b8d075ef0e
* Remove req.env * Rename NEXT_APP_ to NEXT_PUBLIC_ * Remove key exposing env config * Update tests * Update NEXT_APP_ test to NEXT_PUBLIC_
1460 lines
40 KiB
TypeScript
1460 lines
40 KiB
TypeScript
import compression from 'next/dist/compiled/compression'
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import fs from 'fs'
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import { IncomingMessage, ServerResponse } from 'http'
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import Proxy from 'next/dist/compiled/http-proxy'
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import nanoid from 'next/dist/compiled/nanoid/index.js'
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import { join, relative, resolve, sep } from 'path'
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import { parse as parseQs, ParsedUrlQuery } from 'querystring'
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import { format as formatUrl, parse as parseUrl, UrlWithParsedQuery } from 'url'
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import { PrerenderManifest } from '../../build'
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import {
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getRedirectStatus,
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Header,
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Redirect,
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Rewrite,
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RouteType,
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} from '../../lib/check-custom-routes'
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import { withCoalescedInvoke } from '../../lib/coalesced-function'
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import {
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BUILD_ID_FILE,
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CLIENT_PUBLIC_FILES_PATH,
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CLIENT_STATIC_FILES_PATH,
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CLIENT_STATIC_FILES_RUNTIME,
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PAGES_MANIFEST,
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PHASE_PRODUCTION_SERVER,
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PRERENDER_MANIFEST,
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ROUTES_MANIFEST,
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SERVERLESS_DIRECTORY,
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SERVER_DIRECTORY,
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} from '../lib/constants'
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import {
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getRouteMatcher,
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getRouteRegex,
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getSortedRoutes,
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isDynamicRoute,
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} from '../lib/router/utils'
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import * as envConfig from '../lib/runtime-config'
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import { isResSent, NextApiRequest, NextApiResponse } from '../lib/utils'
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import { apiResolver, tryGetPreviewData, __ApiPreviewProps } from './api-utils'
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import loadConfig, { isTargetLikeServerless } from './config'
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import pathMatch from './lib/path-match'
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import { recursiveReadDirSync } from './lib/recursive-readdir-sync'
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import { loadComponents, LoadComponentsReturnType } from './load-components'
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import { normalizePagePath } from './normalize-page-path'
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import { RenderOpts, RenderOptsPartial, renderToHTML } from './render'
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import { getPagePath } from './require'
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import Router, {
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DynamicRoutes,
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PageChecker,
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Params,
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prepareDestination,
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route,
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Route,
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} from './router'
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import { sendHTML } from './send-html'
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import { sendPayload } from './send-payload'
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import { serveStatic } from './serve-static'
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import {
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getFallback,
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getSprCache,
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initializeSprCache,
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setSprCache,
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} from './spr-cache'
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import { isBlockedPage } from './utils'
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import { loadEnvConfig } from '../../lib/load-env-config'
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const getCustomRouteMatcher = pathMatch(true)
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type NextConfig = any
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type Middleware = (
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req: IncomingMessage,
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res: ServerResponse,
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next: (err?: Error) => void
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) => void
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type FindComponentsResult = {
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components: LoadComponentsReturnType
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query: ParsedUrlQuery
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}
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export type ServerConstructor = {
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/**
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* Where the Next project is located - @default '.'
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*/
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dir?: string
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staticMarkup?: boolean
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/**
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* Hide error messages containing server information - @default false
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*/
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quiet?: boolean
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/**
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* Object what you would use in next.config.js - @default {}
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*/
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conf?: NextConfig
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dev?: boolean
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customServer?: boolean
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}
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export default class Server {
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dir: string
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quiet: boolean
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nextConfig: NextConfig
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distDir: string
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pagesDir?: string
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publicDir: string
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hasStaticDir: boolean
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serverBuildDir: string
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pagesManifest?: { [name: string]: string }
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buildId: string
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renderOpts: {
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poweredByHeader: boolean
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staticMarkup: boolean
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buildId: string
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generateEtags: boolean
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runtimeConfig?: { [key: string]: any }
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assetPrefix?: string
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canonicalBase: string
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documentMiddlewareEnabled: boolean
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hasCssMode: boolean
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dev?: boolean
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previewProps: __ApiPreviewProps
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customServer?: boolean
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ampOptimizerConfig?: { [key: string]: any }
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}
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private compression?: Middleware
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private onErrorMiddleware?: ({ err }: { err: Error }) => Promise<void>
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router: Router
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protected dynamicRoutes?: DynamicRoutes
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protected customRoutes?: {
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rewrites: Rewrite[]
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redirects: Redirect[]
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headers: Header[]
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}
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protected staticPathsWorker?: import('jest-worker').default & {
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loadStaticPaths: typeof import('../../server/static-paths-worker').loadStaticPaths
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}
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public constructor({
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dir = '.',
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staticMarkup = false,
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quiet = false,
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conf = null,
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dev = false,
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customServer = true,
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}: ServerConstructor = {}) {
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this.dir = resolve(dir)
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this.quiet = quiet
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const phase = this.currentPhase()
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loadEnvConfig(this.dir, dev)
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this.nextConfig = loadConfig(phase, this.dir, conf)
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this.distDir = join(this.dir, this.nextConfig.distDir)
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this.publicDir = join(this.dir, CLIENT_PUBLIC_FILES_PATH)
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this.hasStaticDir = fs.existsSync(join(this.dir, 'static'))
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// Only serverRuntimeConfig needs the default
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// publicRuntimeConfig gets it's default in client/index.js
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const {
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serverRuntimeConfig = {},
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publicRuntimeConfig,
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assetPrefix,
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generateEtags,
