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base-server.ts
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base-server.ts
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import type { __ApiPreviewProps } from './api-utils'
import type { CustomRoutes } from '../lib/load-custom-routes'
import type { DomainLocale } from './config'
import type { DynamicRoutes, PageChecker, Route } from './router'
import type { FontManifest } from './font-utils'
import type { LoadComponentsReturnType } from './load-components'
import type { RouteMatch } from '../shared/lib/router/utils/route-matcher'
import type { Params } from '../shared/lib/router/utils/route-matcher'
import type { NextConfig, NextConfigComplete } from './config-shared'
import type { NextParsedUrlQuery, NextUrlWithParsedQuery } from './request-meta'
import type { ParsedUrlQuery } from 'querystring'
import type { RenderOpts, RenderOptsPartial } from './render'
import type { ResponseCacheEntry, ResponseCacheValue } from './response-cache'
import type { UrlWithParsedQuery } from 'url'
import {
CacheFs,
NormalizeError,
DecodeError,
normalizeRepeatedSlashes,
MissingStaticPage,
} from '../shared/lib/utils'
import type { PreviewData, ServerRuntime } from 'next/types'
import type { PagesManifest } from '../build/webpack/plugins/pages-manifest-plugin'
import type { BaseNextRequest, BaseNextResponse } from './base-http'
import type { PayloadOptions } from './send-payload'
import { join, resolve } from '../shared/lib/isomorphic/path'
import { parse as parseQs } from 'querystring'
import { format as formatUrl, parse as parseUrl } from 'url'
import { getRedirectStatus } from '../lib/redirect-status'
import {
NEXT_BUILTIN_DOCUMENT,
NEXT_CLIENT_SSR_ENTRY_SUFFIX,
SERVERLESS_DIRECTORY,
SERVER_DIRECTORY,
STATIC_STATUS_PAGES,
TEMPORARY_REDIRECT_STATUS,
} from '../shared/lib/constants'
import { getSortedRoutes, isDynamicRoute } from '../shared/lib/router/utils'
import {
setLazyProp,
getCookieParser,
checkIsManualRevalidate,
} from './api-utils'
import * as envConfig from '../shared/lib/runtime-config'
import { isTargetLikeServerless } from './utils'
import Router from './router'
import { getPathMatch } from '../shared/lib/router/utils/path-match'
import { setRevalidateHeaders } from './send-payload/revalidate-headers'
import { IncrementalCache } from './lib/incremental-cache'
import { execOnce } from '../shared/lib/utils'
import { isBlockedPage, isBot } from './utils'
import RenderResult from './render-result'
import { removeTrailingSlash } from '../shared/lib/router/utils/remove-trailing-slash'
import getRouteFromAssetPath from '../shared/lib/router/utils/get-route-from-asset-path'
import { denormalizePagePath } from '../shared/lib/page-path/denormalize-page-path'
import { normalizeLocalePath } from '../shared/lib/i18n/normalize-locale-path'
import * as Log from '../build/output/log'
import { detectDomainLocale } from '../shared/lib/i18n/detect-domain-locale'
import escapePathDelimiters from '../shared/lib/router/utils/escape-path-delimiters'
import { getUtils } from '../build/webpack/loaders/next-serverless-loader/utils'
import ResponseCache from './response-cache'
import isError, { getProperError } from '../lib/is-error'
import { addRequestMeta, getRequestMeta } from './request-meta'
import { createHeaderRoute, createRedirectRoute } from './server-route-utils'
import { PrerenderManifest } from '../build'
import { ImageConfigComplete } from '../shared/lib/image-config'
import { removePathPrefix } from '../shared/lib/router/utils/remove-path-prefix'
import { normalizeAppPath } from '../shared/lib/router/utils/app-paths'
import { getRouteMatcher } from '../shared/lib/router/utils/route-matcher'
import { getRouteRegex } from '../shared/lib/router/utils/route-regex'
import { getLocaleRedirect } from '../shared/lib/i18n/get-locale-redirect'
import { getHostname } from '../shared/lib/get-hostname'
import { parseUrl as parseUrlUtil } from '../shared/lib/router/utils/parse-url'
import { getNextPathnameInfo } from '../shared/lib/router/utils/get-next-pathname-info'
import { normalizePagePath } from '../shared/lib/page-path/normalize-page-path'
export type FindComponentsResult = {
components: LoadComponentsReturnType
