/
next-server.ts
1825 lines (1629 loc) · 53 KB
/
next-server.ts
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import compression from 'next/dist/compiled/compression'
import fs from 'fs'
import chalk from 'next/dist/compiled/chalk'
import { IncomingMessage, ServerResponse } from 'http'
import Proxy from 'next/dist/compiled/http-proxy'
import { join, relative, resolve, sep } from 'path'
import {
parse as parseQs,
stringify as stringifyQs,
ParsedUrlQuery,
} from 'querystring'
import { format as formatUrl, parse as parseUrl, UrlWithParsedQuery } from 'url'
import { PrerenderManifest } from '../../build'
import {
getRedirectStatus,
Header,
Redirect,
Rewrite,
RouteType,
CustomRoutes,
} from '../../lib/load-custom-routes'
import { withCoalescedInvoke } from '../../lib/coalesced-function'
import {
BUILD_ID_FILE,
CLIENT_PUBLIC_FILES_PATH,
CLIENT_STATIC_FILES_PATH,
CLIENT_STATIC_FILES_RUNTIME,
PAGES_MANIFEST,
PHASE_PRODUCTION_SERVER,
PRERENDER_MANIFEST,
ROUTES_MANIFEST,
SERVERLESS_DIRECTORY,
SERVER_DIRECTORY,
} from '../lib/constants'
import {
getRouteMatcher,
getRouteRegex,
getSortedRoutes,
isDynamicRoute,
} from '../lib/router/utils'
import * as envConfig from '../lib/runtime-config'
import { isResSent, NextApiRequest, NextApiResponse } from '../lib/utils'
import {
apiResolver,
setLazyProp,
getCookieParser,
tryGetPreviewData,
__ApiPreviewProps,
} from './api-utils'
import loadConfig, { isTargetLikeServerless } from './config'
import pathMatch from '../lib/router/utils/path-match'
import { recursiveReadDirSync } from './lib/recursive-readdir-sync'
import { loadComponents, LoadComponentsReturnType } from './load-components'
import { normalizePagePath } from './normalize-page-path'
import { RenderOpts, RenderOptsPartial, renderToHTML } from './render'
import { getPagePath, requireFontManifest } from './require'
import Router, {
DynamicRoutes,
PageChecker,
Params,
route,
Route,
} from './router'
import prepareDestination from '../lib/router/utils/prepare-destination'
import { sendPayload } from './send-payload'
import { serveStatic } from './serve-static'
import { IncrementalCache } from './incremental-cache'
import { execOnce } from '../lib/utils'
import { isBlockedPage } from './utils'
import { compile as compilePathToRegex } from 'next/dist/compiled/path-to-regexp'
import { loadEnvConfig } from '@next/env'
import './node-polyfill-fetch'
import { PagesManifest } from '../../build/webpack/plugins/pages-manifest-plugin'
import { removePathTrailingSlash } from '../../client/normalize-trailing-slash'
import getRouteFromAssetPath from '../lib/router/utils/get-route-from-asset-path'
import { FontManifest } from './font-utils'
import { denormalizePagePath } from './denormalize-page-path'
import accept from '@hapi/accept'
import { normalizeLocalePath } from '../lib/i18n/normalize-locale-path'
import { detectLocaleCookie } from '../lib/i18n/detect-locale-cookie'
import * as Log from '../../build/output/log'
import { imageOptimizer } from './image-optimizer'
import { detectDomainLocale } from '../lib/i18n/detect-domain-locale'
import cookie from 'next/dist/compiled/cookie'
const getCustomRouteMatcher = pathMatch(true)
type NextConfig = any
type Middleware = (
req: IncomingMessage,
res: ServerResponse,
next: (err?: Error) => void
) => void
type FindComponentsResult = {
components: LoadComponentsReturnType
query: ParsedUrlQuery
}
export type ServerConstructor = {
/**
* Where the Next project is located - @default '.'
