forked from vercel/next.js
/
index.ts
1232 lines (1096 loc) · 37.2 KB
/
index.ts
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import crypto from 'crypto'
import { promises, writeFileSync } from 'fs'
import Worker from 'jest-worker'
import chalk from 'next/dist/compiled/chalk'
import devalue from 'next/dist/compiled/devalue'
import escapeStringRegexp from 'next/dist/compiled/escape-string-regexp'
import findUp from 'next/dist/compiled/find-up'
import nanoid from 'next/dist/compiled/nanoid/index.js'
import { pathToRegexp } from 'next/dist/compiled/path-to-regexp'
import path from 'path'
import formatWebpackMessages from '../client/dev/error-overlay/format-webpack-messages'
import {
PAGES_404_GET_INITIAL_PROPS_ERROR,
PUBLIC_DIR_MIDDLEWARE_CONFLICT,
} from '../lib/constants'
import { fileExists } from '../lib/file-exists'
import { findPagesDir } from '../lib/find-pages-dir'
import loadCustomRoutes, {
getRedirectStatus,
normalizeRouteRegex,
Redirect,
RouteType,
} from '../lib/load-custom-routes'
import { loadEnvConfig } from '@next/env'
import { recursiveDelete } from '../lib/recursive-delete'
import { verifyTypeScriptSetup } from '../lib/verifyTypeScriptSetup'
import {
BUILD_MANIFEST,
CLIENT_STATIC_FILES_PATH,
EXPORT_DETAIL,
EXPORT_MARKER,
PAGES_MANIFEST,
PHASE_PRODUCTION_BUILD,
PRERENDER_MANIFEST,
ROUTES_MANIFEST,
SERVERLESS_DIRECTORY,
SERVER_DIRECTORY,
} from '../next-server/lib/constants'
import {
getRouteRegex,
getSortedRoutes,
isDynamicRoute,
} from '../next-server/lib/router/utils'
import { __ApiPreviewProps } from '../next-server/server/api-utils'
import loadConfig, {
isTargetLikeServerless,
} from '../next-server/server/config'
import { BuildManifest } from '../next-server/server/get-page-files'
import '../next-server/server/node-polyfill-fetch'
import { normalizePagePath } from '../next-server/server/normalize-page-path'
import { getPagePath } from '../next-server/server/require'
import * as ciEnvironment from '../telemetry/ci-info'
import {
eventBuildCompleted,
eventBuildOptimize,
eventCliSession,
eventNextPlugins,
} from '../telemetry/events'
import { Telemetry } from '../telemetry/storage'
import { CompilerResult, runCompiler } from './compiler'
import { createEntrypoints, createPagesMapping } from './entries'
import { generateBuildId } from './generate-build-id'
import { isWriteable } from './is-writeable'
import createSpinner from './spinner'
import {
collectPages,
getJsPageSizeInKb,
getNamedExports,
hasCustomGetInitialProps,
isPageStatic,
PageInfo,
printCustomRoutes,
printTreeView,
} from './utils'
import getBaseWebpackConfig from './webpack-config'
import { PagesManifest } from './webpack/plugins/pages-manifest-plugin'
import { writeBuildId } from './write-build-id'
import * as Log from './output/log'
const staticCheckWorker = require.resolve('./utils')
export type SsgRoute = {
initialRevalidateSeconds: number | false
srcRoute: string | null
dataRoute: string
}
export type DynamicSsgRoute = {
routeRegex: string
fallback: string | null | false
dataRoute: string
dataRouteRegex: string
}
export type PrerenderManifest = {
version: 2
routes: { [route: string]: SsgRoute }
dynamicRoutes: { [route: string]: DynamicSsgRoute }
notFoundRoutes: string[]
preview: __ApiPreviewProps
}
export default async function build(
dir: string,
conf = null,
reactProductionProfiling = false,
debugOutput = false
): Promise<void> {
if (!(await isWriteable(dir))) {
throw new Error(
'> Build directory is not writeable. https://err.sh/vercel/next.js/build-dir-not-writeable'
)
}
// attempt to load global env values so they are available in next.config.js
const { loadedEnvFiles } = loadEnvConfig(dir, false, Log)
const config = loadConfig(PHASE_PRODUCTION_BUILD, dir, conf)
const { target } = config
const buildId = await generateBuildId(config.generateBuildId, nanoid)
const distDir = path.join(dir, config.distDir)
const { headers, rewrites, redirects } = await loadCustomRoutes(config)
if (ciEnvironment.isCI && !ciEnvironment.hasNextSupport) {
const cacheDir = path.join(distDir, 'cache')
const hasCache = await fileExists(cacheDir)
if (!hasCache) {
// Intentionally not piping to stderr in case people fail in CI when
// stderr is detected.