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compress,
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} = this.nextConfig
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this.buildId = this.readBuildId()
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this.renderOpts = {
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poweredByHeader: this.nextConfig.poweredByHeader,
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canonicalBase: this.nextConfig.amp.canonicalBase,
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documentMiddlewareEnabled: this.nextConfig.experimental
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.documentMiddleware,
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hasCssMode: this.nextConfig.experimental.css,
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staticMarkup,
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buildId: this.buildId,
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generateEtags,
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previewProps: this.getPreviewProps(),
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customServer: customServer === true ? true : undefined,
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ampOptimizerConfig: this.nextConfig.experimental.amp?.optimizer,
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}
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// Only the `publicRuntimeConfig` key is exposed to the client side
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// It'll be rendered as part of __NEXT_DATA__ on the client side
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if (Object.keys(publicRuntimeConfig).length > 0) {
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this.renderOpts.runtimeConfig = publicRuntimeConfig
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}
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if (compress && this.nextConfig.target === 'server') {
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this.compression = compression() as Middleware
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}
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// Initialize next/config with the environment configuration
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envConfig.setConfig({
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serverRuntimeConfig,
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publicRuntimeConfig,
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})
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this.serverBuildDir = join(
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this.distDir,
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this._isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY
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)
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const pagesManifestPath = join(this.serverBuildDir, PAGES_MANIFEST)
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if (!dev) {
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this.pagesManifest = require(pagesManifestPath)
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}
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this.router = new Router(this.generateRoutes())
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this.setAssetPrefix(assetPrefix)
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// call init-server middleware, this is also handled
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// individually in serverless bundles when deployed
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if (!dev && this.nextConfig.experimental.plugins) {
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const initServer = require(join(this.serverBuildDir, 'init-server.js'))
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.default
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this.onErrorMiddleware = require(join(
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this.serverBuildDir,
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'on-error-server.js'
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)).default
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initServer()
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}
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initializeSprCache({
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dev,
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distDir: this.distDir,
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pagesDir: join(
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this.distDir,
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this._isLikeServerless
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? SERVERLESS_DIRECTORY
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: `${SERVER_DIRECTORY}/static/${this.buildId}`,
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'pages'
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),
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flushToDisk: this.nextConfig.experimental.sprFlushToDisk,
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})
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}
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protected currentPhase(): string {
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return PHASE_PRODUCTION_SERVER
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}
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private logError(err: Error): void {
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if (this.onErrorMiddleware) {
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this.onErrorMiddleware({ err })
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}
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if (this.quiet) return
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// tslint:disable-next-line
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console.error(err)
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}
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private async handleRequest(
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req: IncomingMessage,
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res: ServerResponse,
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parsedUrl?: UrlWithParsedQuery
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): Promise<void> {
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|
// Parse url if parsedUrl not provided
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|
if (!parsedUrl || typeof parsedUrl !== 'object') {
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const url: any = req.url
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parsedUrl = parseUrl(url, true)
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}
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// Parse the querystring ourselves if the user doesn't handle querystring parsing
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if (typeof parsedUrl.query === 'string') {
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parsedUrl.query = parseQs(parsedUrl.query)
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}
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if (parsedUrl.pathname!.startsWith(this.nextConfig.experimental.basePath)) {
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// If replace ends up replacing the full url it'll be `undefined`, meaning we have to default it to `/`
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parsedUrl.pathname =
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parsedUrl.pathname!.replace(
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this.nextConfig.experimental.basePath,
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''
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) || '/'
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req.url = req.url!.replace(this.nextConfig.experimental.basePath, '')
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}
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res.statusCode = 200
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try {
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return await this.run(req, res, parsedUrl)
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} catch (err) {
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this.logError(err)
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res.statusCode = 500
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res.end('Internal Server Error')
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}
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}
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public getRequestHandler() {
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return this.handleRequest.bind(this)
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}
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public setAssetPrefix(prefix?: string) {
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this.renderOpts.assetPrefix = prefix ? prefix.replace(/\/$/, '') : ''
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}
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// Backwards compatibility
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|
public async prepare(): Promise<void> {}
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// Backwards compatibility
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protected async close(): Promise<void> {}
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protected setImmutableAssetCacheControl(res: ServerResponse) {
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res.setHeader('Cache-Control', 'public, max-age=31536000, immutable')
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}
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protected getCustomRoutes() {
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return require(join(this.distDir, ROUTES_MANIFEST))
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}
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private _cachedPreviewManifest: PrerenderManifest | undefined
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protected getPrerenderManifest(): PrerenderManifest {
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if (this._cachedPreviewManifest) {
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return this._cachedPreviewManifest
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|
}
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const manifest = require(join(this.distDir, PRERENDER_MANIFEST))
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|
return (this._cachedPreviewManifest = manifest)
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}
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|
protected getPreviewProps(): __ApiPreviewProps {
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|
return this.getPrerenderManifest().preview
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}
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|
protected generateRoutes(): {
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headers: Route[]
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|
rewrites: Route[]
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|
fsRoutes: Route[]
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|
redirects: Route[]
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|
catchAllRoute: Route
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|
pageChecker: PageChecker
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|
useFileSystemPublicRoutes: boolean
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|
dynamicRoutes: DynamicRoutes | undefined
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|
} {
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|
this.customRoutes = this.getCustomRoutes()
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|
const publicRoutes = fs.existsSync(this.publicDir)
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? this.generatePublicRoutes()
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: []
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|
const staticFilesRoute = this.hasStaticDir
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? [
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{
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|
// It's very important to keep this route's param optional.