query: NextParsedUrlQuery
}
export interface RoutingItem {
page: string
match: RouteMatch
re?: RegExp
}
export interface Options {
/**
* Object containing the configuration next.config.js
*/
conf: NextConfig
/**
* Set to false when the server was created by Next.js
*/
customServer?: boolean
/**
* Tells if Next.js is running in dev mode
*/
dev?: boolean
/**
* Where the Next project is located
*/
dir?: string
/**
* Tells if Next.js is running in a Serverless platform
*/
minimalMode?: boolean
/**
* Hide error messages containing server information
*/
quiet?: boolean
/**
* The hostname the server is running behind
*/
hostname?: string
/**
* The port the server is running behind
*/
port?: number
/**
* The HTTP Server that Next.js is running behind
*/
httpServer?: import('http').Server
}
export interface BaseRequestHandler {
(
req: BaseNextRequest,
res: BaseNextResponse,
parsedUrl?: NextUrlWithParsedQuery | undefined
): Promise<void>
}
type RequestContext = {
req: BaseNextRequest
res: BaseNextResponse
pathname: string
query: NextParsedUrlQuery
renderOpts: RenderOptsPartial
}
export default abstract class Server<ServerOptions extends Options = Options> {
protected dir: string
protected quiet: boolean
protected nextConfig: NextConfigComplete
protected distDir: string
protected publicDir: string
protected hasStaticDir: boolean
protected pagesManifest?: PagesManifest
protected appPathsManifest?: PagesManifest
protected buildId: string
protected minimalMode: boolean
protected renderOpts: {
poweredByHeader: boolean
buildId: string
generateEtags: boolean
runtimeConfig?: { [key: string]: any }
assetPrefix?: string
canonicalBase: string
dev?: boolean
previewProps: __ApiPreviewProps
customServer?: boolean
ampOptimizerConfig?: { [key: string]: any }
basePath: string
optimizeFonts: boolean
images: ImageConfigComplete
fontManifest?: FontManifest
disableOptimizedLoading?: boolean
optimizeCss: any
nextScriptWorkers: any
locale?: string
locales?: string[]
defaultLocale?: string
domainLocales?: DomainLocale[]
distDir: string
runtime?: ServerRuntime
serverComponents?: boolean
crossOrigin?: string
supportsDynamicHTML?: boolean
serverComponentManifest?: any
renderServerComponentData?: boolean
serverComponentProps?: any
largePageDataBytes?: number
}
protected serverOptions: ServerOptions
private incrementalCache: IncrementalCache
private responseCache: ResponseCache
protected router: Router
protected dynamicRoutes?: DynamicRoutes
protected appPathRoutes?: Record<string, string>
protected customRoutes: CustomRoutes
protected serverComponentManifest?: any
public readonly hostname?: string
public readonly port?: number
protected abstract getPublicDir(): string
protected abstract getHasStaticDir(): boolean
protected abstract getPagesManifest(): PagesManifest | undefined
protected abstract getAppPathsManifest(): PagesManifest | undefined
protected abstract getBuildId(): string
protected abstract generatePublicRoutes(): Route[]
protected abstract generateImageRoutes(): Route[]
protected abstract generateStaticRoutes(): Route[]
protected abstract generateFsStaticRoutes(): Route[]
protected abstract generateCatchAllMiddlewareRoute(): Route[]
protected abstract generateRewrites({
restrictedRedirectPaths,
}: {
restrictedRedirectPaths: string[]
}): {
beforeFiles: Route[]
afterFiles: Route[]
fallback: Route[]
}
protected abstract getFilesystemPaths(): Set<string>
protected abstract findPageComponents(
pathname: string,
query?: NextParsedUrlQuery,
params?: Params,
isAppDir?: boolean
): Promise<FindComponentsResult | null>
protected abstract getPagePath(pathname: string, locales?: string[]): string
protected abstract getFontManifest(): FontManifest | undefined
protected abstract getRoutesManifest(): CustomRoutes
protected abstract getPrerenderManifest(): PrerenderManifest
protected abstract getServerComponentManifest(): any
protected abstract attachRequestMeta(
req: BaseNextRequest,
parsedUrl: NextUrlWithParsedQuery
): void
protected abstract sendRenderResult(
req: BaseNextRequest,
res: BaseNextResponse,
options: {
result: RenderResult
type: 'html' | 'json'
generateEtags: boolean
poweredByHeader: boolean
options?: PayloadOptions
}
): Promise<void>
protected abstract runApi(
