\` must undefined or one of ${[...allowedStatusCodes].join(
', '
)}`
)
}
const destinationType = typeof destination
if (destinationType !== 'string') {
errors.push(
`\`destination\` should be string but received ${destinationType}`
)
}
const basePathType = typeof basePath
if (basePathType !== 'undefined' && basePathType !== 'boolean') {
errors.push(
`\`basePath\` should be undefined or a false, received ${basePathType}`
)
}
if (errors.length > 0) {
throw new Error(
`Invalid redirect object returned from ${method} for ${req.url}\n` +
errors.join(' and ') +
'\n' +
`See more info here: https://nextjs.org/docs/messages/invalid-redirect-gssp`
)
}
}
export const deserializeErr = (serializedErr: any) => {
if (
!serializedErr ||
typeof serializedErr !== 'object' ||
!serializedErr.stack
) {
return serializedErr
}
let ErrorType: any = Error
if (serializedErr.name === 'PageNotFoundError') {
ErrorType = PageNotFoundError
}
const err = new ErrorType(serializedErr.message)
err.stack = serializedErr.stack
err.name = serializedErr.name
;(err as any).digest = serializedErr.digest
if (process.env.NEXT_RUNTIME !== 'edge') {
const { decorateServerError } =
require('next/dist/compiled/@next/react-dev-overlay/dist/middleware') as typeof import('next/dist/compiled/@next/react-dev-overlay/dist/middleware')
decorateServerError(err, serializedErr.source || 'server')
}
return err
}
export function errorToJSON(err: Error) {
let source: typeof COMPILER_NAMES.server | typeof COMPILER_NAMES.edgeServer =
'server'
if (process.env.NEXT_RUNTIME !== 'edge') {
source =
require('next/dist/compiled/@next/react-dev-overlay/dist/middleware').getErrorSource(
err
) || 'server'
}
return {
name: err.name,
source,
message: stripAnsi(err.message),
stack: err.stack,
digest: (err as any).digest,
}
}
function serializeError(
dev: boolean | undefined,
err: Error
): Error & {
statusCode?: number
source?: typeof COMPILER_NAMES.server | typeof COMPILER_NAMES.edgeServer
} {
if (dev) {
return errorToJSON(err)
}
return {
name: 'Internal Server Error.',
message: '500 - Internal Server Error.',
statusCode: 500,
}
}
export async function renderToHTML(
req: IncomingMessage,
res: ServerResponse,
pathname: string,
query: NextParsedUrlQuery,
renderOpts: RenderOpts
): Promise<RenderResult> {
const renderResultMeta: RenderResultMetadata = {}
// In dev we invalidate the cache by appending a timestamp to the resource URL.
// This is a workaround to fix https://github.com/vercel/next.js/issues/5860
// TODO: remove this workaround when https://bugs.webkit.org/show_bug.cgi?id=187726 is fixed.
renderResultMeta.assetQueryString = renderOpts.dev
? renderOpts.assetQueryString || `?ts=${Date.now()}`
: ''
// if deploymentId is provided we append it to all asset requests
if (renderOpts.deploymentId) {
renderResultMeta.assetQueryString += `${
renderResultMeta.assetQueryString ? '&' : '?'
