796 lines
24 KiB
TypeScript
796 lines
24 KiB
TypeScript
import crypto from 'crypto'
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import fs from 'fs'
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import chalk from 'chalk'
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import { IncomingMessage, ServerResponse } from 'http'
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import { Worker } from 'jest-worker'
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import AmpHtmlValidator from 'next/dist/compiled/amphtml-validator'
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import findUp from 'next/dist/compiled/find-up'
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import { join as pathJoin, relative, resolve as pathResolve, sep } from 'path'
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import React from 'react'
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import { UrlWithParsedQuery } from 'url'
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import Watchpack from 'watchpack'
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import { ampValidation } from '../../build/output'
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import { PUBLIC_DIR_MIDDLEWARE_CONFLICT } from '../../lib/constants'
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import { fileExists } from '../../lib/file-exists'
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import { findPagesDir } from '../../lib/find-pages-dir'
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import loadCustomRoutes, { CustomRoutes } from '../../lib/load-custom-routes'
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import { verifyTypeScriptSetup } from '../../lib/verifyTypeScriptSetup'
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import {
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PHASE_DEVELOPMENT_SERVER,
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CLIENT_STATIC_FILES_PATH,
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DEV_CLIENT_PAGES_MANIFEST,
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} from '../../shared/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 '../../shared/lib/router/utils'
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import { __ApiPreviewProps } from '../api-utils'
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import Server, {
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WrappedBuildError,
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ServerConstructor,
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FindComponentsResult,
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} from '../next-server'
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import { normalizePagePath } from '../normalize-page-path'
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import Router, { Params, route } from '../router'
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import { eventCliSession } from '../../telemetry/events'
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import { Telemetry } from '../../telemetry/storage'
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import { setGlobal } from '../../telemetry/trace'
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import HotReloader from './hot-reloader'
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import { findPageFile } from '../lib/find-page-file'
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import { getNodeOptionsWithoutInspect } from '../lib/utils'
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import { withCoalescedInvoke } from '../../lib/coalesced-function'
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import { NextConfig } from '../config'
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import { ParsedUrlQuery } from 'querystring'
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import {
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LoadComponentsReturnType,
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loadDefaultErrorComponents,
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} from '../load-components'
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import { DecodeError } from '../../shared/lib/utils'
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import { parseStack } from '@next/react-dev-overlay/lib/internal/helpers/parseStack'
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import {
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createOriginalStackFrame,
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getSourceById,
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} from '@next/react-dev-overlay/lib/middleware'
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import * as Log from '../../build/output/log'
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// Load ReactDevOverlay only when needed
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let ReactDevOverlayImpl: React.FunctionComponent
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const ReactDevOverlay = (props: any) => {
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if (ReactDevOverlayImpl === undefined) {
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ReactDevOverlayImpl =
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require('@next/react-dev-overlay/lib/client').ReactDevOverlay
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}
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return ReactDevOverlayImpl(props)
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}
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export default class DevServer extends Server {
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private devReady: Promise<void>
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private setDevReady?: Function
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private webpackWatcher?: Watchpack | null
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private hotReloader?: HotReloader
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private isCustomServer: boolean
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protected sortedRoutes?: string[]
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protected staticPathsWorker: import('jest-worker').Worker & {
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loadStaticPaths: typeof import('./static-paths-worker').loadStaticPaths
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}
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constructor(
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options: ServerConstructor & {
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conf: NextConfig
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isNextDevCommand?: boolean
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}
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) {
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super({ ...options, dev: true })
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this.renderOpts.dev = true
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;(this.renderOpts as any).ErrorDebug = ReactDevOverlay
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this.devReady = new Promise((resolve) => {
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this.setDevReady = resolve
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})
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;(this.renderOpts as any).ampSkipValidation =
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this.nextConfig.experimental?.amp?.skipValidation ?? false
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;(this.renderOpts as any).ampValidator = (