req: BaseNextRequest,
res: BaseNextResponse,
query: ParsedUrlQuery,
params: Params | undefined,
page: string,
builtPagePath: string
): Promise<boolean>
protected abstract renderHTML(
req: BaseNextRequest,
res: BaseNextResponse,
pathname: string,
query: NextParsedUrlQuery,
renderOpts: RenderOpts
): Promise<RenderResult | null>
protected abstract handleCompression(
req: BaseNextRequest,
res: BaseNextResponse
): void
protected abstract loadEnvConfig(params: { dev: boolean }): void
public constructor(options: ServerOptions) {
const {
dir = '.',
quiet = false,
conf,
dev = false,
minimalMode = false,
customServer = true,
hostname,
port,
} = options
this.serverOptions = options
this.dir = resolve(dir)
this.quiet = quiet
this.loadEnvConfig({ dev })
// TODO: should conf be normalized to prevent missing
// values from causing issues as this can be user provided
this.nextConfig = conf as NextConfigComplete
this.hostname = hostname
this.port = port
this.distDir = join(this.dir, this.nextConfig.distDir)
this.publicDir = this.getPublicDir()
this.hasStaticDir = !minimalMode && this.getHasStaticDir()
// Only serverRuntimeConfig needs the default
// publicRuntimeConfig gets it's default in client/index.js
const {
serverRuntimeConfig = {},
publicRuntimeConfig,
assetPrefix,
generateEtags,
} = this.nextConfig
this.buildId = this.getBuildId()
this.minimalMode = minimalMode || !!process.env.NEXT_PRIVATE_MINIMAL_MODE
const serverComponents = this.nextConfig.experimental.serverComponents
this.serverComponentManifest = serverComponents
? this.getServerComponentManifest()
: undefined
this.renderOpts = {
poweredByHeader: this.nextConfig.poweredByHeader,
canonicalBase: this.nextConfig.amp.canonicalBase || '',
buildId: this.buildId,
generateEtags,
previewProps: this.getPreviewProps(),
customServer: customServer === true ? true : undefined,
ampOptimizerConfig: this.nextConfig.experimental.amp?.optimizer,
basePath: this.nextConfig.basePath,
images: this.nextConfig.images,
optimizeFonts: !!this.nextConfig.optimizeFonts && !dev,
fontManifest:
this.nextConfig.optimizeFonts && !dev
? this.getFontManifest()
: undefined,
optimizeCss: this.nextConfig.experimental.optimizeCss,
nextScriptWorkers: this.nextConfig.experimental.nextScriptWorkers,
disableOptimizedLoading: this.nextConfig.experimental.runtime
? true
: this.nextConfig.experimental.disableOptimizedLoading,
domainLocales: this.nextConfig.i18n?.domains,
distDir: this.distDir,
runtime: this.nextConfig.experimental.runtime,
serverComponents,
crossOrigin: this.nextConfig.crossOrigin
? this.nextConfig.crossOrigin
: undefined,
largePageDataBytes: this.nextConfig.experimental.largePageDataBytes,
}
// Only the `publicRuntimeConfig` key is exposed to the client side
// It'll be rendered as part of __NEXT_DATA__ on the client side
if (Object.keys(publicRuntimeConfig).length > 0) {
this.renderOpts.runtimeConfig = publicRuntimeConfig
}
// Initialize next/config with the environment configuration
envConfig.setConfig({
serverRuntimeConfig,
publicRuntimeConfig,
})
this.pagesManifest = this.getPagesManifest()
this.appPathsManifest = this.getAppPathsManifest()
this.customRoutes = this.getCustomRoutes()
this.router = new Router(this.generateRoutes())
this.setAssetPrefix(assetPrefix)
this.incrementalCache = new IncrementalCache({
fs: this.getCacheFilesystem(),
dev,
serverDistDir: this.serverDistDir,
maxMemoryCacheSize: this.nextConfig.experimental.isrMemoryCacheSize,
flushToDisk: !minimalMode && this.nextConfig.experimental.isrFlushToDisk,
incrementalCacheHandlerPath:
this.nextConfig.experimental?.incrementalCacheHandlerPath,
getPrerenderManifest: () => {
if (dev) {
return {
version: -1 as any, // letting us know this doesn't conform to spec
routes: {},
dynamicRoutes: {},
notFoundRoutes: [],
preview: null as any, // `preview` is special case read in next-dev-server
}
} else {
return this.getPrerenderManifest()
}
},
})
this.responseCache = new ResponseCache(
this.incrementalCache,
this.minimalMode
)
}
public logError(err: Error): void {
if (this.quiet) return
console.error(err)
}
private async handleRequest(
req: BaseNextRequest,
res: BaseNextResponse,
parsedUrl?: NextUrlWithParsedQuery
): Promise<void> {
try {
const urlParts = (req.url || '').split('?')