}dpl=${renderOpts.deploymentId}`
}
// don't modify original query object
query = Object.assign({}, query)
const {
err,
dev = false,
ampPath = '',
pageConfig = {},
buildManifest,
reactLoadableManifest,
ErrorDebug,
getStaticProps,
getStaticPaths,
getServerSideProps,
isDataReq,
params,
previewProps,
basePath,
images,
runtime: globalRuntime,
App,
} = renderOpts
const assetQueryString = renderResultMeta.assetQueryString
let Document = renderOpts.Document
// Component will be wrapped by ServerComponentWrapper for RSC
let Component: React.ComponentType<{}> | ((props: any) => JSX.Element) =
renderOpts.Component
const OriginComponent = Component
let serverComponentsInlinedTransformStream: TransformStream<
Uint8Array,
Uint8Array
> | null = null
const isFallback = !!query.__nextFallback
const notFoundSrcPage = query.__nextNotFoundSrcPage
// next internal queries should be stripped out
stripInternalQueries(query)
const isSSG = !!getStaticProps
const isBuildTimeSSG = isSSG && renderOpts.nextExport
const defaultAppGetInitialProps =
App.getInitialProps === (App as any).origGetInitialProps
const hasPageGetInitialProps = !!(Component as any)?.getInitialProps
const hasPageScripts = (Component as any)?.unstable_scriptLoader
const pageIsDynamic = isDynamicRoute(pathname)
const defaultErrorGetInitialProps =
pathname === '/_error' &&
(Component as any).getInitialProps ===
(Component as any).origGetInitialProps
if (
renderOpts.nextExport &&
hasPageGetInitialProps &&
!defaultErrorGetInitialProps
) {
warn(
`Detected getInitialProps on page '${pathname}'` +
` while running export. It's recommended to use getStaticProps` +
` which has a more correct behavior for static exporting.` +
`\nRead more: https://nextjs.org/docs/messages/get-initial-props-export`
)
}
const isAutoExport =
!hasPageGetInitialProps &&
defaultAppGetInitialProps &&
!isSSG &&
!getServerSideProps
if (hasPageGetInitialProps && isSSG) {
throw new Error(SSG_GET_INITIAL_PROPS_CONFLICT + ` ${pathname}`)
}
if (hasPageGetInitialProps && getServerSideProps) {
throw new Error(SERVER_PROPS_GET_INIT_PROPS_CONFLICT + ` ${pathname}`)
}
if (getServerSideProps && isSSG) {
throw new Error(SERVER_PROPS_SSG_CONFLICT + ` ${pathname}`)
}
if (getServerSideProps && renderOpts.nextConfigOutput === 'export') {
throw new Error(
'getServerSideProps cannot be used with "output: export". See more info here: https://nextjs.org/docs/advanced-features/static-html-export'
)
}
if (getStaticPaths && !pageIsDynamic) {
throw new Error(
`getStaticPaths is only allowed for dynamic SSG pages and was found on '${pathname}'.` +
`\nRead more: https://nextjs.org/docs/messages/non-dynamic-getstaticpaths-usage`
)
}
if (!!getStaticPaths && !isSSG) {
throw new Error(
`getStaticPaths was added without a getStaticProps in ${pathname}. Without getStaticProps, getStaticPaths does nothing`
)
}
if (isSSG && pageIsDynamic && !getStaticPaths) {
throw new Error(
`getStaticPaths is required for dynamic SSG pages and is missing for '${pathname}'.` +
`\nRead more: https://nextjs.org/docs/messages/invalid-getstaticpaths-value`
)
}
let asPath: string = renderOpts.resolvedAsPath || (req.url as string)
if (dev) {
const { isValidElementType } = require('next/dist/compiled/react-is')
if (!isValidElementType(Component)) {
throw new Error(
`The default export is not a React Component in page: "${pathname}"`
)
}
if (!isValidElementType(App)) {
throw new Error(
`The default export is not a React Component in page: "/_app"`
)
}
if (!isValidElementType(Document)) {
throw new Error(
`The default export is not a React Component in page: "/_document"`
)
}
if (isAutoExport || isFallback) {
// remove query values except ones that will be set during export
query = {
...(query.amp
? {
amp: query.amp,
}
: {}),
}
asPath = `${pathname}${
// ensure trailing slash is present for non-dynamic auto-export pages
req.url!.endsWith('/') && pathname !== '/' && !pageIsDynamic ? '/' : ''
}`
req.url = pathname
}
if (pathname === '/404' && (hasPageGetInitialProps || getServerSideProps)) {
throw new Error(
`\`pages/404\` ${STATIC_STATUS_PAGE_GET_INITIAL_PROPS_ERROR}`
)
}
if (
STATIC_STATUS_PAGES.includes(pathname) &&
(hasPageGetInitialProps || getServerSideProps)
) {
throw new Error(
`\`pages${pathname}\` ${STATIC_STATUS_PAGE_GET_INITIAL_PROPS_ERROR}`
)
}
}
for (const methodName of [
'getStaticProps',
'getServerSideProps',
'getStaticPaths',
]) {
if ((Component as any)?.[methodName]) {
throw new Error(
`page ${pathname} ${methodName} ${GSSP_COMPONENT_MEMBER_ERROR}`
)
}
}
await Loadable.preloadAll() // Make sure all dynamic imports are loaded
let isPreview: boolean | undefined = undefined
let previewData: PreviewData
if (
(isSSG || getServerSideProps) &&
!isFallback &&
process.env.NEXT_RUNTIME !== 'edge'
) {
// Reads of this are cached on the `req` object, so this should resolve
// instantly. There's no need to pass this data down from a previous
// invoke.