*/
dir?: string
/**
* Hide error messages containing server information - @default false
*/
quiet?: boolean
/**
* Object what you would use in next.config.js - @default {}
*/
conf?: NextConfig
dev?: boolean
customServer?: boolean
}
export default class Server {
dir: string
quiet: boolean
nextConfig: NextConfig
distDir: string
pagesDir?: string
publicDir: string
hasStaticDir: boolean
serverBuildDir: string
pagesManifest?: PagesManifest
buildId: string
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: string
fontManifest: FontManifest
optimizeImages: boolean
locale?: string
locales?: string[]
defaultLocale?: string
}
private compression?: Middleware
private onErrorMiddleware?: ({ err }: { err: Error }) => Promise<void>
private incrementalCache: IncrementalCache
router: Router
protected dynamicRoutes?: DynamicRoutes
protected customRoutes: CustomRoutes
public constructor({
dir = '.',
quiet = false,
conf = null,
dev = false,
customServer = true,
}: ServerConstructor = {}) {
this.dir = resolve(dir)
this.quiet = quiet
const phase = this.currentPhase()
loadEnvConfig(this.dir, dev, Log)
this.nextConfig = loadConfig(phase, this.dir, conf)
this.distDir = join(this.dir, this.nextConfig.distDir)
this.publicDir = join(this.dir, CLIENT_PUBLIC_FILES_PATH)
this.hasStaticDir = fs.existsSync(join(this.dir, 'static'))
// Only serverRuntimeConfig needs the default
// publicRuntimeConfig gets it's default in client/index.js
const {
serverRuntimeConfig = {},
publicRuntimeConfig,
assetPrefix,
generateEtags,
compress,
} = this.nextConfig
this.buildId = this.readBuildId()
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: JSON.stringify(this.nextConfig.images),
optimizeFonts: this.nextConfig.experimental.optimizeFonts && !dev,
fontManifest:
this.nextConfig.experimental.optimizeFonts && !dev
? requireFontManifest(this.distDir, this._isLikeServerless)
: null,
optimizeImages: this.nextConfig.experimental.optimizeImages,
defaultLocale: this.nextConfig.experimental.i18n?.defaultLocale,
}
// 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
}
if (compress && this.nextConfig.target === 'server') {
this.compression = compression() as Middleware
}
// Initialize next/config with the environment configuration
envConfig.setConfig({
serverRuntimeConfig,
publicRuntimeConfig,
})
this.serverBuildDir = join(
this.distDir,
this._isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY
)
const pagesManifestPath = join(this.serverBuildDir, PAGES_MANIFEST)
if (!dev) {
this.pagesManifest = require(pagesManifestPath)
}
this.customRoutes = this.getCustomRoutes()
this.router = new Router(this.generateRoutes())
this.setAssetPrefix(assetPrefix)
// call init-server middleware, this is also handled
// individually in serverless bundles when deployed
if (!dev && this.nextConfig.experimental.plugins) {
const initServer = require(join(this.serverBuildDir, 'init-server.js'))
.default
this.onErrorMiddleware = require(join(
this.serverBuildDir,
'on-error-server.js'
)).default
initServer()
}
this.incrementalCache = new IncrementalCache({
dev,
distDir: this.distDir,
pagesDir: join(
this.distDir,
this._isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY,
'pages'
),
flushToDisk: this.nextConfig.experimental.sprFlushToDisk,
})
/**
* This sets environment variable to be used at the time of SSR by head.tsx.
* Using this from process.env allows targetting both serverless and SSR by calling
* `process.env.__NEXT_OPTIMIZE_FONTS`.
* TODO(prateekbh@): Remove this when experimental.optimizeFonts are being clened up.
