forked from vercel/next.js
/
next-dev-server.ts
1437 lines (1276 loc) · 44.5 KB
/
next-dev-server.ts
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import type { __ApiPreviewProps } from '../api-utils'
import type { CustomRoutes } from '../../lib/load-custom-routes'
import type { FindComponentsResult } from '../next-server'
import type { LoadComponentsReturnType } from '../load-components'
import type { Options as ServerOptions } from '../next-server'
import type { Params } from '../../shared/lib/router/utils/route-matcher'
import type { ParsedUrl } from '../../shared/lib/router/utils/parse-url'
import type { ParsedUrlQuery } from 'querystring'
import type { Server as HTTPServer } from 'http'
import type { UrlWithParsedQuery } from 'url'
import type { BaseNextRequest, BaseNextResponse } from '../base-http'
import type { MiddlewareRoutingItem, RoutingItem } from '../base-server'
import type { MiddlewareMatcher } from '../../build/analysis/get-page-static-info'
import crypto from 'crypto'
import fs from 'fs'
import { Worker } from 'next/dist/compiled/jest-worker'
import findUp from 'next/dist/compiled/find-up'
import { join as pathJoin, relative, resolve as pathResolve, sep } from 'path'
import React from 'react'
import Watchpack from 'next/dist/compiled/watchpack'
import { ampValidation } from '../../build/output'
import { PUBLIC_DIR_MIDDLEWARE_CONFLICT } from '../../lib/constants'
import { fileExists } from '../../lib/file-exists'
import { findPagesDir } from '../../lib/find-pages-dir'
import loadCustomRoutes from '../../lib/load-custom-routes'
import { verifyTypeScriptSetup } from '../../lib/verifyTypeScriptSetup'
import { verifyPartytownSetup } from '../../lib/verify-partytown-setup'
import {
PHASE_DEVELOPMENT_SERVER,
CLIENT_STATIC_FILES_PATH,
DEV_CLIENT_PAGES_MANIFEST,
DEV_MIDDLEWARE_MANIFEST,
COMPILER_NAMES,
} from '../../shared/lib/constants'
import Server, { WrappedBuildError } from '../next-server'
import { getRouteMatcher } from '../../shared/lib/router/utils/route-matcher'
import { getMiddlewareRouteMatcher } from '../../shared/lib/router/utils/middleware-route-matcher'
import { normalizePagePath } from '../../shared/lib/page-path/normalize-page-path'
import { absolutePathToPage } from '../../shared/lib/page-path/absolute-path-to-page'
import Router from '../router'
import { getPathMatch } from '../../shared/lib/router/utils/path-match'
import { pathHasPrefix } from '../../shared/lib/router/utils/path-has-prefix'
import { removePathPrefix } from '../../shared/lib/router/utils/remove-path-prefix'
import { eventCliSession } from '../../telemetry/events'
import { Telemetry } from '../../telemetry/storage'
import { setGlobal } from '../../trace'
import HotReloader from './hot-reloader'
import { findPageFile, isLayoutsLeafPage } from '../lib/find-page-file'
import { getNodeOptionsWithoutInspect } from '../lib/utils'
import {
UnwrapPromise,
withCoalescedInvoke,
} from '../../lib/coalesced-function'
import { loadDefaultErrorComponents } from '../load-components'
import { DecodeError, MiddlewareNotFoundError } from '../../shared/lib/utils'
import {
createOriginalStackFrame,
getErrorSource,
getSourceById,
parseStack,
} from 'next/dist/compiled/@next/react-dev-overlay/dist/middleware'
import * as Log from '../../build/output/log'
import isError, { getProperError } from '../../lib/is-error'
import { getRouteRegex } from '../../shared/lib/router/utils/route-regex'
import { getSortedRoutes, isDynamicRoute } from '../../shared/lib/router/utils'
import { runDependingOnPageType } from '../../build/entries'
import { NodeNextResponse, NodeNextRequest } from '../base-http/node'
import { getPageStaticInfo } from '../../build/analysis/get-page-static-info'
import { normalizePathSep } from '../../shared/lib/page-path/normalize-path-sep'
import { normalizeAppPath } from '../../shared/lib/router/utils/app-paths'
import {
getPossibleMiddlewareFilenames,
isMiddlewareFile,
NestedMiddlewareError,
} from '../../build/utils'
import { getDefineEnv } from '../../build/webpack-config'