console.log(
`${Log.prefixes.warn} No build cache found. Please configure build caching for faster rebuilds. Read more: https://err.sh/next.js/no-cache`
)
}
}
const buildSpinner = createSpinner({
prefixText: `${Log.prefixes.info} Creating an optimized production build`,
})
const telemetry = new Telemetry({ distDir })
const publicDir = path.join(dir, 'public')
const pagesDir = findPagesDir(dir)
const hasPublicDir = await fileExists(publicDir)
telemetry.record(
eventCliSession(PHASE_PRODUCTION_BUILD, dir, {
cliCommand: 'build',
isSrcDir: path.relative(dir, pagesDir!).startsWith('src'),
hasNowJson: !!(await findUp('now.json', { cwd: dir })),
isCustomServer: null,
})
)
eventNextPlugins(path.resolve(dir)).then((events) => telemetry.record(events))
const ignoreTypeScriptErrors = Boolean(config.typescript?.ignoreBuildErrors)
await verifyTypeScriptSetup(dir, pagesDir, !ignoreTypeScriptErrors)
let tracer: any = null
if (config.experimental.profiling) {
const { createTrace } = require('./profiler/profiler.js')
tracer = createTrace(path.join(distDir, `profile-events.json`))
tracer.profiler.startProfiling()
}
const isLikeServerless = isTargetLikeServerless(target)
const pagePaths: string[] = await collectPages(
pagesDir,
config.pageExtensions
)
// needed for static exporting since we want to replace with HTML
// files
const allStaticPages = new Set<string>()
let allPageInfos = new Map<string, PageInfo>()
const previewProps: __ApiPreviewProps = {
previewModeId: crypto.randomBytes(16).toString('hex'),
previewModeSigningKey: crypto.randomBytes(32).toString('hex'),
previewModeEncryptionKey: crypto.randomBytes(32).toString('hex'),
}
const mappedPages = createPagesMapping(pagePaths, config.pageExtensions)
const entrypoints = createEntrypoints(
mappedPages,
target,
buildId,
previewProps,
config,
loadedEnvFiles
)
const pageKeys = Object.keys(mappedPages)
const conflictingPublicFiles: string[] = []
const hasCustomErrorPage = mappedPages['/_error'].startsWith(
'private-next-pages'
)
const hasPages404 = Boolean(
mappedPages['/404'] && mappedPages['/404'].startsWith('private-next-pages')
)
let hasNonStaticErrorPage: boolean
if (hasPublicDir) {
const hasPublicUnderScoreNextDir = await fileExists(
path.join(publicDir, '_next')
)
if (hasPublicUnderScoreNextDir) {
throw new Error(PUBLIC_DIR_MIDDLEWARE_CONFLICT)
}
}
// Check if pages conflict with files in `public`
// Only a page of public file can be served, not both.