const urlNoQuery = urlParts[0]
if (urlNoQuery?.match(/(\\|\/\/)/)) {
const cleanUrl = normalizeRepeatedSlashes(req.url!)
res.redirect(cleanUrl, 308).body(cleanUrl).send()
return
}
setLazyProp({ req: req as any }, 'cookies', getCookieParser(req.headers))
// Parse url if parsedUrl not provided
if (!parsedUrl || typeof parsedUrl !== 'object') {
parsedUrl = parseUrl(req.url!, true)
}
// Parse the querystring ourselves if the user doesn't handle querystring parsing
if (typeof parsedUrl.query === 'string') {
parsedUrl.query = parseQs(parsedUrl.query)
}
this.attachRequestMeta(req, parsedUrl)
const domainLocale = detectDomainLocale(
this.nextConfig.i18n?.domains,
getHostname(parsedUrl, req.headers)
)
const defaultLocale =
domainLocale?.defaultLocale || this.nextConfig.i18n?.defaultLocale
const url = parseUrlUtil(req.url.replace(/^\/+/, '/'))
const pathnameInfo = getNextPathnameInfo(url.pathname, {
nextConfig: this.nextConfig,
})
url.pathname = pathnameInfo.pathname
if (pathnameInfo.basePath) {
req.url = removePathPrefix(req.url!, this.nextConfig.basePath)
addRequestMeta(req, '_nextHadBasePath', true)
}
if (
this.minimalMode &&
typeof req.headers['x-matched-path'] === 'string'
) {
try {
// x-matched-path is the source of truth, it tells what page
// should be rendered because we don't process rewrites in minimalMode
let matchedPath = new URL(
req.headers['x-matched-path'],
'http://localhost'
).pathname
let urlPathname = new URL(req.url, 'http://localhost').pathname
// For ISR the URL is normalized to the prerenderPath so if
// it's a data request the URL path will be the data URL,
// basePath is already stripped by this point
if (urlPathname.startsWith(`/_next/data/`)) {
parsedUrl.query.__nextDataReq = '1'
}
const normalizedUrlPath = this.stripNextDataPath(urlPathname)
matchedPath = this.stripNextDataPath(matchedPath, false)
if (this.nextConfig.i18n) {
const localeResult = normalizeLocalePath(
matchedPath,
this.nextConfig.i18n.locales
)
matchedPath = localeResult.pathname
if (localeResult.detectedLocale) {
parsedUrl.query.__nextLocale = localeResult.detectedLocale
}
}
matchedPath = denormalizePagePath(matchedPath)
let srcPathname = matchedPath
if (
!isDynamicRoute(srcPathname) &&
!(await this.hasPage(removeTrailingSlash(srcPathname)))
) {
for (const dynamicRoute of this.dynamicRoutes || []) {
if (dynamicRoute.match(srcPathname)) {
srcPathname = dynamicRoute.page
break
}
}
}
const pageIsDynamic = isDynamicRoute(srcPathname)
const utils = getUtils({
pageIsDynamic,
page: srcPathname,
i18n: this.nextConfig.i18n,
basePath: this.nextConfig.basePath,
rewrites: this.customRoutes.rewrites,
})
// ensure parsedUrl.pathname includes URL before processing
// rewrites or they won't match correctly
if (defaultLocale && !pathnameInfo.locale) {
parsedUrl.pathname = `/${defaultLocale}${parsedUrl.pathname}`
}
const pathnameBeforeRewrite = parsedUrl.pathname
const rewriteParams = utils.handleRewrites(req, parsedUrl)
const rewriteParamKeys = Object.keys(rewriteParams)
const didRewrite = pathnameBeforeRewrite !== parsedUrl.pathname
if (didRewrite) {
addRequestMeta(req, '_nextRewroteUrl', parsedUrl.pathname!)