import loadJsConfig from '../../build/load-jsconfig'
// Load ReactDevOverlay only when needed
let ReactDevOverlayImpl: React.FunctionComponent
const ReactDevOverlay = (props: any) => {
if (ReactDevOverlayImpl === undefined) {
ReactDevOverlayImpl =
require('next/dist/compiled/@next/react-dev-overlay/dist/client').ReactDevOverlay
}
return ReactDevOverlayImpl(props)
}
export interface Options extends ServerOptions {
/**
* Tells of Next.js is running from the `next dev` command
*/
isNextDevCommand?: boolean
}
export default class DevServer extends Server {
private devReady: Promise<void>
private setDevReady?: Function
private webpackWatcher?: Watchpack | null
private hotReloader?: HotReloader
private isCustomServer: boolean
protected sortedRoutes?: string[]
private addedUpgradeListener = false
private pagesDir?: string
private appDir?: string
private actualMiddlewareFile?: string
private middleware?: MiddlewareRoutingItem
private edgeFunctions?: RoutingItem[]
private verifyingTypeScript?: boolean
private usingTypeScript?: boolean
protected staticPathsWorker?: { [key: string]: any } & {
loadStaticPaths: typeof import('./static-paths-worker').loadStaticPaths
}
private getStaticPathsWorker(): { [key: string]: any } & {
loadStaticPaths: typeof import('./static-paths-worker').loadStaticPaths
} {
if (this.staticPathsWorker) {
return this.staticPathsWorker
}
this.staticPathsWorker = new Worker(
require.resolve('./static-paths-worker'),
{
maxRetries: 1,
numWorkers: this.nextConfig.experimental.cpus,
enableWorkerThreads: this.nextConfig.experimental.workerThreads,
forkOptions: {
env: {
...process.env,
// discard --inspect/--inspect-brk flags from process.env.NODE_OPTIONS. Otherwise multiple Node.js debuggers
// would be started if user launch Next.js in debugging mode. The number of debuggers is linked to
// the number of workers Next.js tries to launch. The only worker users are interested in debugging
// is the main Next.js one
NODE_OPTIONS: getNodeOptionsWithoutInspect(),
},
},
}
) as Worker & {
loadStaticPaths: typeof import('./static-paths-worker').loadStaticPaths
}
this.staticPathsWorker.getStdout().pipe(process.stdout)
this.staticPathsWorker.getStderr().pipe(process.stderr)
return this.staticPathsWorker
}
constructor(options: Options) {
super({ ...options, dev: true })
this.renderOpts.dev = true
;(this.renderOpts as any).ErrorDebug = ReactDevOverlay
this.devReady = new Promise((resolve) => {
this.setDevReady = resolve
})
;(this.renderOpts as any).ampSkipValidation =
this.nextConfig.experimental?.amp?.skipValidation ?? false
;(this.renderOpts as any).ampValidator = (
html: string,
pathname: string
) => {
const validatorPath =
this.nextConfig.experimental &&
this.nextConfig.experimental.amp &&
this.nextConfig.experimental.amp.validator
const AmpHtmlValidator =
require('next/dist/compiled/amphtml-validator') as typeof import('next/dist/compiled/amphtml-validator')
return AmpHtmlValidator.getInstance(validatorPath).then((validator) => {
const result = validator.validateString(html)
ampValidation(
pathname,
result.errors
.filter((e) => e.severity === 'ERROR')
.filter((e) => this._filterAmpDevelopmentScript(html, e)),
result.errors.filter((e) => e.severity !== 'ERROR')
)
})
}
if (fs.existsSync(pathJoin(this.dir, 'static'))) {
console.warn(
`The static directory has been deprecated in favor of the public directory. https://nextjs.org/docs/messages/static-dir-deprecated`
)
}
// setup upgrade listener eagerly when we can otherwise
// it will be done on the first request via req.socket.server
if (options.httpServer) {
this.setupWebSocketHandler(options.httpServer)
}
this.isCustomServer = !options.isNextDevCommand
// TODO: hot-reload root/pages dirs?
const { pages: pagesDir, appDir } = findPagesDir(
this.dir,
this.nextConfig.experimental.appDir
)
this.pagesDir = pagesDir
this.appDir = appDir
}
protected getBuildId(): string {
return 'development'
}
async addExportPathMapRoutes() {
// Makes `next export` exportPathMap work in development mode.