*/
if (this.renderOpts.optimizeFonts) {
process.env.__NEXT_OPTIMIZE_FONTS = JSON.stringify(true)
}
if (this.renderOpts.optimizeImages) {
process.env.__NEXT_OPTIMIZE_IMAGES = JSON.stringify(true)
}
}
protected currentPhase(): string {
return PHASE_PRODUCTION_SERVER
}
public logError(err: Error): void {
if (this.onErrorMiddleware) {
this.onErrorMiddleware({ err })
}
if (this.quiet) return
console.error(err)
}
private async handleRequest(
req: IncomingMessage,
res: ServerResponse,
parsedUrl?: UrlWithParsedQuery
): Promise<void> {
setLazyProp({ req: req as any }, 'cookies', getCookieParser(req))
// Parse url if parsedUrl not provided
if (!parsedUrl || typeof parsedUrl !== 'object') {
const url: any = req.url
parsedUrl = parseUrl(url, true)
}
// Parse the querystring ourselves if the user doesn't handle querystring parsing
if (typeof parsedUrl.query === 'string') {
parsedUrl.query = parseQs(parsedUrl.query)
}
const { basePath } = this.nextConfig
const { i18n } = this.nextConfig.experimental
if (basePath && req.url?.startsWith(basePath)) {
// store original URL to allow checking if basePath was
// provided or not
;(req as any)._nextHadBasePath = true
req.url = req.url!.replace(basePath, '') || '/'
}
if (i18n && !parsedUrl.pathname?.startsWith('/_next')) {
// get pathname from URL with basePath stripped for locale detection
const { pathname, ...parsed } = parseUrl(req.url || '/')
let defaultLocale = i18n.defaultLocale
let detectedLocale = detectLocaleCookie(req, i18n.locales)
let acceptPreferredLocale = accept.language(
req.headers['accept-language'],
i18n.locales
)
const { host } = req?.headers || {}
// remove port from host and remove port if present
const hostname = host?.split(':')[0].toLowerCase()
const detectedDomain = detectDomainLocale(i18n.domains, hostname)
if (detectedDomain) {
defaultLocale = detectedDomain.defaultLocale
detectedLocale = defaultLocale
}
// if not domain specific locale use accept-language preferred
detectedLocale = detectedLocale || acceptPreferredLocale
let localeDomainRedirect: string | undefined
const localePathResult = normalizeLocalePath(pathname!, i18n.locales)
if (localePathResult.detectedLocale) {
detectedLocale = localePathResult.detectedLocale
req.url = formatUrl({
...parsed,
pathname: localePathResult.pathname,
})
;(req as any).__nextStrippedLocale = true
parsedUrl.pathname = localePathResult.pathname
// check if the locale prefix matches a domain's defaultLocale
// and we're on a locale specific domain if so redirect to that domain
// if (detectedDomain) {
// const matchedDomain = detectDomainLocale(
// i18n.domains,
// undefined,
// detectedLocale
// )
// if (matchedDomain) {
// localeDomainRedirect = `http${matchedDomain.http ? '' : 's'}://${
// matchedDomain?.domain
// }`
// }
// }
} else if (detectedDomain) {
const matchedDomain = detectDomainLocale(
i18n.domains,
undefined,
acceptPreferredLocale
)
if (matchedDomain && matchedDomain.domain !== detectedDomain.domain) {
localeDomainRedirect = `http${matchedDomain.http ? '' : 's'}://${
matchedDomain.domain
}`
}
}
const denormalizedPagePath = denormalizePagePath(pathname || '/')
const detectedDefaultLocale =
!detectedLocale ||
detectedLocale.toLowerCase() === defaultLocale.toLowerCase()
const shouldStripDefaultLocale = false
// detectedDefaultLocale &&
// denormalizedPagePath.toLowerCase() ===
// `/${i18n.defaultLocale.toLowerCase()}`
const shouldAddLocalePrefix =
!detectedDefaultLocale && denormalizedPagePath === '/'
detectedLocale = detectedLocale || i18n.defaultLocale
if (
i18n.localeDetection !== false &&
(localeDomainRedirect ||
shouldAddLocalePrefix ||
shouldStripDefaultLocale)
) {
// set the NEXT_LOCALE cookie when a user visits the default locale
// with the locale prefix so that they aren't redirected back to
// their accept-language preferred locale
if (
shouldStripDefaultLocale &&
acceptPreferredLocale !== defaultLocale
) {
const previous = res.getHeader('set-cookie')
res.setHeader('set-cookie', [