addRequestMeta(req, '_nextDidRewrite', true)
}
// interpolate dynamic params and normalize URL if needed
if (pageIsDynamic) {
let params: ParsedUrlQuery | false = {}
let paramsResult = utils.normalizeDynamicRouteParams(
parsedUrl.query
)
// for prerendered ISR paths we attempt parsing the route
// params from the URL directly as route-matches may not
// contain the correct values due to the filesystem path
// matching before the dynamic route has been matched
if (
!paramsResult.hasValidParams &&
pageIsDynamic &&
!isDynamicRoute(normalizedUrlPath)
) {
let matcherParams = utils.dynamicRouteMatcher?.(normalizedUrlPath)
if (matcherParams) {
utils.normalizeDynamicRouteParams(matcherParams)
Object.assign(paramsResult.params, matcherParams)
paramsResult.hasValidParams = true
}
}
if (paramsResult.hasValidParams) {
params = paramsResult.params
}
if (
req.headers['x-now-route-matches'] &&
isDynamicRoute(matchedPath) &&
!paramsResult.hasValidParams
) {
const opts: Record<string, string> = {}
const routeParams = utils.getParamsFromRouteMatches(
req,
opts,
parsedUrl.query.__nextLocale || ''
)
if (opts.locale) {
parsedUrl.query.__nextLocale = opts.locale
}
paramsResult = utils.normalizeDynamicRouteParams(
routeParams,
true
)
if (paramsResult.hasValidParams) {
params = paramsResult.params
}
}
// handle the actual dynamic route name being requested
if (
pageIsDynamic &&
utils.defaultRouteMatches &&
normalizedUrlPath === srcPathname &&
!paramsResult.hasValidParams &&
!utils.normalizeDynamicRouteParams({ ...params }, true)
.hasValidParams
) {
params = utils.defaultRouteMatches
}
if (params) {
matchedPath = utils.interpolateDynamicPath(srcPathname, params)
req.url = utils.interpolateDynamicPath(req.url!, params)
}
Object.assign(parsedUrl.query, params)
}
if (pageIsDynamic || didRewrite) {
utils.normalizeVercelUrl(req, true, [
...rewriteParamKeys,
...Object.keys(utils.defaultRouteRegex?.groups || {}),
])
}
parsedUrl.pathname = `${this.nextConfig.basePath || ''}${
matchedPath === '/' && this.nextConfig.basePath ? '' : matchedPath
}`
url.pathname = parsedUrl.pathname
} catch (err) {
if (err instanceof DecodeError || err instanceof NormalizeError) {
res.statusCode = 400
return this.renderError(null, req, res, '/_error', {})
}
throw err
}
}
addRequestMeta(req, '__nextHadTrailingSlash', pathnameInfo.trailingSlash)
addRequestMeta(req, '__nextIsLocaleDomain', Boolean(domainLocale))
parsedUrl.query.__nextDefaultLocale = defaultLocale
if (pathnameInfo.locale) {
req.url = formatUrl(url)
addRequestMeta(req, '__nextStrippedLocale', true)
}
if (!this.minimalMode || !parsedUrl.query.__nextLocale) {
if (pathnameInfo.locale || defaultLocale) {
parsedUrl.query.__nextLocale = pathnameInfo.locale || defaultLocale
}
}
if (!this.minimalMode && defaultLocale) {
const redirect = getLocaleRedirect({
defaultLocale,
domainLocale,
headers: req.headers,
nextConfig: this.nextConfig,
pathLocale: pathnameInfo.locale,
urlParsed: {
...url,
pathname: pathnameInfo.locale
? `/${pathnameInfo.locale}${url.pathname}`
: url.pathname,
},
})
if (redirect) {
return res
.redirect(redirect, TEMPORARY_REDIRECT_STATUS)
.body(redirect)
.send()
}
}
res.statusCode = 200
return await this.run(req, res, parsedUrl)
} catch (err: any) {
if (
(err && typeof err === 'object' && err.code === 'ERR_INVALID_URL') ||
err instanceof DecodeError ||
err instanceof NormalizeError
) {
res.statusCode = 400
return this.renderError(null, req, res, '/_error', {})
}
if (this.minimalMode || this.renderOpts.dev) {
throw err
}
this.logError(getProperError(err))
res.statusCode = 500
res.body('Internal Server Error').send()
}
}
public getRequestHandler(): BaseRequestHandler {
return this.handleRequest.bind(this)
}
protected async handleUpgrade(
_req: BaseNextRequest,
_socket: any,
_head?: any
): Promise<void> {}