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|
// (but it should support as many params as needed, separated by '/')
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// Otherwise this will lead to a pretty simple DOS attack.
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|
// See more: https://github.com/zeit/next.js/issues/2617
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match: route('/static/:path*'),
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|
name: 'static catchall',
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|
fn: async (req, res, params, parsedUrl) => {
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|
const p = join(
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|
this.dir,
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|
'static',
|
|
...(params.path || []).map(encodeURIComponent)
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|
)
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|
await this.serveStatic(req, res, p, parsedUrl)
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|
return {
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|
finished: true,
|
|
}
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|
},
|
|
} as Route,
|
|
]
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|
: []
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|
|
let headers: Route[] = []
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|
let rewrites: Route[] = []
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|
let redirects: Route[] = []
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|
const fsRoutes: Route[] = [
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|
{
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match: route('/_next/static/:path*'),
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|
type: 'route',
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name: '_next/static catchall',
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|
fn: async (req, res, params, parsedUrl) => {
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|
// The commons folder holds commonschunk files
|
|
// The chunks folder holds dynamic entries
|
|
// The buildId folder holds pages and potentially other assets. As buildId changes per build it can be long-term cached.
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|
|
// make sure to 404 for /_next/static itself
|
|
if (!params.path) {
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await this.render404(req, res, parsedUrl)
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return {
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|
finished: true,
|
|
}
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|
}
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|
|
|
if (
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params.path[0] === CLIENT_STATIC_FILES_RUNTIME ||
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params.path[0] === 'chunks' ||
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params.path[0] === 'css' ||
|
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params.path[0] === 'media' ||
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params.path[0] === this.buildId
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) {
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this.setImmutableAssetCacheControl(res)
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|
}
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|
const p = join(
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this.distDir,
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CLIENT_STATIC_FILES_PATH,
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|
...(params.path || [])
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)
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|
await this.serveStatic(req, res, p, parsedUrl)
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|
return {
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|
finished: true,
|
|
}
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|
},
|
|
},
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|
{
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|
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) {
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await this.render404(req, res, _parsedUrl)
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return {
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|
finished: true,
|
|
}
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|
}
|
|
// remove buildId from URL
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|
params.path.shift()
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|
|
// 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
|
|
const pathname = `/${params.path.join('/')}`
|
|
.replace(/\.json$/, '')
|
|
.replace(/\/index$/, '/')
|
|
|
|
req.url = pathname
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|
const parsedUrl = parseUrl(pathname, true)
|
|
await this.render(
|
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req,
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|
res,
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|
pathname,
|
|
{ ..._parsedUrl.query, _nextDataReq: '1' },
|
|
parsedUrl
|
|
)
|
|
return {
|
|
finished: true,
|
|
}
|
|
},
|
|
},
|
|
{
|
|
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,
|
|
]
|
|
|
|
if (this.customRoutes) {
|
|
const getCustomRoute = (
|
|
r: Rewrite | Redirect | Header,
|
|
type: RouteType
|
|
) =>
|
|
({
|
|
...r,
|
|
type,
|
|
match: getCustomRouteMatcher(r.source),
|
|
name: type,
|
|
fn: async (req, res, params, parsedUrl) => ({ finished: false }),
|
|
} as Route & Rewrite & Header)
|
|
|
|
// Headers come very first
|
|
headers = this.customRoutes.headers.map(r => {
|
|
const route = getCustomRoute(r, 'header')
|
|
return {
|
|
match: route.match,
|
|
type: route.type,
|
|
name: `${route.type} ${route.source} header route`,
|
|
fn: async (_req, res, _params, _parsedUrl) => {
|
|
for (const header of (route as Header).headers) {
|
|
res.setHeader(header.key, header.value)
|
|
}
|
|
return { finished: false }
|
|
},
|
|