// So that the user doesn't have to define a custom server reading the exportPathMap
if (this.nextConfig.exportPathMap) {
console.log('Defining routes from exportPathMap')
const exportPathMap = await this.nextConfig.exportPathMap(
{},
{
dev: true,
dir: this.dir,
outDir: null,
distDir: this.distDir,
buildId: this.buildId,
}
) // In development we can't give a default path mapping
for (const path in exportPathMap) {
const { page, query = {} } = exportPathMap[path]
this.router.addFsRoute({
match: getPathMatch(path),
type: 'route',
name: `${path} exportpathmap route`,
fn: async (req, res, _params, parsedUrl) => {
const { query: urlQuery } = parsedUrl
Object.keys(urlQuery)
.filter((key) => query[key] === undefined)
.forEach((key) =>
console.warn(
`Url '${path}' defines a query parameter '${key}' that is missing in exportPathMap`
)
)
const mergedQuery = { ...urlQuery, ...query }
await this.render(req, res, page, mergedQuery, parsedUrl, true)
return {
finished: true,
}
},
})
}
}
}
async startWatcher(): Promise<void> {
if (this.webpackWatcher) {
return
}
const regexPageExtension = new RegExp(
`\\.+(?:${this.nextConfig.pageExtensions.join('|')})$`
)
let resolved = false
return new Promise(async (resolve, reject) => {
if (this.pagesDir) {
// Watchpack doesn't emit an event for an empty directory
fs.readdir(this.pagesDir, (_, files) => {
if (files?.length) {
return
}
if (!resolved) {
resolve()
resolved = true
}
})
}
const pages = this.pagesDir ? [this.pagesDir] : []
const app = this.appDir ? [this.appDir] : []
const directories = [...pages, ...app]
const files = this.pagesDir
? getPossibleMiddlewareFilenames(
pathJoin(this.pagesDir, '..'),
this.nextConfig.pageExtensions
)
: []
let nestedMiddleware: string[] = []
const envFiles = [
'.env.development.local',
'.env.local',
'.env.development',
'.env',
].map((file) => pathJoin(this.dir, file))
files.push(...envFiles)
// tsconfig/jsonfig paths hot-reloading
const tsconfigPaths = [
pathJoin(this.dir, 'tsconfig.json'),
pathJoin(this.dir, 'jsconfig.json'),
]
files.push(...tsconfigPaths)
const wp = (this.webpackWatcher = new Watchpack({
ignored: (pathname: string) => {
return (
!files.some((file) => file.startsWith(pathname)) &&
!directories.some((dir) => pathname.startsWith(dir))
)
},
}))
wp.watch({ directories: [this.dir], startTime: 0 })
const fileWatchTimes = new Map()
let enabledTypeScript = this.usingTypeScript
wp.on('aggregated', async () => {
let middlewareMatchers: MiddlewareMatcher[] | undefined
const routedPages: string[] = []
const knownFiles = wp.getTimeInfoEntries()
const appPaths: Record<string, string[]> = {}
const edgeRoutesSet = new Set<string>()
let envChange = false
let tsconfigChange = false
for (const [fileName, meta] of knownFiles) {
if (
!files.includes(fileName) &&
!directories.some((dir) => fileName.startsWith(dir))
) {
continue
}
const watchTime = fileWatchTimes.get(fileName)
const watchTimeChange = watchTime && watchTime !== meta?.timestamp
fileWatchTimes.set(fileName, meta.timestamp)
if (envFiles.includes(fileName)) {
if (watchTimeChange) {
envChange = true
}
continue
}
if (tsconfigPaths.includes(fileName)) {
if (fileName.endsWith('tsconfig.json')) {
enabledTypeScript = true
}
if (watchTimeChange) {
tsconfigChange = true
}
continue
}
if (
meta?.accuracy === undefined ||
!regexPageExtension.test(fileName)
) {
continue
}
const isAppPath = Boolean(
this.appDir &&
normalizePathSep(fileName).startsWith(
normalizePathSep(this.appDir)
)
)
const rootFile = absolutePathToPage(fileName, {
pagesDir: this.dir,
extensions: this.nextConfig.pageExtensions,
})
const staticInfo = await getPageStaticInfo({
pageFilePath: fileName,
nextConfig: this.nextConfig,
page: rootFile,
isDev: true,
})
if (isMiddlewareFile(rootFile)) {
this.actualMiddlewareFile = rootFile