public setAssetPrefix(prefix?: string): void {
this.renderOpts.assetPrefix = prefix ? prefix.replace(/\/$/, '') : ''
}
// Backwards compatibility
public async prepare(): Promise<void> {}
// Backwards compatibility
protected async close(): Promise<void> {}
protected getCustomRoutes(): CustomRoutes {
const customRoutes = this.getRoutesManifest()
let rewrites: CustomRoutes['rewrites']
// rewrites can be stored as an array when an array is
// returned in next.config.js so massage them into
// the expected object format
if (Array.isArray(customRoutes.rewrites)) {
rewrites = {
beforeFiles: [],
afterFiles: customRoutes.rewrites,
fallback: [],
}
} else {
rewrites = customRoutes.rewrites
}
return Object.assign(customRoutes, { rewrites })
}
protected getFallback(page: string): Promise<string> {
page = normalizePagePath(page)
const cacheFs = this.getCacheFilesystem()
return cacheFs.readFile(join(this.serverDistDir, 'pages', `${page}.html`))
}
protected getPreviewProps(): __ApiPreviewProps {
return this.getPrerenderManifest().preview
}
protected generateRoutes(): {
headers: Route[]
rewrites: {
beforeFiles: Route[]
afterFiles: Route[]
fallback: Route[]
}
fsRoutes: Route[]
redirects: Route[]
catchAllRoute: Route
catchAllMiddleware: Route[]
pageChecker: PageChecker
useFileSystemPublicRoutes: boolean
dynamicRoutes: DynamicRoutes | undefined
nextConfig: NextConfig
} {
const publicRoutes = this.generatePublicRoutes()
const imageRoutes = this.generateImageRoutes()
const staticFilesRoutes = this.generateStaticRoutes()
const fsRoutes: Route[] = [
...this.generateFsStaticRoutes(),
{
match: getPathMatch('/_next/data/:path*'),
type: 'route',
name: '_next/data catchall',
check: true,
fn: async (req, res, params, _parsedUrl) => {
// Make sure to 404 for /_next/data/ itself and
// we also want to 404 if the buildId isn't correct
if (!params.path || params.path[0] !== this.buildId) {
await this.render404(req, res, _parsedUrl)
return {
finished: true,
}
}
// remove buildId from URL
params.path.shift()
const lastParam = params.path[params.path.length - 1]
// show 404 if it doesn't end with .json
if (typeof lastParam !== 'string' || !lastParam.endsWith('.json')) {
await this.render404(req, res, _parsedUrl)
return {
finished: true,
}
}
// re-create page's pathname
let pathname = `/${params.path.join('/')}`
pathname = getRouteFromAssetPath(pathname, '.json')
// ensure trailing slash is normalized per config
if (this.router.catchAllMiddleware[0]) {
if (this.nextConfig.trailingSlash && !pathname.endsWith('/')) {
pathname += '/'
}
if (
!this.nextConfig.trailingSlash &&
pathname.length > 1 &&
pathname.endsWith('/')
) {
pathname = pathname.substring(0, pathname.length - 1)
}
}
if (this.nextConfig.i18n) {
const { host } = req?.headers || {}
// remove port from host and remove port if present
const hostname = host?.split(':')[0].toLowerCase()
const localePathResult = normalizeLocalePath(
pathname,
this.nextConfig.i18n.locales
)
const { defaultLocale } =
detectDomainLocale(this.nextConfig.i18n.domains, hostname) || {}
let detectedLocale = ''
if (localePathResult.detectedLocale) {
pathname = localePathResult.pathname
detectedLocale = localePathResult.detectedLocale
}
_parsedUrl.query.__nextLocale = detectedLocale
_parsedUrl.query.__nextDefaultLocale =
defaultLocale || this.nextConfig.i18n.defaultLocale
if (!detectedLocale && !this.router.catchAllMiddleware[0]) {
_parsedUrl.query.__nextLocale =
_parsedUrl.query.__nextDefaultLocale
await this.render404(req, res, _parsedUrl)
return { finished: true }
}
}
return {
pathname,
query: { ..._parsedUrl.query, __nextDataReq: '1' },
finished: false,
}
},
},
...imageRoutes,
{
match: getPathMatch('/_next/:path*'),
type: 'route',
name: '_next catchall',
// This path is needed because `render()` does a check for `/_next` and the calls the routing again