} as Route
|
|
})
|
|
|
|
redirects = this.customRoutes.redirects.map(redirect => {
|
|
const route = getCustomRoute(redirect, 'redirect')
|
|
return {
|
|
type: route.type,
|
|
match: route.match,
|
|
statusCode: route.statusCode,
|
|
name: `Redirect route`,
|
|
fn: async (_req, res, params, _parsedUrl) => {
|
|
const { parsedDestination } = prepareDestination(
|
|
route.destination,
|
|
params,
|
|
true
|
|
)
|
|
const updatedDestination = formatUrl(parsedDestination)
|
|
|
|
res.setHeader('Location', updatedDestination)
|
|
res.statusCode = getRedirectStatus(route as Redirect)
|
|
|
|
// Since IE11 doesn't support the 308 header add backwards
|
|
// compatibility using refresh header
|
|
if (res.statusCode === 308) {
|
|
res.setHeader('Refresh', `0;url=${updatedDestination}`)
|
|
}
|
|
|
|
res.end()
|
|
return {
|
|
finished: true,
|
|
}
|
|
},
|
|
} as Route
|
|
})
|
|
|
|
rewrites = this.customRoutes.rewrites.map(rewrite => {
|
|
const route = getCustomRoute(rewrite, 'rewrite')
|
|
return {
|
|
check: true,
|
|
type: route.type,
|
|
name: `Rewrite route`,
|
|
match: route.match,
|
|
fn: async (req, res, params, _parsedUrl) => {
|
|
const { newUrl, parsedDestination } = prepareDestination(
|
|
route.destination,
|
|
params
|
|
)
|
|
|
|
// external rewrite, proxy it
|
|
if (parsedDestination.protocol) {
|
|
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)._nextDidRewrite = true
|
|
|
|
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) => {
|
|
const { pathname, query } = parsedUrl
|
|
if (!pathname) {
|
|
throw new Error('pathname is undefined')
|
|
}
|
|
|
|
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,
|
|
pageChecker: this.hasPage.bind(this),
|
|
}
|
|
}
|
|
|
|
private async getPagePath(pathname: 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
|
|
) {
|
|
return false
|
|
}
|
|
|
|
// Used to build API page in development
|
|
protected async ensureApiPage(pathname: string) {}
|
|
|
|
/**
|
|
* 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
|
|
) {
|
|
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)
|
|
|
|
const builtPagePath = await this.getPagePath(page)
|
|
const pageModule = 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,
|
|
this.onErrorMiddleware
|
|
)
|
|
return true
|
|
}
|
|
|
|
protected generatePublicRoutes(): Route[] {
|
|
const publicFiles = new Set(
|
|
recursiveReadDirSync(this.publicDir).map(p => p.replace(/\\/g, '/'))
|
|
)
|
|
|
|
return [
|
|
{
|
|
match: route('/:path*'),
|
|
name: 'public folder catchall',
|
|
fn: async (req, res, params, parsedUrl) => {
|
|
const pathParts: string[] = params.path || []
|
|
const path = `/${pathParts.join('/')}`
|
|
|
|
if (publicFiles.has(path)) {
|
|
await this.serveStatic(
|
|
req,
|
|
res,
|
|
// we need to re-encode it since send decodes it
|
|
join(this.publicDir, ...pathParts.map(encodeURIComponent)),
|
|
parsedUrl
|
|
)
|
|
return {
|
|
finished: true,
|
|
}
|
|
}
|
|
return {
|
|
finished: false,
|
|
}
|
|
},
|
|
} as Route,
|
|
]
|
|
}
|
|
|
|
protected getDynamicRoutes() {
|
|
const dynamicRoutedPages = Object.keys(this.pagesManifest!).filter(
|
|
isDynamicRoute
|
|
)
|
|
return getSortedRoutes(dynamicRoutedPages).map(page => ({
|
|
page,
|
|
match: getRouteMatcher(getRouteRegex(page)),
|
|
}))
|
|
}
|
|
|
|
private handleCompression(req: IncomingMessage, res: ServerResponse) {
|
|
if (this.compression) {
|
|
this.compression(req, res, () => {})
|
|
}
|
|
}
|
|
|
|
protected async run(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
parsedUrl: UrlWithParsedQuery
|
|
) {
|
|
this.handleCompression(req, res)
|
|
|
|
try {
|
|
const matched = await this.router.execute(req, res, parsedUrl)
|
|
if (matched) {
|
|
return
|
|
}
|
|
} catch (err) {
|
|
if (err.code === 'DECODE_FAILED') {
|
|
res.statusCode = 400
|
|
return this.renderError(null, req, res, '/_error', {})
|
|
}
|
|
throw err
|
|
}
|
|
|
|
await this.render404(req, res, parsedUrl)
|
|
}
|
|
|
|
protected async sendHTML(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
html: string
|
|
) {
|
|
const { generateEtags, poweredByHeader } = this.renderOpts
|
|
return sendHTML(req, res, html, { generateEtags, poweredByHeader })
|
|
}
|
|
|
|
public async render(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
pathname: string,
|
|
query: ParsedUrlQuery = {},
|
|
parsedUrl?: UrlWithParsedQuery
|
|
): Promise<void> {
|
|
const url: any = req.url
|
|
|
|
if (
|
|
url.match(/^\/_next\//) ||
|
|
(this.hasStaticDir && url.match(/^\/static\//))
|
|
) {
|
|
return this.handleRequest(req, res, parsedUrl)
|
|
}
|
|
|
|
if (isBlockedPage(pathname)) {
|
|
return this.render404(req, res, parsedUrl)
|
|
}
|
|
|
|
const html = await this.renderToHTML(req, res, pathname, query)
|
|
// Request was ended by the user
|
|
if (html === null) {
|
|
return
|
|
}
|
|
|
|
return this.sendHTML(req, res, html)
|
|
}
|
|
|
|
private async findPageComponents(
|
|
pathname: string,
|
|
query: ParsedUrlQuery = {},
|
|
params: Params | null = null
|
|
): Promise<FindComponentsResult | null> {
|
|
const paths = [
|
|
// try serving a static AMP version first
|
|
query.amp ? normalizePagePath(pathname) + '.amp' : null,
|
|
pathname,
|
|
].filter(Boolean)
|
|
for (const pagePath of paths) {
|
|
try {
|
|
const components = await loadComponents(
|
|
this.distDir,
|
|
this.buildId,
|
|
pagePath!,
|
|
!this.renderOpts.dev && this._isLikeServerless
|
|
)
|
|
return {
|
|
components,
|
|
query: {
|
|
...(components.getStaticProps
|
|
? { _nextDataReq: query._nextDataReq, amp: query.amp }
|
|
: query),
|
|
...(params || {}),
|
|
},
|
|
}
|
|
} catch (err) {
|
|
if (err.code !== 'ENOENT') throw err
|
|
}
|
|
}
|
|
return null
|
|
}
|
|
|
|
private async getStaticPaths(
|
|
pathname: string
|
|
): Promise<{
|
|
staticPaths: string[] | undefined
|
|
hasStaticFallback: boolean
|
|
}> {
|
|
// we lazy load the staticPaths to prevent the user
|
|
// from waiting on them for the page to load in dev mode
|
|
let staticPaths: string[] | undefined
|
|
let hasStaticFallback = false
|
|
|
|
if (!this.renderOpts.dev) {
|
|
// `staticPaths` is intentionally set to `undefined` as it should've
|
|
// been caught when checking disk data.