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html: string,
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pathname: string
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) => {
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const validatorPath =
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this.nextConfig.experimental &&
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this.nextConfig.experimental.amp &&
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this.nextConfig.experimental.amp.validator
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return AmpHtmlValidator.getInstance(validatorPath).then((validator) => {
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const result = validator.validateString(html)
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ampValidation(
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pathname,
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result.errors
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.filter((e) => e.severity === 'ERROR')
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.filter((e) => this._filterAmpDevelopmentScript(html, e)),
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result.errors.filter((e) => e.severity !== 'ERROR')
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)
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})
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}
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if (fs.existsSync(pathJoin(this.dir, 'static'))) {
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console.warn(
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`The static directory has been deprecated in favor of the public directory. https://nextjs.org/docs/messages/static-dir-deprecated`
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)
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}
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this.isCustomServer = !options.isNextDevCommand
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this.pagesDir = findPagesDir(this.dir)
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this.staticPathsWorker = new Worker(
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require.resolve('./static-paths-worker'),
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{
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maxRetries: 1,
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numWorkers: this.nextConfig.experimental.cpus,
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enableWorkerThreads: this.nextConfig.experimental.workerThreads,
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forkOptions: {
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env: {
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...process.env,
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// discard --inspect/--inspect-brk flags from process.env.NODE_OPTIONS. Otherwise multiple Node.js debuggers
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// would be started if user launch Next.js in debugging mode. The number of debuggers is linked to
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// the number of workers Next.js tries to launch. The only worker users are interested in debugging
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// is the main Next.js one
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NODE_OPTIONS: getNodeOptionsWithoutInspect(),
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},
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},
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}
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) as Worker & {
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loadStaticPaths: typeof import('./static-paths-worker').loadStaticPaths
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}
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this.staticPathsWorker.getStdout().pipe(process.stdout)
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this.staticPathsWorker.getStderr().pipe(process.stderr)
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}
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protected readBuildId(): string {
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return 'development'
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}
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async addExportPathMapRoutes() {
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// Makes `next export` exportPathMap work in development mode.
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// So that the user doesn't have to define a custom server reading the exportPathMap
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if (this.nextConfig.exportPathMap) {
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console.log('Defining routes from exportPathMap')
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const exportPathMap = await this.nextConfig.exportPathMap(
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{},
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{
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dev: true,
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dir: this.dir,
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outDir: null,
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distDir: this.distDir,
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buildId: this.buildId,
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}
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) // In development we can't give a default path mapping
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for (const path in exportPathMap) {
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const { page, query = {} } = exportPathMap[path]
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// We use unshift so that we're sure the routes is defined before Next's default routes
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this.router.addFsRoute({
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match: route(path),
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type: 'route',
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name: `${path} exportpathmap route`,
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fn: async (req, res, _params, parsedUrl) => {
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const { query: urlQuery } = parsedUrl
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Object.keys(urlQuery)
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.filter((key) => query[key] === undefined)
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.forEach((key) =>
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console.warn(
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`Url '${path}' defines a query parameter '${key}' that is missing in exportPathMap`
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)
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)
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const mergedQuery = { ...urlQuery, ...query }
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await this.render(req, res, page, mergedQuery, parsedUrl)
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return {
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finished: true,
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}
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},
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})
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}
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}
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}