...(typeof previous === 'string'
? [previous]
: Array.isArray(previous)
? previous
: []),
cookie.serialize('NEXT_LOCALE', defaultLocale, {
httpOnly: true,
path: '/',
}),
])
}
res.setHeader(
'Location',
formatUrl({
// make sure to include any query values when redirecting
...parsed,
pathname: localeDomainRedirect
? localeDomainRedirect
: shouldStripDefaultLocale
? '/'
: `/${detectedLocale}`,
})
)
res.statusCode = 307
res.end()
return
}
parsedUrl.query.__nextLocale = detectedLocale || defaultLocale
}
res.statusCode = 200
try {
return await this.run(req, res, parsedUrl)
} catch (err) {
this.logError(err)
res.statusCode = 500
res.end('Internal Server Error')
}
}
public getRequestHandler() {
return this.handleRequest.bind(this)
}
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 setImmutableAssetCacheControl(res: ServerResponse): void {
res.setHeader('Cache-Control', 'public, max-age=31536000, immutable')
}
protected getCustomRoutes(): CustomRoutes {
return require(join(this.distDir, ROUTES_MANIFEST))
}
private _cachedPreviewManifest: PrerenderManifest | undefined
protected getPrerenderManifest(): PrerenderManifest {
if (this._cachedPreviewManifest) {
return this._cachedPreviewManifest
}
const manifest = require(join(this.distDir, PRERENDER_MANIFEST))
return (this._cachedPreviewManifest = manifest)
}
protected getPreviewProps(): __ApiPreviewProps {
return this.getPrerenderManifest().preview
}
protected generateRoutes(): {
basePath: string
headers: Route[]
rewrites: Route[]
fsRoutes: Route[]
redirects: Route[]
catchAllRoute: Route
pageChecker: PageChecker
useFileSystemPublicRoutes: boolean
dynamicRoutes: DynamicRoutes | undefined
} {
const server: Server = this
const publicRoutes = fs.existsSync(this.publicDir)
? this.generatePublicRoutes()
: []
const staticFilesRoute = this.hasStaticDir
? [
{
// It's very important to keep this route's param optional.
// (but it should support as many params as needed, separated by '/')
// Otherwise this will lead to a pretty simple DOS attack.
// See more: https://github.com/vercel/next.js/issues/2617
match: route('/static/:path*'),
name: 'static catchall',
fn: async (req, res, params, parsedUrl) => {
const p = join(this.dir, 'static', ...params.path)
await this.serveStatic(req, res, p, parsedUrl)
return {
finished: true,
}
},
} as Route,
]
: []
const fsRoutes: Route[] = [
{
match: route('/_next/static/:path*'),
type: 'route',
name: '_next/static catchall',
fn: async (req, res, params, parsedUrl) => {
// make sure to 404 for /_next/static itself
if (!params.path) {
await this.render404(req, res, parsedUrl)
return {
finished: true,
}
}
if (
params.path[0] === CLIENT_STATIC_FILES_RUNTIME ||
params.path[0] === 'chunks' ||
params.path[0] === 'css' ||
params.path[0] === 'media' ||
params.path[0] === this.buildId ||
params.path[0] === 'pages' ||
params.path[1] === 'pages'
) {
this.setImmutableAssetCacheControl(res)
}
const p = join(
this.distDir,
CLIENT_STATIC_FILES_PATH,
...(params.path || [])
)
await this.serveStatic(req, res, p, parsedUrl)
return {
finished: true,
}
},
},
{
match: route('/_next/data/:path*'),
type: 'route',
name: '_next/data catchall',
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()
// show 404 if it doesn't end with .json
if (!params.path[params.path.length - 1].endsWith('.json')) {
await this.render404(req, res, _parsedUrl)
return {
finished: true,
}
}
// re-create page's pathname
let pathname = `/${params.path.join('/')}`
const { i18n } = this.nextConfig.experimental
if (i18n) {
const { host } = req?.headers || {}
// remove port from host and remove port if present
const hostname = host?.split(':')[0].toLowerCase()
const localePathResult = normalizeLocalePath(pathname, i18n.locales)
const { defaultLocale } =
detectDomainLocale(i18n.domains, hostname) || {}
let detectedLocale = defaultLocale
if (localePathResult.detectedLocale) {
pathname = localePathResult.pathname
detectedLocale = localePathResult.detectedLocale
}
_parsedUrl.query.__nextLocale = detectedLocale!