|
|
staticPaths = undefined
|
|
|
|
// Read whether or not fallback should exist from the manifest.
|
|
hasStaticFallback =
|
|
typeof this.getPrerenderManifest().dynamicRoutes[pathname].fallback ===
|
|
'string'
|
|
} else {
|
|
const __getStaticPaths = async () => {
|
|
const paths = await this.staticPathsWorker!.loadStaticPaths(
|
|
this.distDir,
|
|
this.buildId,
|
|
pathname,
|
|
!this.renderOpts.dev && this._isLikeServerless
|
|
)
|
|
return paths
|
|
}
|
|
;({ paths: staticPaths, fallback: hasStaticFallback } = (
|
|
await withCoalescedInvoke(__getStaticPaths)(
|
|
`staticPaths-${pathname}`,
|
|
[]
|
|
)
|
|
).value)
|
|
}
|
|
|
|
return { staticPaths, hasStaticFallback }
|
|
}
|
|
|
|
private async renderToHTMLWithComponents(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
pathname: string,
|
|
{ components, query }: FindComponentsResult,
|
|
opts: RenderOptsPartial
|
|
): Promise<string | null> {
|
|
// we need to ensure the status code if /404 is visited directly
|
|
if (pathname === '/404') {
|
|
res.statusCode = 404
|
|
}
|
|
|
|
// handle static page
|
|
if (typeof components.Component === 'string') {
|
|
return components.Component
|
|
}
|
|
|
|
// check request state
|
|
const isLikeServerless =
|
|
typeof components.Component === 'object' &&
|
|
typeof (components.Component as any).renderReqToHTML === 'function'
|
|
const isSSG = !!components.getStaticProps
|
|
const isServerProps = !!components.getServerSideProps
|
|
const hasStaticPaths = !!components.getStaticPaths
|
|
|
|
if (isSSG && query.amp) {
|
|
pathname += `.amp`
|
|
}
|
|
|
|
if (!query.amp) {
|
|
delete query.amp
|
|
}
|
|
|
|
// Toggle whether or not this is a Data request
|
|
const isDataReq = !!query._nextDataReq
|
|
delete query._nextDataReq
|
|
|
|
// Serverless requests need its URL transformed back into the original
|
|
// request path (to emulate lambda behavior in production)
|
|
if (isLikeServerless && isDataReq) {
|
|
let { pathname } = parseUrl(req.url || '', true)
|
|
pathname = !pathname || pathname === '/' ? '/index' : pathname
|
|
req.url = formatUrl({
|
|
pathname: `/_next/data/${this.buildId}${pathname}.json`,
|
|
query,
|
|
})
|
|
}
|
|
|
|
let previewData: string | false | object | undefined
|
|
let isPreviewMode = false
|
|
|
|
if (isServerProps || isSSG) {
|
|
previewData = tryGetPreviewData(req, res, this.renderOpts.previewProps)
|
|
isPreviewMode = previewData !== false
|
|
}
|
|
|
|
// non-spr requests should render like normal
|
|
if (!isSSG) {
|
|
// handle serverless
|
|
if (isLikeServerless) {
|
|
if (isDataReq) {
|
|
const renderResult = await (components.Component as any).renderReqToHTML(
|
|
req,
|
|
res,
|
|
'passthrough'
|
|
)
|
|
|
|
sendPayload(
|
|
res,
|
|
JSON.stringify(renderResult?.renderOpts?.pageData),
|
|
'json',
|
|
!this.renderOpts.dev
|
|
? {
|
|
private: isPreviewMode,
|
|
stateful: true, // non-SSG data request
|
|
}
|
|
: undefined
|
|
)
|
|
return null
|
|
}
|
|
prepareServerlessUrl(req, query)
|
|
return (components.Component as any).renderReqToHTML(req, res)
|
|
}
|
|
|
|
if (isDataReq && isServerProps) {
|
|
const props = await renderToHTML(req, res, pathname, query, {
|
|
...components,
|
|
...opts,
|
|
isDataReq,
|
|
})
|
|
sendPayload(
|
|
res,
|
|
JSON.stringify(props),
|
|
'json',
|
|
!this.renderOpts.dev
|
|
? {
|
|
private: isPreviewMode,
|
|
stateful: true, // GSSP data request
|
|
}
|
|
: undefined
|
|
)
|
|
return null
|
|
}
|
|
|
|
const html = await renderToHTML(req, res, pathname, query, {
|
|
...components,
|
|
...opts,
|
|
})
|
|
|
|
if (html && isServerProps) {
|
|
sendPayload(res, html, 'html', {
|
|
private: isPreviewMode,
|
|
stateful: true, // GSSP request
|
|
})
|
|
return null
|
|
}
|
|
|
|
return html
|
|
}
|
|
|
|
// Compute the SPR cache key