previewData = tryGetPreviewData(req, res, previewProps)
isPreview = previewData !== false
}
// url will always be set
const routerIsReady = !!(
getServerSideProps ||
hasPageGetInitialProps ||
(!defaultAppGetInitialProps && !isSSG)
)
const router = new ServerRouter(
pathname,
query,
asPath,
{
isFallback: isFallback,
},
routerIsReady,
basePath,
renderOpts.locale,
renderOpts.locales,
renderOpts.defaultLocale,
renderOpts.domainLocales,
isPreview,
getRequestMeta(req, '__nextIsLocaleDomain')
)
const appRouter = adaptForAppRouterInstance(router)
let scriptLoader: any = {}
const jsxStyleRegistry = createStyleRegistry()
const ampState = {
ampFirst: pageConfig.amp === true,
hasQuery: Boolean(query.amp),
hybrid: pageConfig.amp === 'hybrid',
}
// Disable AMP under the web environment
const inAmpMode = process.env.NEXT_RUNTIME !== 'edge' && isInAmpMode(ampState)
let head: JSX.Element[] = defaultHead(inAmpMode)
const reactLoadableModules: string[] = []
let initialScripts: any = {}
if (hasPageScripts) {
initialScripts.beforeInteractive = []
.concat(hasPageScripts())
.filter((script: any) => script.props.strategy === 'beforeInteractive')
.map((script: any) => script.props)
}
const AppContainer = ({ children }: { children: JSX.Element }) => (
<AppRouterContext.Provider value={appRouter}>
<SearchParamsContext.Provider value={adaptForSearchParams(router)}>
<PathnameContextProviderAdapter
router={router}
isAutoExport={isAutoExport}
>
<RouterContext.Provider value={router}>
<AmpStateContext.Provider value={ampState}>
<HeadManagerContext.Provider
value={{
updateHead: (state) => {
head = state
},
updateScripts: (scripts) => {
scriptLoader = scripts
},
scripts: initialScripts,
mountedInstances: new Set(),
}}
>
<LoadableContext.Provider
value={(moduleName) => reactLoadableModules.push(moduleName)}
>
<StyleRegistry registry={jsxStyleRegistry}>
<ImageConfigContext.Provider value={images}>
{children}
</ImageConfigContext.Provider>
</StyleRegistry>
</LoadableContext.Provider>
</HeadManagerContext.Provider>
</AmpStateContext.Provider>
</RouterContext.Provider>
</PathnameContextProviderAdapter>
</SearchParamsContext.Provider>
</AppRouterContext.Provider>
)
// The `useId` API uses the path indexes to generate an ID for each node.
// To guarantee the match of hydration, we need to ensure that the structure
// of wrapper nodes is isomorphic in server and client.
// TODO: With `enhanceApp` and `enhanceComponents` options, this approach may
// not be useful.