}
pathname = getRouteFromAssetPath(pathname, '.json')
const parsedUrl = parseUrl(pathname, true)
await this.render(
req,
res,
pathname,
{ ..._parsedUrl.query, _nextDataReq: '1' },
parsedUrl
)
return {
finished: true,
}
},
},
{
match: route('/_next/image'),
type: 'route',
name: '_next/image catchall',
fn: (req, res, _params, parsedUrl) =>
imageOptimizer(server, req, res, parsedUrl),
},
{
match: route('/_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,
...staticFilesRoute,
]
const getCustomRouteBasePath = (r: { basePath?: false }) => {
return r.basePath !== false && this.renderOpts.dev
? this.nextConfig.basePath
: ''
}
const getCustomRoute = (r: Rewrite | Redirect | Header, type: RouteType) =>
({
...r,
type,
match: getCustomRouteMatcher(`${getCustomRouteBasePath(r)}${r.source}`),
name: type,
fn: async (_req, _res, _params, _parsedUrl) => ({ finished: false }),
} as Route & Rewrite & Header)
const updateHeaderValue = (value: string, params: Params): string => {
if (!value.includes(':')) {
return value
}
for (const key of Object.keys(params)) {
if (value.includes(`:${key}`)) {
value = value
.replace(
new RegExp(`:${key}\\*`, 'g'),
`:${key}--ESCAPED_PARAM_ASTERISKS`
)
.replace(
new RegExp(`:${key}\\?`, 'g'),
`:${key}--ESCAPED_PARAM_QUESTION`
)
.replace(
new RegExp(`:${key}\\+`, 'g'),
`:${key}--ESCAPED_PARAM_PLUS`
)
.replace(
new RegExp(`:${key}(?!\\w)`, 'g'),
`--ESCAPED_PARAM_COLON${key}`
)
}
}
value = value
.replace(/(:|\*|\?|\+|\(|\)|\{|\})/g, '\\$1')
.replace(/--ESCAPED_PARAM_PLUS/g, '+')
.replace(/--ESCAPED_PARAM_COLON/g, ':')
.replace(/--ESCAPED_PARAM_QUESTION/g, '?')
.replace(/--ESCAPED_PARAM_ASTERISKS/g, '*')
// the value needs to start with a forward-slash to be compiled
// correctly
return compilePathToRegex(`/${value}`, { validate: false })(
params
).substr(1)
}
// Headers come very first
const headers = this.customRoutes.headers.map((r) => {
const headerRoute = getCustomRoute(r, 'header')
return {
match: headerRoute.match,
type: headerRoute.type,
name: `${headerRoute.type} ${headerRoute.source} header route`,
fn: async (_req, res, params, _parsedUrl) => {
const hasParams = Object.keys(params).length > 0
for (const header of (headerRoute as Header).headers) {
let { key, value } = header
if (hasParams) {
key = updateHeaderValue(key, params)
value = updateHeaderValue(value, params)
}
res.setHeader(key, value)
}
return { finished: false }
},
} as Route
})
const redirects = this.customRoutes.redirects.map((redirect) => {
const redirectRoute = getCustomRoute(redirect, 'redirect')
return {
type: redirectRoute.type,
match: redirectRoute.match,
statusCode: redirectRoute.statusCode,
name: `Redirect route`,
fn: async (_req, res, params, parsedUrl) => {
const { parsedDestination } = prepareDestination(
redirectRoute.destination,
params,
parsedUrl.query,
false,
getCustomRouteBasePath(redirectRoute)
)
const { query } = parsedDestination
delete (parsedDestination as any).query
parsedDestination.search = stringifyQs(query, undefined, undefined, {
encodeURIComponent: (str: string) => str,
} as any)
const updatedDestination = formatUrl(parsedDestination)
res.setHeader('Location', updatedDestination)
res.statusCode = getRedirectStatus(redirectRoute as Redirect)
// Since IE11 doesn't support the 308 header add backwards
// compatibility using refresh header
if (res.statusCode === 308) {
res.setHeader('Refresh', `0;url=${updatedDestination}`)
}
res.end()
return {
finished: true,
}
},
} as Route
})
const rewrites = this.customRoutes.rewrites.map((rewrite) => {
const rewriteRoute = getCustomRoute(rewrite, 'rewrite')
return {
...rewriteRoute,
check: true,
type: rewriteRoute.type,
name: `Rewrite route`,
match: rewriteRoute.match,
fn: async (req, res, params, parsedUrl) => {