|
|
const urlPathname = `${parseUrl(req.url || '').pathname!}${
|
|
query.amp ? '.amp' : ''
|
|
}`
|
|
const ssgCacheKey = isPreviewMode
|
|
? `__` + nanoid() // Preview mode uses a throw away key to not coalesce preview invokes
|
|
: urlPathname
|
|
|
|
// Complete the response with cached data if its present
|
|
const cachedData = isPreviewMode
|
|
? // Preview data bypasses the cache
|
|
undefined
|
|
: await getSprCache(ssgCacheKey)
|
|
if (cachedData) {
|
|
const data = isDataReq
|
|
? JSON.stringify(cachedData.pageData)
|
|
: cachedData.html
|
|
|
|
sendPayload(
|
|
res,
|
|
data,
|
|
isDataReq ? 'json' : 'html',
|
|
!this.renderOpts.dev
|
|
? {
|
|
private: isPreviewMode,
|
|
stateful: false, // GSP response
|
|
revalidate:
|
|
cachedData.curRevalidate !== undefined
|
|
? cachedData.curRevalidate
|
|
: /* default to minimum revalidate (this should be an invariant) */ 1,
|
|
}
|
|
: undefined
|
|
)
|
|
|
|
// Stop the request chain here if the data we sent was up-to-date
|
|
if (!cachedData.isStale) {
|
|
return null
|
|
}
|
|
}
|
|
|
|
// If we're here, that means data is missing or it's stale.
|
|
|
|
const doRender = withCoalescedInvoke(async function(): Promise<{
|
|
html: string | null
|
|
pageData: any
|
|
sprRevalidate: number | false
|
|
}> {
|
|
let pageData: any
|
|
let html: string | null
|
|
let sprRevalidate: number | false
|
|
|
|
let renderResult
|
|
// handle serverless
|
|
if (isLikeServerless) {
|
|
renderResult = await (components.Component as any).renderReqToHTML(
|
|
req,
|
|
res,
|
|
'passthrough'
|
|
)
|
|
|
|
html = renderResult.html
|
|
pageData = renderResult.renderOpts.pageData
|
|
sprRevalidate = renderResult.renderOpts.revalidate
|
|
} else {
|
|
const renderOpts: RenderOpts = {
|
|
...components,
|
|
...opts,
|
|
}
|
|
renderResult = await renderToHTML(req, res, pathname, query, renderOpts)
|
|
|
|
html = renderResult
|
|
// TODO: change this to a different passing mechanism
|
|
pageData = (renderOpts as any).pageData
|
|
sprRevalidate = (renderOpts as any).revalidate
|
|
}
|
|
|
|
return { html, pageData, sprRevalidate }
|
|
})
|
|
|
|
const isProduction = !this.renderOpts.dev
|
|
const isDynamicPathname = isDynamicRoute(pathname)
|
|
const didRespond = isResSent(res)
|
|
|
|
const { staticPaths, hasStaticFallback } = hasStaticPaths
|
|
? await this.getStaticPaths(pathname)
|
|
: { staticPaths: undefined, hasStaticFallback: false }
|
|
|
|
// const isForcedBlocking =
|
|
// req.headers['X-Prerender-Bypass-Mode'] !== 'Blocking'
|
|
|
|
// When we did not respond from cache, we need to choose to block on
|
|
// rendering or return a skeleton.
|
|
//
|
|
// * Data requests always block.
|
|
//
|
|
// * Preview mode toggles all pages to be resolved in a blocking manner.
|
|
//
|
|
// * Non-dynamic pages should block (though this is an impossible
|
|
// case in production).
|
|
//
|
|
// * Dynamic pages should return their skeleton if not defined in
|
|
// getStaticPaths, then finish the data request on the client-side.
|
|
//
|
|
if (
|
|
!didRespond &&
|
|
!isDataReq &&
|
|
!isPreviewMode &&
|
|
isDynamicPathname &&
|
|
// Development should trigger fallback when the path is not in
|
|
// `getStaticPaths`
|
|
(isProduction || !staticPaths || !staticPaths.includes(urlPathname))
|
|
) {
|
|
if (
|
|
// In development, fall through to render to handle missing
|
|
// getStaticPaths.
|
|
(isProduction || staticPaths) &&
|
|
// When fallback isn't present, abort this render so we 404
|
|
!hasStaticFallback
|
|
) {
|
|
throw new NoFallbackError()
|
|
}
|
|
|
|
let html: string
|
|
|
|
// Production already emitted the fallback as static HTML.
|
|
if (isProduction) {
|
|
html = await getFallback(pathname)
|
|
}
|
|
// We need to generate the fallback on-demand for development.