fn: async (req, res, _params, parsedUrl) => {
await this.render404(req, res, parsedUrl)
return {
finished: true,
}
},
},
...publicRoutes,
...staticFilesRoutes,
]
const restrictedRedirectPaths = this.nextConfig.basePath
? [`${this.nextConfig.basePath}/_next`]
: ['/_next']
// Headers come very first
const headers = this.minimalMode
? []
: this.customRoutes.headers.map((rule) =>
createHeaderRoute({ rule, restrictedRedirectPaths })
)
const redirects = this.minimalMode
? []
: this.customRoutes.redirects.map((rule) =>
createRedirectRoute({ rule, restrictedRedirectPaths })
)
const rewrites = this.generateRewrites({ restrictedRedirectPaths })
const catchAllMiddleware = this.generateCatchAllMiddlewareRoute()
const catchAllRoute: Route = {
match: getPathMatch('/:path*'),
type: 'route',
matchesLocale: true,
name: 'Catchall render',
fn: async (req, res, _params, parsedUrl) => {
let { pathname, query } = parsedUrl
if (!pathname) {
throw new Error('pathname is undefined')
}
// next.js core assumes page path without trailing slash
pathname = removeTrailingSlash(pathname)
if (this.nextConfig.i18n) {
const localePathResult = normalizeLocalePath(
pathname,
this.nextConfig.i18n?.locales
)
if (localePathResult.detectedLocale) {
pathname = localePathResult.pathname
parsedUrl.query.__nextLocale = localePathResult.detectedLocale
}
}
const bubbleNoFallback = !!query._nextBubbleNoFallback
if (pathname === '/api' || pathname.startsWith('/api/')) {
delete query._nextBubbleNoFallback
const handled = await this.handleApiRequest(req, res, pathname, query)
if (handled) {
return { finished: true }
}
}
try {
await this.render(req, res, pathname, query, parsedUrl, true)
return {
finished: true,
}
} catch (err) {
if (err instanceof NoFallbackError && bubbleNoFallback) {
return {
finished: false,
}
}
throw err
}
},
}
const { useFileSystemPublicRoutes } = this.nextConfig
if (useFileSystemPublicRoutes) {
this.appPathRoutes = this.getAppPathRoutes()
this.dynamicRoutes = this.getDynamicRoutes()
}
return {
headers,
fsRoutes,
rewrites,
redirects,
catchAllRoute,
catchAllMiddleware,
useFileSystemPublicRoutes,
dynamicRoutes: this.dynamicRoutes,
pageChecker: this.hasPage.bind(this),
nextConfig: this.nextConfig,
}
}
protected async hasPage(pathname: string): Promise<boolean> {
let found = false
try {
found = !!this.getPagePath(pathname, this.nextConfig.i18n?.locales)
} catch (_) {}
return found
}
protected async _beforeCatchAllRender(
_req: BaseNextRequest,
_res: BaseNextResponse,
_params: Params,
_parsedUrl: UrlWithParsedQuery
): Promise<boolean> {
return false
}
// Used to build API page in development
protected async ensureApiPage(_pathname: string): Promise<void> {}
/**
* Resolves `API` request, in development builds on demand
* @param req http request
* @param res http response
* @param pathname path of request
*/
private async handleApiRequest(
req: BaseNextRequest,
res: BaseNextResponse,
pathname: string,
query: ParsedUrlQuery
): Promise<boolean> {
let page = pathname
let params: Params | undefined = undefined
let pageFound = !isDynamicRoute(page) && (await this.hasPage(page))
if (!pageFound && this.dynamicRoutes) {
for (const dynamicRoute of this.dynamicRoutes) {
params = dynamicRoute.match(pathname) || undefined
if (dynamicRoute.page.startsWith('/api') && params) {
page = dynamicRoute.page
pageFound = true
break
}
}
}
if (!pageFound) {
return false
}
// Make sure the page is built before getting the path
// or else it won't be in the manifest yet
await this.ensureApiPage(page)
let builtPagePath
try {
builtPagePath = this.getPagePath(page)
} catch (err) {
if (isError(err) && err.code === 'ENOENT') {
return false
}
throw err
}
return this.runApi(req, res, query, params, page, builtPagePath)
}
protected getDynamicRoutes(): Array<RoutingItem> {