// https://github.com/facebook/react/pull/22644
const Noop = () => null
const AppContainerWithIsomorphicFiberStructure: React.FC<{
children: JSX.Element
}> = ({ children }) => {
return (
<>
{/* <Head/> */}
<Noop />
<AppContainer>
<>
{/* <ReactDevOverlay/> */}
{dev ? (
<>
{children}
<Noop />
</>
) : (
children
)}
{/* <RouteAnnouncer/> */}
<Noop />
</>
</AppContainer>
</>
)
}
const ctx = {
err,
req: isAutoExport ? undefined : req,
res: isAutoExport ? undefined : res,
pathname,
query,
asPath,
locale: renderOpts.locale,
locales: renderOpts.locales,
defaultLocale: renderOpts.defaultLocale,
AppTree: (props: any) => {
return (
<AppContainerWithIsomorphicFiberStructure>
{renderPageTree(App, OriginComponent, { ...props, router })}
</AppContainerWithIsomorphicFiberStructure>
)
},
defaultGetInitialProps: async (
docCtx: DocumentContext,
options: { nonce?: string } = {}
): Promise<DocumentInitialProps> => {
const enhanceApp = (AppComp: any) => {
return (props: any) => <AppComp {...props} />
}
const { html, head: renderPageHead } = await docCtx.renderPage({
enhanceApp,
})
const styles = jsxStyleRegistry.styles({ nonce: options.nonce })
jsxStyleRegistry.flush()
return { html, head: renderPageHead, styles }
},
}
let props: any
const nextExport =
!isSSG && (renderOpts.nextExport || (dev && (isAutoExport || isFallback)))
const styledJsxInsertedHTML = () => {
const styles = jsxStyleRegistry.styles()
jsxStyleRegistry.flush()
return <>{styles}</>
}
props = await loadGetInitialProps(App, {
AppTree: ctx.AppTree,
Component,
router,
ctx,
})
if ((isSSG || getServerSideProps) && isPreview) {
props.__N_PREVIEW = true
}
if (isSSG) {
props[STATIC_PROPS_ID] = true
}
if (isSSG && !isFallback) {
let data: UnwrapPromise<ReturnType<GetStaticProps>>
try {
data = await getTracer().trace(
RenderSpan.getStaticProps,
{
spanName: `getStaticProps ${pathname}`,
attributes: {
'next.route': pathname,
},
},
() =>
getStaticProps!({
...(pageIsDynamic
? { params: query as ParsedUrlQuery }
: undefined),
...(isPreview
? { draftMode: true, preview: true, previewData: previewData }
: undefined),
locales: renderOpts.locales,
locale: renderOpts.locale,
defaultLocale: renderOpts.defaultLocale,
})
)
} catch (staticPropsError: any) {
// remove not found error code to prevent triggering legacy
// 404 rendering
if (staticPropsError && staticPropsError.code === 'ENOENT') {
delete staticPropsError.code
}
throw staticPropsError
}
if (data == null) {
throw new Error(GSP_NO_RETURNED_VALUE)
}
const invalidKeys = Object.keys(data).filter(
(key) =>
key !== 'revalidate' &&
key !== 'props' &&
key !== 'redirect' &&
key !== 'notFound'
)
if (invalidKeys.includes('unstable_revalidate')) {
throw new Error(UNSTABLE_REVALIDATE_RENAME_ERROR)
}
if (invalidKeys.length) {
throw new Error(invalidKeysMsg('getStaticProps', invalidKeys))
}
if (process.env.NODE_ENV !== 'production') {
if (
typeof (data as any).notFound !== 'undefined' &&
typeof (data as any).redirect !== 'undefined'
) {
throw new Error(
`\`redirect\` and \`notFound\` can not both be returned from ${
isSSG ? 'getStaticProps' : 'getServerSideProps'
} at the same time. Page: ${pathname}\nSee more info here: https://nextjs.org/docs/messages/gssp-mixed-not-found-redirect`
)
}
}
if ('notFound' in data && data.notFound) {
if (pathname === '/404') {
throw new Error(
`The /404 page can not return notFound in "getStaticProps", please remove it to continue!`
)
}
renderResultMeta.isNotFound = true
}
if (
'redirect' in data &&
data.redirect &&
typeof data.redirect === 'object'
) {
checkRedirectValues(data.redirect as Redirect, req, 'getStaticProps')
if (isBuildTimeSSG) {
throw new Error(
`\`redirect\` can not be returned from getStaticProps during prerendering (${req.url})\n` +
`See more info here: https://nextjs.org/docs/messages/gsp-redirect-during-prerender`
)
}
;(data as any).props = {
__N_REDIRECT: data.redirect.destination,
__N_REDIRECT_STATUS: getRedirectStatus(data.redirect),
}
if (typeof data.redirect.basePath !== 'undefined') {
;(data as any).props.__N_REDIRECT_BASE_PATH = data.redirect.basePath
}
renderResultMeta.isRedirect = true
}
if (
(dev || isBuildTimeSSG) &&
!renderResultMeta.isNotFound &&
!isSerializableProps(pathname, 'getStaticProps', (data as any).props)
) {
// this fn should throw an error instead of ever returning `false`
throw new Error(
'invariant: getStaticProps did not return valid props. Please report this.'