middlewareMatchers = staticInfo.middleware?.matchers || [
{ regexp: '.*' },
]
continue
}
if (fileName.endsWith('.ts') || fileName.endsWith('.tsx')) {
enabledTypeScript = true
}
let pageName = absolutePathToPage(fileName, {
pagesDir: isAppPath ? this.appDir! : this.pagesDir!,
extensions: this.nextConfig.pageExtensions,
keepIndex: isAppPath,
})
if (isAppPath) {
if (!isLayoutsLeafPage(fileName)) {
continue
}
const originalPageName = pageName
pageName = normalizeAppPath(pageName) || '/'
if (!appPaths[pageName]) {
appPaths[pageName] = []
}
appPaths[pageName].push(originalPageName)
if (routedPages.includes(pageName)) {
continue
}
} else {
// /index is preserved for root folder
pageName = pageName.replace(/\/index$/, '') || '/'
}
/**
* If there is a middleware that is not declared in the root we will
* warn without adding it so it doesn't make its way into the system.
*/
if (/[\\\\/]_middleware$/.test(pageName)) {
nestedMiddleware.push(pageName)
continue
}
await runDependingOnPageType({
page: pageName,
pageRuntime: staticInfo.runtime,
onClient: () => {},
onServer: () => {
routedPages.push(pageName)
},
onEdgeServer: () => {
routedPages.push(pageName)
edgeRoutesSet.add(pageName)
},
})
}
if (!this.usingTypeScript && enabledTypeScript) {
// we tolerate the error here as this is best effort
// and the manual install command will be shown
await this.verifyTypeScript()
.then(() => {
tsconfigChange = true
})
.catch(() => {})
}
if (envChange || tsconfigChange) {
if (envChange) {
this.loadEnvConfig({ dev: true, forceReload: true })
}
let tsconfigResult:
| UnwrapPromise<ReturnType<typeof loadJsConfig>>
| undefined
if (tsconfigChange) {
try {
tsconfigResult = await loadJsConfig(this.dir, this.nextConfig)
} catch (_) {
/* do we want to log if there are syntax errors in tsconfig while editing? */
}
}
this.hotReloader?.activeConfigs?.forEach((config, idx) => {
const isClient = idx === 0
const isNodeServer = idx === 1
const isEdgeServer = idx === 2
const hasRewrites =
this.customRoutes.rewrites.afterFiles.length > 0 ||
this.customRoutes.rewrites.beforeFiles.length > 0 ||
this.customRoutes.rewrites.fallback.length > 0
if (tsconfigChange) {
config.resolve?.plugins?.forEach((plugin: any) => {
// look for the JsConfigPathsPlugin and update with
// the latest paths/baseUrl config
if (plugin && plugin.jsConfigPlugin && tsconfigResult) {
const { resolvedBaseUrl, jsConfig } = tsconfigResult
const currentResolvedBaseUrl = plugin.resolvedBaseUrl
const resolvedUrlIndex = config.resolve?.modules?.findIndex(
(item) => item === currentResolvedBaseUrl
)
if (
resolvedBaseUrl &&
resolvedBaseUrl !== currentResolvedBaseUrl
) {
// remove old baseUrl and add new one
if (resolvedUrlIndex && resolvedUrlIndex > -1) {
config.resolve?.modules?.splice(resolvedUrlIndex, 1)
}
config.resolve?.modules?.push(resolvedBaseUrl)
}
if (jsConfig?.compilerOptions?.paths && resolvedBaseUrl) {
Object.keys(plugin.paths).forEach((key) => {
delete plugin.paths[key]
})
Object.assign(plugin.paths, jsConfig.compilerOptions.paths)
plugin.resolvedBaseUrl = resolvedBaseUrl
}
}
})
}
if (envChange) {
config.plugins?.forEach((plugin: any) => {
// we look for the DefinePlugin definitions so we can
// update them on the active compilers
if (
plugin &&
typeof plugin.definitions === 'object' &&
plugin.definitions.__NEXT_DEFINE_ENV
) {
const newDefine = getDefineEnv({
dev: true,
config: this.nextConfig,
distDir: this.distDir,
isClient,
hasRewrites,
hasReactRoot: this.hotReloader?.hasReactRoot,
isNodeServer,
isEdgeServer,
})
Object.keys(plugin.definitions).forEach((key) => {
if (!(key in newDefine)) {
delete plugin.definitions[key]
}
})
Object.assign(plugin.definitions, newDefine)
}
})
}
})
this.hotReloader?.invalidate()
}
if (nestedMiddleware.length > 0) {
Log.error(
new NestedMiddlewareError(
nestedMiddleware,
this.dir,
this.pagesDir!