const { newUrl, parsedDestination } = prepareDestination(
rewriteRoute.destination,
params,
parsedUrl.query,
true,
getCustomRouteBasePath(rewriteRoute)
)
// external rewrite, proxy it
if (parsedDestination.protocol) {
const { query } = parsedDestination
delete (parsedDestination as any).query
parsedDestination.search = stringifyQs(
query,
undefined,
undefined,
{ encodeURIComponent: (str) => str }
)
const target = formatUrl(parsedDestination)
const proxy = new Proxy({
target,
changeOrigin: true,
ignorePath: true,
})
proxy.web(req, res)
proxy.on('error', (err: Error) => {
console.error(`Error occurred proxying ${target}`, err)
})
return {
finished: true,
}
}
;(req as any)._nextRewroteUrl = newUrl
;(req as any)._nextDidRewrite =
(req as any)._nextRewroteUrl !== req.url
return {
finished: false,
pathname: newUrl,
query: parsedDestination.query,
}
},
} as Route
})
const catchAllRoute: Route = {
match: route('/:path*'),
type: 'route',
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 = removePathTrailingSlash(pathname)
if (params?.path?.[0] === 'api') {
const handled = await this.handleApiRequest(
req as NextApiRequest,
res as NextApiResponse,
pathname,
query
)
if (handled) {
return { finished: true }
}
}
await this.render(req, res, pathname, query, parsedUrl)
return {
finished: true,
}
},
}
const { useFileSystemPublicRoutes } = this.nextConfig
if (useFileSystemPublicRoutes) {
this.dynamicRoutes = this.getDynamicRoutes()
}
return {
headers,
fsRoutes,
rewrites,
redirects,
catchAllRoute,
useFileSystemPublicRoutes,
dynamicRoutes: this.dynamicRoutes,
basePath: this.nextConfig.basePath,
pageChecker: this.hasPage.bind(this),
}
}
private async getPagePath(pathname: string): Promise<string> {
return getPagePath(
pathname,
this.distDir,
this._isLikeServerless,
this.renderOpts.dev
)
}
protected async hasPage(pathname: string): Promise<boolean> {
let found = false
try {
found = !!(await this.getPagePath(pathname))
} catch (_) {}
return found
}
protected async _beforeCatchAllRender(
_req: IncomingMessage,
_res: ServerResponse,
_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: IncomingMessage,
res: ServerResponse,
pathname: string,
query: ParsedUrlQuery
): Promise<boolean> {
let page = pathname
let params: Params | boolean = false
let pageFound = await this.hasPage(page)
if (!pageFound && this.dynamicRoutes) {
for (const dynamicRoute of this.dynamicRoutes) {
params = dynamicRoute.match(pathname)
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 = await this.getPagePath(page)
} catch (err) {
if (err.code === 'ENOENT') {
return false
}
throw err
}
const pageModule = await require(builtPagePath)
query = { ...query, ...params }
if (!this.renderOpts.dev && this._isLikeServerless) {
if (typeof pageModule.default === 'function') {
prepareServerlessUrl(req, query)
await pageModule.default(req, res)
return true
}
}
await apiResolver(
req,
res,
query,
pageModule,
this.renderOpts.previewProps,
false,
this.onErrorMiddleware
)
return true
}
protected generatePublicRoutes(): Route[] {
const publicFiles = new Set(
recursiveReadDirSync(this.publicDir).map((p) =>
encodeURI(p.replace(/\\/g, '/'))
)
)
return [
{
match: route('/:path*'),
name: 'public folder catchall',
fn: async (req, res, params, parsedUrl) => {
const pathParts: string[] = params.path || []
const { basePath } = this.nextConfig
// if basePath is defined require it be present
if (basePath) {
if (pathParts[0] !== basePath.substr(1)) return { finished: false }
pathParts.shift()
}
const path = `/${pathParts.join('/')}`
if (publicFiles.has(path)) {
await this.serveStatic(
req,
res,
join(this.publicDir, ...pathParts),
parsedUrl
)
return {
finished: true,
}
}
return {
finished: false,
}
},
} as Route,
]
}