for (const page in mappedPages) {
const hasPublicPageFile = await fileExists(
path.join(publicDir, page === '/' ? '/index' : page),
'file'
)
if (hasPublicPageFile) {
conflictingPublicFiles.push(page)
}
}
const numConflicting = conflictingPublicFiles.length
if (numConflicting) {
throw new Error(
`Conflicting public and page file${
numConflicting === 1 ? ' was' : 's were'
} found. https://err.sh/vercel/next.js/conflicting-public-file-page\n${conflictingPublicFiles.join(
'\n'
)}`
)
}
const nestedReservedPages = pageKeys.filter((page) => {
return (
page.match(/\/(_app|_document|_error)$/) && path.dirname(page) !== '/'
)
})
if (nestedReservedPages.length) {
Log.warn(
`The following reserved Next.js pages were detected not directly under the pages directory:\n` +
nestedReservedPages.join('\n') +
`\nSee more info here: https://err.sh/next.js/nested-reserved-page\n`
)
}
const buildCustomRoute = (
r: {
source: string
basePath?: false
statusCode?: number
destination?: string
},
type: RouteType
) => {
const keys: any[] = []
if (r.basePath !== false) {
r.source = `${config.basePath}${r.source}`
if (r.destination && r.destination.startsWith('/')) {
r.destination = `${config.basePath}${r.destination}`
}
}
const routeRegex = pathToRegexp(r.source, keys, {
strict: true,
sensitive: false,
delimiter: '/', // default is `/#?`, but Next does not pass query info
})
return {
...r,
...(type === 'redirect'
? {
statusCode: getRedirectStatus(r as Redirect),
permanent: undefined,
}
: {}),
regex: normalizeRouteRegex(routeRegex.source),
}
}
const routesManifestPath = path.join(distDir, ROUTES_MANIFEST)
const routesManifest: {
version: number
pages404: boolean
basePath: string
redirects: Array<ReturnType<typeof buildCustomRoute>>
rewrites: Array<ReturnType<typeof buildCustomRoute>>
headers: Array<ReturnType<typeof buildCustomRoute>>
dynamicRoutes: Array<{
page: string
regex: string
namedRegex?: string
routeKeys?: { [key: string]: string }
}>
dataRoutes: Array<{
page: string
routeKeys?: { [key: string]: string }
dataRouteRegex: string
namedDataRouteRegex?: string
}>
} = {
version: 3,
pages404: true,
basePath: config.basePath,
redirects: redirects.map((r) => buildCustomRoute(r, 'redirect')),
rewrites: rewrites.map((r) => buildCustomRoute(r, 'rewrite')),
headers: headers.map((r) => buildCustomRoute(r, 'header')),
dynamicRoutes: getSortedRoutes(pageKeys)
.filter(isDynamicRoute)
.map((page) => {
const routeRegex = getRouteRegex(page)
return {
page,
regex: normalizeRouteRegex(routeRegex.re.source),
routeKeys: routeRegex.routeKeys,
namedRegex: routeRegex.namedRegex,
}
}),
dataRoutes: [],
}
await promises.mkdir(distDir, { recursive: true })
// We need to write the manifest with rewrites before build
// so serverless can import the manifest
await promises.writeFile(
routesManifestPath,
JSON.stringify(routesManifest),
'utf8'
)
const configs = await Promise.all([
getBaseWebpackConfig(dir, {
tracer,
buildId,
reactProductionProfiling,
isServer: false,
config,
target,
pagesDir,
entrypoints: entrypoints.client,
rewrites,
}),
getBaseWebpackConfig(dir, {
tracer,
buildId,
reactProductionProfiling,
isServer: true,
config,
target,
pagesDir,
entrypoints: entrypoints.server,
rewrites,
}),
])
const clientConfig = configs[0]
if (
clientConfig.optimization &&
(clientConfig.optimization.minimize !== true ||
(clientConfig.optimization.minimizer &&
clientConfig.optimization.minimizer.length === 0))
) {
Log.warn(
`Production code optimization has been disabled in your project. Read more: https://err.sh/vercel/next.js/minification-disabled`
)
}
const webpackBuildStart = process.hrtime()
let result: CompilerResult = { warnings: [], errors: [] }
// TODO: why do we need this?? https://github.com/vercel/next.js/issues/8253
if (isLikeServerless) {
const clientResult = await runCompiler(clientConfig)
// Fail build if clientResult contains errors
if (clientResult.errors.length > 0) {
result = {
warnings: [...clientResult.warnings],
errors: [...clientResult.errors],
}
} else {
const serverResult = await runCompiler(configs[1])
result = {
warnings: [...clientResult.warnings, ...serverResult.warnings],
errors: [...clientResult.errors, ...serverResult.errors],
}
}
} else {
result = await runCompiler(configs)
}
const webpackBuildEnd = process.hrtime(webpackBuildStart)
if (buildSpinner) {
buildSpinner.stopAndPersist()
}
result = formatWebpackMessages(result)
if (result.errors.length > 0) {
// Only keep the first error. Others are often indicative
// of the same problem, but confuse the reader with noise.