).message
)
nestedMiddleware = []
}
// Make sure to sort parallel routes to make the result deterministic.
this.appPathRoutes = Object.fromEntries(
Object.entries(appPaths).map(([k, v]) => [k, v.sort()])
)
const edgeRoutes = Array.from(edgeRoutesSet)
this.edgeFunctions = getSortedRoutes(edgeRoutes).map((page) => {
const matchedAppPaths = this.getOriginalAppPaths(page)
if (Array.isArray(matchedAppPaths)) {
page = matchedAppPaths[0]
}
const edgeRegex = getRouteRegex(page)
return {
match: getRouteMatcher(edgeRegex),
page,
re: edgeRegex.re,
}
})
this.middleware = middlewareMatchers
? {
match: getMiddlewareRouteMatcher(middlewareMatchers),
page: '/',
matchers: middlewareMatchers,
}
: undefined
try {
// we serve a separate manifest with all pages for the client in
// dev mode so that we can match a page after a rewrite on the client
// before it has been built and is populated in the _buildManifest
const sortedRoutes = getSortedRoutes(routedPages)
if (
!this.sortedRoutes?.every((val, idx) => val === sortedRoutes[idx])
) {
// emit the change so clients fetch the update
this.hotReloader!.send(undefined, { devPagesManifest: true })
}
this.sortedRoutes = sortedRoutes
this.dynamicRoutes = this.sortedRoutes
.filter(isDynamicRoute)
.map((page) => ({
page,
match: getRouteMatcher(getRouteRegex(page)),
}))
this.router.setDynamicRoutes(this.dynamicRoutes)
this.router.setCatchallMiddleware(
this.generateCatchAllMiddlewareRoute(true)
)
if (!resolved) {
resolve()
resolved = true
}
} catch (e) {
if (!resolved) {
reject(e)
resolved = true
} else {
console.warn('Failed to reload dynamic routes:', e)
}
}
})
})
}
async stopWatcher(): Promise<void> {
if (!this.webpackWatcher) {
return
}
this.webpackWatcher.close()
this.webpackWatcher = null
}
private async verifyTypeScript() {
if (this.verifyingTypeScript) {
return
}
try {
this.verifyingTypeScript = true
const verifyResult = await verifyTypeScriptSetup({
dir: this.dir,
intentDirs: [this.pagesDir, this.appDir].filter(Boolean) as string[],
typeCheckPreflight: false,
tsconfigPath: this.nextConfig.typescript.tsconfigPath,
disableStaticImages: this.nextConfig.images.disableStaticImages,
})
if (verifyResult.version) {
this.usingTypeScript = true
}
} finally {
this.verifyingTypeScript = false
}
}
async prepare(): Promise<void> {
setGlobal('distDir', this.distDir)
setGlobal('phase', PHASE_DEVELOPMENT_SERVER)
await this.verifyTypeScript()
this.customRoutes = await loadCustomRoutes(this.nextConfig)
// reload router
const { redirects, rewrites, headers } = this.customRoutes
if (
rewrites.beforeFiles.length ||
rewrites.afterFiles.length ||
rewrites.fallback.length ||
redirects.length ||
headers.length
) {
this.router = new Router(this.generateRoutes())
}
this.hotReloader = new HotReloader(this.dir, {
pagesDir: this.pagesDir,
distDir: this.distDir,
config: this.nextConfig,
previewProps: this.getPreviewProps(),
buildId: this.buildId,
rewrites,
appDir: this.appDir,
})
await super.prepare()
await this.addExportPathMapRoutes()
await this.hotReloader.start(true)
await this.startWatcher()
this.setDevReady!()
if (this.nextConfig.experimental.nextScriptWorkers) {
await verifyPartytownSetup(
this.dir,
pathJoin(this.distDir, CLIENT_STATIC_FILES_PATH)
)
}
const telemetry = new Telemetry({ distDir: this.distDir })
telemetry.record(
eventCliSession(this.distDir, this.nextConfig, {
webpackVersion: 5,
cliCommand: 'dev',
isSrcDir:
(!!this.pagesDir &&
relative(this.dir, this.pagesDir).startsWith('src')) ||
(!!this.appDir && relative(this.dir, this.appDir).startsWith('src')),
hasNowJson: !!(await findUp('now.json', { cwd: this.dir })),
isCustomServer: this.isCustomServer,
})
)
// This is required by the tracing subsystem.