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async startWatcher(): Promise<void> {
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if (this.webpackWatcher) {
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return
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}
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const regexPageExtension = new RegExp(
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`\\.+(?:${this.nextConfig.pageExtensions.join('|')})$`
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)
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let resolved = false
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return new Promise((resolve, reject) => {
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const pagesDir = this.pagesDir
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// Watchpack doesn't emit an event for an empty directory
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fs.readdir(pagesDir!, (_, files) => {
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if (files?.length) {
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return
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}
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if (!resolved) {
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resolve()
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resolved = true
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}
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})
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let wp = (this.webpackWatcher = new Watchpack())
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wp.watch([], [pagesDir!], 0)
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wp.on('aggregated', () => {
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const routedPages = []
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const knownFiles = wp.getTimeInfoEntries()
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for (const [fileName, { accuracy }] of knownFiles) {
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if (accuracy === undefined || !regexPageExtension.test(fileName)) {
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continue
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}
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let pageName =
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'/' + relative(pagesDir!, fileName).replace(/\\+/g, '/')
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pageName = pageName.replace(regexPageExtension, '')
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pageName = pageName.replace(/\/index$/, '') || '/'
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routedPages.push(pageName)
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}
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try {
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// we serve a separate manifest with all pages for the client in
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// dev mode so that we can match a page after a rewrite on the client
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// before it has been built and is populated in the _buildManifest
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const sortedRoutes = getSortedRoutes(routedPages)
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if (
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!this.sortedRoutes?.every((val, idx) => val === sortedRoutes[idx])
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) {
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// emit the change so clients fetch the update
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this.hotReloader!.send(undefined, { devPagesManifest: true })
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}
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this.sortedRoutes = sortedRoutes
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this.dynamicRoutes = this.sortedRoutes
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.filter(isDynamicRoute)
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.map((page) => ({
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page,
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match: getRouteMatcher(getRouteRegex(page)),
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}))
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this.router.setDynamicRoutes(this.dynamicRoutes)
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if (!resolved) {
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resolve()
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resolved = true
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}
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} catch (e) {
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if (!resolved) {
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reject(e)
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resolved = true
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} else {
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console.warn('Failed to reload dynamic routes:', e)
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}
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}
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})
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})
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}
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async stopWatcher(): Promise<void> {
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if (!this.webpackWatcher) {
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return
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}
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this.webpackWatcher.close()
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this.webpackWatcher = null
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}
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async prepare(): Promise<void> {
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await verifyTypeScriptSetup(
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this.dir,
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this.pagesDir!,
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false,
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!this.nextConfig.images.disableStaticImages
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)
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this.customRoutes = await loadCustomRoutes(this.nextConfig)
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// reload router
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const { redirects, rewrites, headers } = this.customRoutes
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if (
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rewrites.beforeFiles.length ||
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rewrites.afterFiles.length ||
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rewrites.fallback.length ||
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redirects.length ||
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headers.length
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) {
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this.router = new Router(this.generateRoutes())
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}
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this.hotReloader = new HotReloader(this.dir, {
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pagesDir: this.pagesDir!,
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config: this.nextConfig,
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previewProps: this.getPreviewProps(),