|
|
else {
|
|
query.__nextFallback = 'true'
|
|
if (isLikeServerless) {
|
|
prepareServerlessUrl(req, query)
|
|
const renderResult = await (components.Component as any).renderReqToHTML(
|
|
req,
|
|
res,
|
|
'passthrough'
|
|
)
|
|
html = renderResult.html
|
|
} else {
|
|
html = (await renderToHTML(req, res, pathname, query, {
|
|
...components,
|
|
...opts,
|
|
})) as string
|
|
}
|
|
}
|
|
|
|
sendPayload(res, html, 'html')
|
|
}
|
|
|
|
const {
|
|
isOrigin,
|
|
value: { html, pageData, sprRevalidate },
|
|
} = await doRender(ssgCacheKey, [])
|
|
if (!isResSent(res)) {
|
|
sendPayload(
|
|
res,
|
|
isDataReq ? JSON.stringify(pageData) : html,
|
|
isDataReq ? 'json' : 'html',
|
|
!this.renderOpts.dev
|
|
? {
|
|
private: isPreviewMode,
|
|
stateful: false, // GSP response
|
|
revalidate: sprRevalidate,
|
|
}
|
|
: undefined
|
|
)
|
|
}
|
|
|
|
// Update the SPR cache if the head request
|
|
if (isOrigin) {
|
|
// Preview mode should not be stored in cache
|
|
if (!isPreviewMode) {
|
|
await setSprCache(ssgCacheKey, { html: html!, pageData }, sprRevalidate)
|
|
}
|
|
}
|
|
|
|
return null
|
|
}
|
|
|
|
public async renderToHTML(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
pathname: string,
|
|
query: ParsedUrlQuery = {}
|
|
): Promise<string | null> {
|
|
try {
|
|
const result = await this.findPageComponents(pathname, query)
|
|
if (result) {
|
|
try {
|
|
return await this.renderToHTMLWithComponents(
|
|
req,
|
|
res,
|
|
pathname,
|
|
result,
|
|
{ ...this.renderOpts }
|
|
)
|
|
} catch (err) {
|
|
if (!(err instanceof NoFallbackError)) {
|
|
throw err
|
|
}
|
|
}
|
|
}
|
|
|
|
if (this.dynamicRoutes) {
|
|
for (const dynamicRoute of this.dynamicRoutes) {
|
|
const params = dynamicRoute.match(pathname)
|
|
if (!params) {
|
|
continue
|
|
}
|
|
|
|
const result = await this.findPageComponents(
|
|
dynamicRoute.page,
|
|
query,
|
|
params
|
|
)
|
|
if (result) {
|
|
try {
|
|
return await this.renderToHTMLWithComponents(
|
|
req,
|
|
res,
|
|
dynamicRoute.page,
|
|
result,
|
|
{ ...this.renderOpts, params }
|
|
)
|
|
} catch (err) {
|
|
if (!(err instanceof NoFallbackError)) {
|
|
throw err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} catch (err) {
|
|
this.logError(err)
|
|
res.statusCode = 500
|
|
return await this.renderErrorToHTML(err, req, res, pathname, query)
|
|
}
|
|
|
|
res.statusCode = 404
|
|
return await this.renderErrorToHTML(null, req, res, pathname, query)
|
|
}
|
|
|
|
public async renderError(
|
|
err: Error | null,
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
pathname: string,
|
|
query: ParsedUrlQuery = {}
|
|
): Promise<void> {
|
|
res.setHeader(
|
|
'Cache-Control',
|
|
'no-cache, no-store, max-age=0, must-revalidate'
|
|
)
|
|
const html = await this.renderErrorToHTML(err, req, res, pathname, query)
|
|
if (html === null) {
|
|
return
|
|
}
|
|
return this.sendHTML(req, res, html)
|
|
}
|
|
|
|
public async renderErrorToHTML(
|
|
err: Error | null,
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
_pathname: string,
|
|
query: ParsedUrlQuery = {}
|
|
) {
|
|
let result: null | FindComponentsResult = null
|
|
|
|
const is404 = res.statusCode === 404
|
|
let using404Page = false
|
|
|
|
// use static 404 page if available and is 404 response
|
|
if (is404) {
|
|
result = await this.findPageComponents('/404')
|
|
using404Page = result !== null
|
|
}
|
|
|
|
if (!result) {
|
|
result = await this.findPageComponents('/_error', query)
|
|
}
|
|
|
|
let html: string | null
|
|
try {
|
|
try {
|
|
html = await this.renderToHTMLWithComponents(
|
|
req,
|
|
res,
|
|
using404Page ? '/404' : '/_error',
|
|
result!,
|
|
{
|
|
...this.renderOpts,
|
|
err,
|
|
}
|
|
)
|
|
} catch (err) {
|
|
if (err instanceof NoFallbackError) {
|
|
throw new Error('invariant: failed to render error page')
|
|
}
|
|
throw err
|
|
}
|
|
} catch (err) {
|
|
console.error(err)
|
|
res.statusCode = 500
|
|
html = 'Internal Server Error'
|
|
}
|
|
return html
|
|
}
|
|
|
|
public async render404(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
parsedUrl?: UrlWithParsedQuery
|
|
): Promise<void> {
|
|
const url: any = req.url
|
|
const { pathname, query } = parsedUrl ? parsedUrl : parseUrl(url, true)
|
|