setGlobal('telemetry', telemetry)
process.on('unhandledRejection', (reason) => {
this.logErrorWithOriginalStack(reason, 'unhandledRejection').catch(
() => {}
)
})
process.on('uncaughtException', (err) => {
this.logErrorWithOriginalStack(err, 'uncaughtException').catch(() => {})
})
}
protected async close(): Promise<void> {
await this.stopWatcher()
await this.getStaticPathsWorker().end()
if (this.hotReloader) {
await this.hotReloader.stop()
}
}
protected async hasPage(pathname: string): Promise<boolean> {
let normalizedPath: string
try {
normalizedPath = normalizePagePath(pathname)
} catch (err) {
console.error(err)
// if normalizing the page fails it means it isn't valid
// so it doesn't exist so don't throw and return false
// to ensure we return 404 instead of 500
return false
}
if (isMiddlewareFile(normalizedPath)) {
return findPageFile(
this.dir,
normalizedPath,
this.nextConfig.pageExtensions,
false
).then(Boolean)
}
// check appDir first if enabled
if (this.appDir) {
const pageFile = await findPageFile(
this.appDir,
normalizedPath,
this.nextConfig.pageExtensions,
true
)
if (pageFile) return true
}
if (this.pagesDir) {
const pageFile = await findPageFile(
this.pagesDir,
normalizedPath,
this.nextConfig.pageExtensions,
false
)
return !!pageFile
}
return false
}
protected async _beforeCatchAllRender(
req: BaseNextRequest,
res: BaseNextResponse,
params: Params,
parsedUrl: UrlWithParsedQuery
): Promise<boolean> {
const { pathname } = parsedUrl
const pathParts = params.path || []
const path = `/${pathParts.join('/')}`
// check for a public file, throwing error if there's a
// conflicting page
let decodedPath: string
try {
decodedPath = decodeURIComponent(path)
} catch (_) {
throw new DecodeError('failed to decode param')
}
if (await this.hasPublicFile(decodedPath)) {
if (await this.hasPage(pathname!)) {
const err = new Error(
`A conflicting public file and page file was found for path ${pathname} https://nextjs.org/docs/messages/conflicting-public-file-page`
)
res.statusCode = 500
await this.renderError(err, req, res, pathname!, {})
return true
}
await this.servePublic(req, res, pathParts)
return true
}
return false
}
private setupWebSocketHandler(server?: HTTPServer, _req?: NodeNextRequest) {
if (!this.addedUpgradeListener) {
this.addedUpgradeListener = true
server = server || (_req?.originalRequest.socket as any)?.server
if (!server) {
// this is very unlikely to happen but show an error in case
// it does somehow
Log.error(
`Invalid IncomingMessage received, make sure http.createServer is being used to handle requests.`
)
} else {
const { basePath } = this.nextConfig
server.on('upgrade', (req, socket, head) => {
let assetPrefix = (this.nextConfig.assetPrefix || '').replace(
/^\/+/,
''
)
// assetPrefix can be a proxy server with a url locally
// if so, it's needed to send these HMR requests with a rewritten url directly to /_next/webpack-hmr
// otherwise account for a path-like prefix when listening to socket events
if (assetPrefix.startsWith('http')) {
assetPrefix = ''
} else if (assetPrefix) {
assetPrefix = `/${assetPrefix}`
}
if (
req.url?.startsWith(
`${basePath || assetPrefix || ''}/_next/webpack-hmr`
)
) {
this.hotReloader?.onHMR(req, socket, head)
} else {
this.handleUpgrade(req, socket, head)
}
})
}
}
}
async runMiddleware(params: {
request: BaseNextRequest
response: BaseNextResponse
parsedUrl: ParsedUrl
parsed: UrlWithParsedQuery
middlewareList: MiddlewareRoutingItem[]
}) {
try {
const result = await super.runMiddleware({
...params,
onWarning: (warn) => {
this.logErrorWithOriginalStack(warn, 'warning')
},
})
if ('finished' in result) {
return result
}
result.waitUntil.catch((error) => {
this.logErrorWithOriginalStack(error, 'unhandledRejection')
})
return result
} catch (error) {
if (error instanceof DecodeError) {
throw error
}
/**
* We only log the error when it is not a MiddlewareNotFound error as
* in that case we should be already displaying a compilation error
* which is what makes the module not found.