if (result.errors.length > 1) {
result.errors.length = 1
}
const error = result.errors.join('\n\n')
console.error(chalk.red('Failed to compile.\n'))
if (
error.indexOf('private-next-pages') > -1 &&
error.indexOf('does not contain a default export') > -1
) {
const page_name_regex = /'private-next-pages\/(?<page_name>[^']*)'/
const parsed = page_name_regex.exec(error)
const page_name = parsed && parsed.groups && parsed.groups.page_name
throw new Error(
`webpack build failed: found page without a React Component as default export in pages/${page_name}\n\nSee https://err.sh/vercel/next.js/page-without-valid-component for more info.`
)
}
console.error(error)
console.error()
if (
error.indexOf('private-next-pages') > -1 ||
error.indexOf('__next_polyfill__') > -1
) {
throw new Error(
'> webpack config.resolve.alias was incorrectly overridden. https://err.sh/vercel/next.js/invalid-resolve-alias'
)
}
throw new Error('> Build failed because of webpack errors')
} else {
telemetry.record(
eventBuildCompleted(pagePaths, {
durationInSeconds: webpackBuildEnd[0],
})
)
if (result.warnings.length > 0) {
Log.warn('Compiled with warnings\n')
console.warn(result.warnings.join('\n\n'))
console.warn()
} else {
Log.info('Compiled successfully')
}
}
const postCompileSpinner = createSpinner({
prefixText: `${Log.prefixes.info} Collecting page data`,
})
const manifestPath = path.join(
distDir,
isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY,
PAGES_MANIFEST
)
const buildManifestPath = path.join(distDir, BUILD_MANIFEST)
const ssgPages = new Set<string>()
const ssgStaticFallbackPages = new Set<string>()
const ssgBlockingFallbackPages = new Set<string>()
const staticPages = new Set<string>()
const invalidPages = new Set<string>()
const hybridAmpPages = new Set<string>()
const serverPropsPages = new Set<string>()
const additionalSsgPaths = new Map<string, Array<string>>()
const pageInfos = new Map<string, PageInfo>()
const pagesManifest = JSON.parse(
await promises.readFile(manifestPath, 'utf8')
) as PagesManifest
const buildManifest = JSON.parse(
await promises.readFile(buildManifestPath, 'utf8')
) as BuildManifest
let customAppGetInitialProps: boolean | undefined
let namedExports: Array<string> | undefined
process.env.NEXT_PHASE = PHASE_PRODUCTION_BUILD
const staticCheckWorkers = new Worker(staticCheckWorker, {
numWorkers: config.experimental.cpus,
enableWorkerThreads: config.experimental.workerThreads,
}) as Worker & { isPageStatic: typeof isPageStatic }
staticCheckWorkers.getStdout().pipe(process.stdout)
staticCheckWorkers.getStderr().pipe(process.stderr)
const runtimeEnvConfig = {
publicRuntimeConfig: config.publicRuntimeConfig,
serverRuntimeConfig: config.serverRuntimeConfig,
}
hasNonStaticErrorPage =
hasCustomErrorPage &&
(await hasCustomGetInitialProps(
getPagePath('/_error', distDir, isLikeServerless),
runtimeEnvConfig,
false
))
const analysisBegin = process.hrtime()
await Promise.all(
pageKeys.map(async (page) => {
const actualPage = normalizePagePath(page)
const [selfSize, allSize] = await getJsPageSizeInKb(
actualPage,
distDir,
buildManifest,
config.experimental.modern
)
let isSsg = false
let isStatic = false
let isHybridAmp = false
let ssgPageRoutes: string[] | null = null
const nonReservedPage = !page.match(
/^\/(_app|_error|_document|api(\/|$))/
)
if (nonReservedPage) {
const serverBundle = getPagePath(page, distDir, isLikeServerless)
if (customAppGetInitialProps === undefined) {
customAppGetInitialProps = hasCustomGetInitialProps(
isLikeServerless
? serverBundle
: getPagePath('/_app', distDir, isLikeServerless),
runtimeEnvConfig,
true
)
namedExports = getNamedExports(
isLikeServerless
? serverBundle
: getPagePath('/_app', distDir, isLikeServerless),
runtimeEnvConfig
)
if (customAppGetInitialProps) {
console.warn(
chalk.bold.yellow(`Warning: `) +
chalk.yellow(
`You have opted-out of Automatic Static Optimization due to \`getInitialProps\` in \`pages/_app\`. This does not opt-out pages with \`getStaticProps\``
)
)
console.warn(
'Read more: https://err.sh/next.js/opt-out-auto-static-optimization\n'