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buildId: this.buildId,
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rewrites,
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})
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await super.prepare()
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await this.addExportPathMapRoutes()
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await this.hotReloader.start()
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await this.startWatcher()
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this.setDevReady!()
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const telemetry = new Telemetry({ distDir: this.distDir })
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telemetry.record(
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eventCliSession(PHASE_DEVELOPMENT_SERVER, this.distDir, {
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webpackVersion: this.hotReloader.isWebpack5 ? 5 : 4,
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cliCommand: 'dev',
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isSrcDir: relative(this.dir, this.pagesDir!).startsWith('src'),
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hasNowJson: !!(await findUp('now.json', { cwd: this.dir })),
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isCustomServer: this.isCustomServer,
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})
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)
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// This is required by the tracing subsystem.
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setGlobal('telemetry', telemetry)
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process.on('unhandledRejection', (reason) => {
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this.logErrorWithOriginalStack(reason, 'unhandledRejection').catch(
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() => {}
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)
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})
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process.on('uncaughtException', (err) => {
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this.logErrorWithOriginalStack(err, 'uncaughtException').catch(() => {})
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})
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}
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protected async close(): Promise<void> {
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await this.stopWatcher()
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await this.staticPathsWorker.end()
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if (this.hotReloader) {
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await this.hotReloader.stop()
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}
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}
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protected async hasPage(pathname: string): Promise<boolean> {
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let normalizedPath: string
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try {
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normalizedPath = normalizePagePath(pathname)
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} catch (err) {
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console.error(err)
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// if normalizing the page fails it means it isn't valid
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// so it doesn't exist so don't throw and return false
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// to ensure we return 404 instead of 500
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return false
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}
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const pageFile = await findPageFile(
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this.pagesDir!,
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normalizedPath,
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this.nextConfig.pageExtensions
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)
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return !!pageFile
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}
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protected async _beforeCatchAllRender(
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req: IncomingMessage,
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res: ServerResponse,
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params: Params,
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parsedUrl: UrlWithParsedQuery
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): Promise<boolean> {
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const { pathname } = parsedUrl
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const pathParts = params.path || []
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const path = `/${pathParts.join('/')}`
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// check for a public file, throwing error if there's a
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// conflicting page
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let decodedPath: string
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try {
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decodedPath = decodeURIComponent(path)
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} catch (_) {
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throw new DecodeError('failed to decode param')
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}
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if (await this.hasPublicFile(decodedPath)) {
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if (await this.hasPage(pathname!)) {
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const err = new Error(
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`A conflicting public file and page file was found for path ${pathname} https://nextjs.org/docs/messages/conflicting-public-file-page`
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)
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res.statusCode = 500
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await this.renderError(err, req, res, pathname!, {})
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return true
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}
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await this.servePublic(req, res, pathParts)
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return true
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}
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return false
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}
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async run(
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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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await this.devReady
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const { basePath } = this.nextConfig
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let originalPathname: string | null = null
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if (basePath && parsedUrl.pathname?.startsWith(basePath)) {
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// strip basePath before handling dev bundles
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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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originalPathname = parsedUrl.pathname