*/
if (!(error instanceof MiddlewareNotFoundError)) {
this.logErrorWithOriginalStack(error)
}
const err = getProperError(error)
;(err as any).middleware = true
const { request, response, parsedUrl } = params
/**
* When there is a failure for an internal Next.js request from
* middleware we bypass the error without finishing the request
* so we can serve the required chunks to render the error.
*/
if (
request.url.includes('/_next/static') ||
request.url.includes('/__nextjs_original-stack-frame')
) {
return { finished: false }
}
response.statusCode = 500
this.renderError(err, request, response, parsedUrl.pathname)
return { finished: true }
}
}
async runEdgeFunction(params: {
req: BaseNextRequest
res: BaseNextResponse
query: ParsedUrlQuery
params: Params | undefined
page: string
appPaths: string[] | null
isAppPath: boolean
}) {
try {
return super.runEdgeFunction({
...params,
onWarning: (warn) => {
this.logErrorWithOriginalStack(warn, 'warning')
},
})
} catch (error) {
if (error instanceof DecodeError) {
throw error
}
this.logErrorWithOriginalStack(error, 'warning')
const err = getProperError(error)
const { req, res, page } = params
res.statusCode = 500
this.renderError(err, req, res, page)
return null
}
}
async run(
req: NodeNextRequest,
res: NodeNextResponse,
parsedUrl: UrlWithParsedQuery
): Promise<void> {
await this.devReady
this.setupWebSocketHandler(undefined, req)
const { basePath } = this.nextConfig
let originalPathname: string | null = null
if (basePath && pathHasPrefix(parsedUrl.pathname || '/', basePath)) {
// strip basePath before handling dev bundles
// If replace ends up replacing the full url it'll be `undefined`, meaning we have to default it to `/`
originalPathname = parsedUrl.pathname
parsedUrl.pathname = removePathPrefix(parsedUrl.pathname || '/', basePath)
}
const { pathname } = parsedUrl
if (pathname!.startsWith('/_next')) {
if (await fileExists(pathJoin(this.publicDir, '_next'))) {
throw new Error(PUBLIC_DIR_MIDDLEWARE_CONFLICT)
}
}
const { finished = false } = await this.hotReloader!.run(
req.originalRequest,
res.originalResponse,
parsedUrl
)
if (finished) {
return
}
if (originalPathname) {
// restore the path before continuing so that custom-routes can accurately determine
// if they should match against the basePath or not
parsedUrl.pathname = originalPathname
}
try {
return await super.run(req, res, parsedUrl)
} catch (error) {
res.statusCode = 500
const err = getProperError(error)
try {
this.logErrorWithOriginalStack(err).catch(() => {})
return await this.renderError(err, req, res, pathname!, {
__NEXT_PAGE: (isError(err) && err.page) || pathname || '',
})
} catch (internalErr) {
console.error(internalErr)
res.body('Internal Server Error').send()
}
}
}
private async logErrorWithOriginalStack(
err?: unknown,
type?: 'unhandledRejection' | 'uncaughtException' | 'warning'