)
}
}
try {
let workerResult = await staticCheckWorkers.isPageStatic(
page,
serverBundle,
runtimeEnvConfig,
config.experimental.i18n?.locales,
config.experimental.i18n?.defaultLocale
)
if (workerResult.isHybridAmp) {
isHybridAmp = true
hybridAmpPages.add(page)
}
if (workerResult.hasStaticProps) {
ssgPages.add(page)
isSsg = true
if (workerResult.prerenderRoutes) {
additionalSsgPaths.set(page, workerResult.prerenderRoutes)
ssgPageRoutes = workerResult.prerenderRoutes
}
if (workerResult.prerenderFallback === 'unstable_blocking') {
ssgBlockingFallbackPages.add(page)
} else if (workerResult.prerenderFallback === true) {
ssgStaticFallbackPages.add(page)
}
} else if (workerResult.hasServerProps) {
serverPropsPages.add(page)
} else if (
workerResult.isStatic &&
customAppGetInitialProps === false
) {
staticPages.add(page)
isStatic = true
}
if (hasPages404 && page === '/404') {
if (!workerResult.isStatic && !workerResult.hasStaticProps) {
throw new Error(PAGES_404_GET_INITIAL_PROPS_ERROR)
}
// we need to ensure the 404 lambda is present since we use
// it when _app has getInitialProps
if (customAppGetInitialProps && !workerResult.hasStaticProps) {
staticPages.delete(page)
}
}
} catch (err) {
if (err.message !== 'INVALID_DEFAULT_EXPORT') throw err
invalidPages.add(page)
}
}
pageInfos.set(page, {
size: selfSize,
totalSize: allSize,
static: isStatic,
isSsg,
isHybridAmp,
ssgPageRoutes,
initialRevalidateSeconds: false,
})
})
)
staticCheckWorkers.end()
if (serverPropsPages.size > 0 || ssgPages.size > 0) {
// We update the routes manifest after the build with the
// data routes since we can't determine these until after build
routesManifest.dataRoutes = getSortedRoutes([
...serverPropsPages,
...ssgPages,
]).map((page) => {
const pagePath = normalizePagePath(page)
const dataRoute = path.posix.join(
'/_next/data',
buildId,
`${pagePath}.json`
)
let dataRouteRegex: string
let namedDataRouteRegex: string | undefined
let routeKeys: { [named: string]: string } | undefined
if (isDynamicRoute(page)) {
const routeRegex = getRouteRegex(dataRoute.replace(/\.json$/, ''))
dataRouteRegex = normalizeRouteRegex(
routeRegex.re.source.replace(/\(\?:\\\/\)\?\$$/, '\\.json$')
)
namedDataRouteRegex = routeRegex.namedRegex!.replace(
/\(\?:\/\)\?\$$/,
'\\.json$'
)
routeKeys = routeRegex.routeKeys
} else {
dataRouteRegex = normalizeRouteRegex(
new RegExp(
`^${path.posix.join(
'/_next/data',
escapeStringRegexp(buildId),
`${pagePath}.json`
)}$`
).source
)
}
return {
page,
routeKeys,
dataRouteRegex,
namedDataRouteRegex,
}
})
await promises.writeFile(
routesManifestPath,
JSON.stringify(routesManifest),
'utf8'
)
}
// Since custom _app.js can wrap the 404 page we have to opt-out of static optimization if it has getInitialProps
// Only export the static 404 when there is no /_error present
const useStatic404 =
!customAppGetInitialProps && (!hasNonStaticErrorPage || hasPages404)
if (invalidPages.size > 0) {
throw new Error(
`Build optimization failed: found page${
invalidPages.size === 1 ? '' : 's'
} without a React Component as default export in \n${[...invalidPages]
.map((pg) => `pages${pg}`)
.join(
'\n'
)}\n\nSee https://err.sh/vercel/next.js/page-without-valid-component for more info.\n`
)
}
await writeBuildId(distDir, buildId)
const finalPrerenderRoutes: { [route: string]: SsgRoute } = {}
const tbdPrerenderRoutes: string[] = []
let ssgNotFoundPaths: string[] = []
if (postCompileSpinner) postCompileSpinner.stopAndPersist()
if (staticPages.size > 0 || ssgPages.size > 0 || useStatic404) {
const combinedPages = [...staticPages, ...ssgPages]
const exportApp = require('../export').default
const exportOptions = {
silent: false,
buildExport: true,
threads: config.experimental.cpus,
pages: combinedPages,
outdir: path.join(distDir, 'export'),
statusMessage: 'Generating static pages',
}
const exportConfig: any = {
...config,
initialPageRevalidationMap: {},
ssgNotFoundPaths: [] as string[],
// Default map will be the collection of automatic statically exported
// pages and incremental pages.