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parsedUrl.pathname = parsedUrl.pathname!.slice(basePath.length) || '/'
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}
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const { pathname } = parsedUrl
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if (pathname!.startsWith('/_next')) {
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if (await fileExists(pathJoin(this.publicDir, '_next'))) {
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throw new Error(PUBLIC_DIR_MIDDLEWARE_CONFLICT)
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}
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}
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const { finished = false } = await this.hotReloader!.run(
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req,
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res,
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parsedUrl
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)
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if (finished) {
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return
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}
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if (originalPathname) {
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// restore the path before continuing so that custom-routes can accurately determine
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// if they should match against the basePath or not
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parsedUrl.pathname = originalPathname
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}
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try {
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return await super.run(req, res, parsedUrl)
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} catch (err) {
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res.statusCode = 500
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try {
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this.logErrorWithOriginalStack(err).catch(() => {})
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return await this.renderError(err, req, res, pathname!, {
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__NEXT_PAGE: err?.page || pathname,
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})
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} catch (internalErr) {
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console.error(internalErr)
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res.end('Internal Server Error')
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}
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}
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}
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private async logErrorWithOriginalStack(
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possibleError?: any,
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type?: 'unhandledRejection' | 'uncaughtException'
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) {
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let usedOriginalStack = false
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if (possibleError?.name && possibleError?.stack && possibleError?.message) {
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const err: Error & { stack: string } = possibleError
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try {
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const frames = parseStack(err.stack)
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const frame = frames[0]
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if (frame.lineNumber && frame?.file) {
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const compilation = this.hotReloader?.serverStats?.compilation
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const moduleId = frame.file!.replace(
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/^(webpack-internal:\/\/\/|file:\/\/)/,
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''
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)
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const source = await getSourceById(
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!!frame.file?.startsWith(sep) || !!frame.file?.startsWith('file:'),
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moduleId,
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compilation,
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this.hotReloader!.isWebpack5
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)
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const originalFrame = await createOriginalStackFrame({
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line: frame.lineNumber!,
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column: frame.column,
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source,
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frame,
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modulePath: moduleId,
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rootDirectory: this.dir,
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})
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if (originalFrame) {
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const { originalCodeFrame, originalStackFrame } = originalFrame
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const { file, lineNumber, column, methodName } = originalStackFrame
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console.error(
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chalk.red('error') +
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' - ' +
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`${file} (${lineNumber}:${column}) @ ${methodName}`
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)
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console.error(`${chalk.red(err.name)}: ${err.message}`)
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console.error(originalCodeFrame)
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usedOriginalStack = true
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}
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}
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} catch (_) {
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// failed to load original stack using source maps
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// this un-actionable by users so we don't show the
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// internal error and only show the provided stack
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}
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}
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if (!usedOriginalStack) {
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if (type) {
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Log.error(`${type}:`, possibleError)
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} else {
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Log.error(possibleError)
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}
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}
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}
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|
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// override production loading of routes-manifest
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protected getCustomRoutes(): CustomRoutes {
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|
// actual routes will be loaded asynchronously during .prepare()