res.statusCode = 404
|
|
return this.renderError(null, req, res, pathname!, query)
|
|
}
|
|
|
|
public async serveStatic(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
path: string,
|
|
parsedUrl?: UrlWithParsedQuery
|
|
): Promise<void> {
|
|
if (!this.isServeableUrl(path)) {
|
|
return this.render404(req, res, parsedUrl)
|
|
}
|
|
|
|
if (!(req.method === 'GET' || req.method === 'HEAD')) {
|
|
res.statusCode = 405
|
|
res.setHeader('Allow', ['GET', 'HEAD'])
|
|
return this.renderError(null, req, res, path)
|
|
}
|
|
|
|
try {
|
|
await serveStatic(req, res, path)
|
|
} catch (err) {
|
|
if (err.code === 'ENOENT' || err.statusCode === 404) {
|
|
this.render404(req, res, parsedUrl)
|
|
} else if (err.statusCode === 412) {
|
|
res.statusCode = 412
|
|
return this.renderError(err, req, res, path)
|
|
} else {
|
|
throw err
|
|
}
|
|
}
|
|
}
|
|
|
|
private _validFilesystemPathSet: Set<string> | null = null
|
|
private getFilesystemPaths(): Set<string> {
|
|
if (this._validFilesystemPathSet) {
|
|
return this._validFilesystemPathSet
|
|
}
|
|
|
|
const pathUserFilesStatic = join(this.dir, 'static')
|
|
let userFilesStatic: string[] = []
|
|
if (this.hasStaticDir && fs.existsSync(pathUserFilesStatic)) {
|
|
userFilesStatic = recursiveReadDirSync(pathUserFilesStatic).map(f =>
|
|
join('.', 'static', f)
|
|
)
|
|
}
|
|
|
|
let userFilesPublic: string[] = []
|
|
if (this.publicDir && fs.existsSync(this.publicDir)) {
|
|
userFilesPublic = recursiveReadDirSync(this.publicDir).map(f =>
|
|
join('.', 'public', f)
|
|
)
|
|
}
|
|
|
|
let nextFilesStatic: string[] = []
|
|
nextFilesStatic = recursiveReadDirSync(
|
|
join(this.distDir, 'static')
|
|
).map(f => join('.', relative(this.dir, this.distDir), 'static', f))
|
|
|
|
return (this._validFilesystemPathSet = new Set<string>([
|
|
...nextFilesStatic,
|
|
...userFilesPublic,
|
|
...userFilesStatic,
|
|
]))
|
|
}
|
|
|
|
protected isServeableUrl(untrustedFileUrl: string): boolean {
|
|
// This method mimics what the version of `send` we use does:
|
|
// 1. decodeURIComponent:
|
|
// https://github.com/pillarjs/send/blob/0.17.1/index.js#L989
|
|
// https://github.com/pillarjs/send/blob/0.17.1/index.js#L518-L522
|
|
// 2. resolve:
|
|
// https://github.com/pillarjs/send/blob/de073ed3237ade9ff71c61673a34474b30e5d45b/index.js#L561
|
|
|
|
let decodedUntrustedFilePath: string
|
|
try {
|
|
// (1) Decode the URL so we have the proper file name
|
|
decodedUntrustedFilePath = decodeURIComponent(untrustedFileUrl)
|
|
} catch {
|
|
return false
|
|
}
|
|
|
|
// (2) Resolve "up paths" to determine real request
|
|
const untrustedFilePath = resolve(decodedUntrustedFilePath)
|
|
|
|
// don't allow null bytes anywhere in the file path
|
|
if (untrustedFilePath.indexOf('\0') !== -1) {
|
|
return false
|
|
}
|
|
|
|
// Check if .next/static, static and public are in the path.
|
|
// If not the path is not available.
|
|
if (
|
|
(untrustedFilePath.startsWith(join(this.distDir, 'static') + sep) ||
|
|
untrustedFilePath.startsWith(join(this.dir, 'static') + sep) ||
|
|
untrustedFilePath.startsWith(join(this.dir, 'public') + sep)) === false
|
|
) {
|
|
return false
|
|
}
|
|
|
|
// Check against the real filesystem paths
|
|
const filesystemUrls = this.getFilesystemPaths()
|
|
const resolved = relative(this.dir, untrustedFilePath)
|
|
return filesystemUrls.has(resolved)
|
|
}
|
|
|
|
protected readBuildId(): string {
|
|
const buildIdFile = join(this.distDir, BUILD_ID_FILE)
|
|
try {
|
|
return fs.readFileSync(buildIdFile, 'utf8').trim()
|
|
} catch (err) {
|
|
if (!fs.existsSync(buildIdFile)) {
|
|
throw new Error(
|
|
`Could not find a valid build in the '${this.distDir}' directory! Try building your app with 'next build' before starting the server.`
|
|
)
|
|
}
|
|
|
|
throw err
|
|
}
|
|
}
|
|
|
|
private get _isLikeServerless(): boolean {
|
|
return isTargetLikeServerless(this.nextConfig.target)
|
|
}
|
|
}
|
|
|
|
function prepareServerlessUrl(req: IncomingMessage, query: ParsedUrlQuery) {
|
|
const curUrl = parseUrl(req.url!, true)
|
|
req.url = formatUrl({
|
|
...curUrl,
|
|
search: undefined,
|
|
query: {
|
|
...curUrl.query,
|
|
...query,
|
|
},
|
|
})
|
|
}
|
|
|
|
class NoFallbackError extends Error {}
|