)
}
if ('revalidate' in data) {
if (data.revalidate && renderOpts.nextConfigOutput === 'export') {
throw new Error(
'ISR cannot be used with "output: export". See more info here: https://nextjs.org/docs/advanced-features/static-html-export'
)
}
if (typeof data.revalidate === 'number') {
if (!Number.isInteger(data.revalidate)) {
throw new Error(
`A page's revalidate option must be seconds expressed as a natural number for ${req.url}. Mixed numbers, such as '${data.revalidate}', cannot be used.` +
`\nTry changing the value to '${Math.ceil(
data.revalidate
)}' or using \`Math.ceil()\` if you're computing the value.`
)
} else if (data.revalidate <= 0) {
throw new Error(
`A page's revalidate option can not be less than or equal to zero for ${req.url}. A revalidate option of zero means to revalidate after _every_ request, and implies stale data cannot be tolerated.` +
`\n\nTo never revalidate, you can set revalidate to \`false\` (only ran once at build-time).` +
`\nTo revalidate as soon as possible, you can set the value to \`1\`.`
)
} else if (data.revalidate > 31536000) {
// if it's greater than a year for some reason error
console.warn(
`Warning: A page's revalidate option was set to more than a year for ${req.url}. This may have been done in error.` +
`\nTo only run getStaticProps at build-time and not revalidate at runtime, you can set \`revalidate\` to \`false\`!`
)
}
} else if (data.revalidate === true) {
// When enabled, revalidate after 1 second. This value is optimal for
// the most up-to-date page possible, but without a 1-to-1
// request-refresh ratio.
data.revalidate = 1
} else if (
data.revalidate === false ||
typeof data.revalidate === 'undefined'
) {
// By default, we never revalidate.
data.revalidate = false
} else {
throw new Error(
`A page's revalidate option must be seconds expressed as a natural number. Mixed numbers and strings cannot be used. Received '${JSON.stringify(
data.revalidate
)}' for ${req.url}`
)
}
} else {
// By default, we never revalidate.
;(data as any).revalidate = false
}
props.pageProps = Object.assign(
{},
props.pageProps,
'props' in data ? data.props : undefined
)
// pass up revalidate and props for export
renderResultMeta.revalidate =
'revalidate' in data ? data.revalidate : undefined
renderResultMeta.pageData = props
// this must come after revalidate is added to renderResultMeta
if (renderResultMeta.isNotFound) {
return new RenderResult(null, renderResultMeta)
}
}
if (getServerSideProps) {
props[SERVER_PROPS_ID] = true
}
if (getServerSideProps && !isFallback) {
let data: UnwrapPromise<ReturnType<GetServerSideProps>>
let canAccessRes = true
let resOrProxy = res
let deferredContent = false
if (process.env.NODE_ENV !== 'production') {
resOrProxy = new Proxy<ServerResponse>(res, {
get: function (obj, prop) {
if (!canAccessRes) {
const message =
`You should not access 'res' after getServerSideProps resolves.` +
`\nRead more: https://nextjs.org/docs/messages/gssp-no-mutating-res`
if (deferredContent) {
throw new Error(message)
} else {
warn(message)