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return {
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redirects: [],
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rewrites: { beforeFiles: [], afterFiles: [], fallback: [] },
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headers: [],
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}
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}
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private _devCachedPreviewProps: __ApiPreviewProps | undefined
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|
protected getPreviewProps() {
|
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if (this._devCachedPreviewProps) {
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return this._devCachedPreviewProps
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|
}
|
|
return (this._devCachedPreviewProps = {
|
|
previewModeId: crypto.randomBytes(16).toString('hex'),
|
|
previewModeSigningKey: crypto.randomBytes(32).toString('hex'),
|
|
previewModeEncryptionKey: crypto.randomBytes(32).toString('hex'),
|
|
})
|
|
}
|
|
|
|
generateRoutes() {
|
|
const { fsRoutes, ...otherRoutes } = super.generateRoutes()
|
|
|
|
// In development we expose all compiled files for react-error-overlay's line show feature
|
|
// We use unshift so that we're sure the routes is defined before Next's default routes
|
|
fsRoutes.unshift({
|
|
match: route('/_next/development/:path*'),
|
|
type: 'route',
|
|
name: '_next/development catchall',
|
|
fn: async (req, res, params) => {
|
|
const p = pathJoin(this.distDir, ...(params.path || []))
|
|
await this.serveStatic(req, res, p)
|
|
return {
|
|
finished: true,
|
|
}
|
|
},
|
|
})
|
|
|
|
fsRoutes.unshift({
|
|
match: route(
|
|
`/_next/${CLIENT_STATIC_FILES_PATH}/${this.buildId}/${DEV_CLIENT_PAGES_MANIFEST}`
|
|
),
|
|
type: 'route',
|
|
name: `_next/${CLIENT_STATIC_FILES_PATH}/${this.buildId}/${DEV_CLIENT_PAGES_MANIFEST}`,
|
|
fn: async (_req, res) => {
|
|
res.statusCode = 200
|
|
res.setHeader('Content-Type', 'application/json; charset=utf-8')
|
|
res.end(
|
|
JSON.stringify({
|
|
pages: this.sortedRoutes,
|
|
})
|
|
)
|
|
return {
|
|
finished: true,
|
|
}
|
|
},
|
|
})
|
|
|
|
fsRoutes.push({
|
|
match: route('/:path*'),
|
|
type: 'route',
|
|
requireBasePath: false,
|
|
name: 'catchall public directory route',
|
|
fn: async (req, res, params, parsedUrl) => {
|
|
const { pathname } = parsedUrl
|
|
if (!pathname) {
|
|
throw new Error('pathname is undefined')
|
|
}
|
|
|
|
// Used in development to check public directory paths
|
|
if (await this._beforeCatchAllRender(req, res, params, parsedUrl)) {
|
|
return {
|
|
finished: true,
|
|
}
|
|
}
|
|
|
|
return {
|
|
finished: false,
|
|
}
|
|
},
|
|
})
|
|
|
|
return { fsRoutes, ...otherRoutes }
|
|
}
|
|
|
|
// In development public files are not added to the router but handled as a fallback instead
|
|
protected generatePublicRoutes(): never[] {
|
|
return []
|
|
}
|
|
|
|
// In development dynamic routes cannot be known ahead of time
|
|
protected getDynamicRoutes(): never[] {
|
|
return []
|
|
}
|
|
|
|
_filterAmpDevelopmentScript(
|
|
html: string,
|
|
event: { line: number; col: number; code: string }
|
|
): boolean {
|
|
if (event.code !== 'DISALLOWED_SCRIPT_TAG') {
|
|
return true
|
|
}
|
|
|
|
const snippetChunks = html.split('\n')
|
|
|
|
let snippet
|
|
if (
|
|
!(snippet = html.split('\n')[event.line - 1]) ||
|
|
!(snippet = snippet.substring(event.col))
|
|
) {
|
|
return true
|
|
}
|
|
|
|
snippet = snippet + snippetChunks.slice(event.line).join('\n')
|
|
snippet = snippet.substring(0, snippet.indexOf('</script>'))
|
|
|
|
return !snippet.includes('data-amp-development-mode-only')
|
|
}
|
|
|
|
protected async getStaticPaths(pathname: string): Promise<{
|
|
staticPaths: string[] | undefined
|
|
fallbackMode: false | 'static' | 'blocking'
|
|
}> {
|
|
// we lazy load the staticPaths to prevent the user
|
|
// from waiting on them for the page to load in dev mode
|
|
|
|
const __getStaticPaths = async () => {
|
|
const { publicRuntimeConfig, serverRuntimeConfig, httpAgentOptions } =
|
|
this.nextConfig
|
|
const { locales, defaultLocale } = this.nextConfig.i18n || {}
|
|
|
|
const paths = await this.staticPathsWorker.loadStaticPaths(
|
|
this.distDir,
|
|
pathname,
|
|
!this.renderOpts.dev && this._isLikeServerless,
|
|
{
|
|
publicRuntimeConfig,
|
|
serverRuntimeConfig,
|
|
},
|
|
httpAgentOptions,
|
|
locales,
|
|
defaultLocale
|
|
)
|
|
return paths
|
|
}
|
|
const { paths: staticPaths, fallback } = (
|
|
await withCoalescedInvoke(__getStaticPaths)(`staticPaths-${pathname}`, [])
|
|
).value
|
|
|
|
return {
|
|
staticPaths,
|
|
fallbackMode:
|
|
fallback === 'blocking'
|
|
? 'blocking'
|
|
: fallback === true
|
|
? 'static'
|
|
: false,
|
|
}
|
|
}
|
|
|
|
protected async ensureApiPage(pathname: string) {
|
|
return this.hotReloader!.ensurePage(pathname)
|
|
}
|
|
|
|
protected async findPageComponents(
|
|
pathname: string,
|
|
query: ParsedUrlQuery = {},
|
|
params: Params | null = null
|
|
): Promise<FindComponentsResult | null> {
|
|
await this.devReady
|
|
const compilationErr = await this.getCompilationError(pathname)
|
|
if (compilationErr) {
|
|
// Wrap build errors so that they don't get logged again
|
|
throw new WrappedBuildError(compilationErr)
|
|
}
|
|
try {
|
|
await this.hotReloader!.ensurePage(pathname)
|
|
return super.findPageComponents(pathname, query, params)
|
|
} catch (err) {
|
|
if ((err as any).code !== 'ENOENT') {
|
|
throw err
|
|
}
|
|
return null
|
|
}
|
|
}
|
|
|
|
protected async getFallbackErrorComponents(): Promise<LoadComponentsReturnType | null> {
|
|
await this.hotReloader!.buildFallbackError()
|
|
// Build the error page to ensure the fallback is built too.
|
|
// TODO: See if this can be moved into hotReloader or removed.
|
|
await this.hotReloader!.ensurePage('/_error')
|
|
return await loadDefaultErrorComponents(this.distDir)
|
|
}
|
|
|
|
protected setImmutableAssetCacheControl(res: ServerResponse): void {
|
|
res.setHeader('Cache-Control', 'no-store, must-revalidate')
|
|
}
|
|
|
|
private servePublic(
|
|
req: IncomingMessage,
|
|
res: ServerResponse,
|
|
pathParts: string[]
|
|
): Promise<void> {
|
|
const p = pathJoin(this.publicDir, ...pathParts)
|
|
return this.serveStatic(req, res, p)
|
|
}
|
|
|
|
async hasPublicFile(path: string): Promise<boolean> {
|
|
try {
|
|
const info = await fs.promises.stat(pathJoin(this.publicDir, path))
|
|
return info.isFile()
|
|
} catch (_) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
async getCompilationError(page: string): Promise<any> {
|
|
const errors = await this.hotReloader!.getCompilationErrors(page)
|
|
if (errors.length === 0) return
|
|
|
|
// Return the very first error we found.
|
|
return errors[0]
|
|
}
|
|
|
|
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 = pathResolve(decodedUntrustedFilePath)
|
|
|
|
// don't allow null bytes anywhere in the file path
|
|
if (untrustedFilePath.indexOf('\0') !== -1) {
|
|
return false
|
|
}
|
|
|
|
// During development mode, files can be added while the server is running.
|
|
// Checks for .next/static, .next/server, static and public.
|
|
// Note that in development .next/server is available for error reporting purposes.
|
|
// see `packages/next/server/next-server.ts` for more details.
|
|
if (
|
|
untrustedFilePath.startsWith(pathJoin(this.distDir, 'static') + sep) ||
|
|
untrustedFilePath.startsWith(pathJoin(this.distDir, 'server') + sep) ||
|
|
untrustedFilePath.startsWith(pathJoin(this.dir, 'static') + sep) ||
|
|
untrustedFilePath.startsWith(pathJoin(this.dir, 'public') + sep)
|
|
) {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
}
|