// n.b. we cannot handle this above in combinedPages because the dynamic
// page must be in the `pages` array, but not in the mapping.
exportPathMap: (defaultMap: any) => {
const { i18n } = config.experimental
// Dynamically routed pages should be prerendered to be used as
// a client-side skeleton (fallback) while data is being fetched.
// This ensures the end-user never sees a 500 or slow response from the
// server.
//
// Note: prerendering disables automatic static optimization.
ssgPages.forEach((page) => {
if (isDynamicRoute(page)) {
tbdPrerenderRoutes.push(page)
if (ssgStaticFallbackPages.has(page)) {
// Override the rendering for the dynamic page to be treated as a
// fallback render.
if (i18n) {
defaultMap[`/${i18n.defaultLocale}${page}`] = {
page,
query: { __nextFallback: true },
}
} else {
defaultMap[page] = { page, query: { __nextFallback: true } }
}
} else {
// Remove dynamically routed pages from the default path map when
// fallback behavior is disabled.
delete defaultMap[page]
}
}
})
// Append the "well-known" routes we should prerender for, e.g. blog
// post slugs.
additionalSsgPaths.forEach((routes, page) => {
routes.forEach((route) => {
defaultMap[route] = { page }
})
})
if (useStatic404) {
defaultMap['/404'] = {
page: hasPages404 ? '/404' : '/_error',
}
}
if (i18n) {
for (const page of [
...staticPages,
...ssgPages,
...(useStatic404 ? ['/404'] : []),
]) {
const isSsg = ssgPages.has(page)
const isDynamic = isDynamicRoute(page)
const isFallback = isSsg && ssgStaticFallbackPages.has(page)
for (const locale of i18n.locales) {
// skip fallback generation for SSG pages without fallback mode
if (isSsg && isDynamic && !isFallback) continue
const outputPath = `/${locale}${page === '/' ? '' : page}`
defaultMap[outputPath] = {
page: defaultMap[page].page,
query: { __nextLocale: locale },
}
if (isFallback) {
defaultMap[outputPath].query.__nextFallback = true
}
}
if (isSsg && !isFallback) {
// remove non-locale prefixed variant from defaultMap
delete defaultMap[page]
}
}
}
return defaultMap
},
trailingSlash: false,
}
await exportApp(dir, exportOptions, exportConfig)
const postBuildSpinner = createSpinner({
prefixText: `${Log.prefixes.info} Finalizing page optimization`,
})
ssgNotFoundPaths = exportConfig.ssgNotFoundPaths
// remove server bundles that were exported
for (const page of staticPages) {
const serverBundle = getPagePath(page, distDir, isLikeServerless)
await promises.unlink(serverBundle)
}
const serverOutputDir = path.join(
distDir,
isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY
)
const moveExportedPage = async (
originPage: string,
page: string,
file: string,
isSsg: boolean,
ext: 'html' | 'json',
additionalSsgFile = false
) => {
file = `${file}.${ext}`
const orig = path.join(exportOptions.outdir, file)
const pagePath = getPagePath(originPage, distDir, isLikeServerless)
const relativeDest = path
.relative(
serverOutputDir,
path.join(
path.join(
pagePath,
// strip leading / and then recurse number of nested dirs
// to place from base folder
originPage
.substr(1)
.split('/')
.map(() => '..')
.join('/')
),
file
)
)
.replace(/\\/g, '/')
const dest = path.join(
distDir,
isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY,
relativeDest
)
if (!isSsg) {
pagesManifest[page] = relativeDest
}
const { i18n } = config.experimental
const isNotFound = ssgNotFoundPaths.includes(page)
// for SSG files with i18n the non-prerendered variants are
// output with the locale prefixed so don't attempt moving
// without the prefix
if ((!i18n || additionalSsgFile) && !isNotFound) {
await promises.mkdir(path.dirname(dest), { recursive: true })
await promises.rename(orig, dest)
} else if (i18n && !isSsg) {
// this will be updated with the locale prefixed variant
// since all files are output with the locale prefix
delete pagesManifest[page]
}
if (i18n) {
if (additionalSsgFile) return
for (const locale of i18n.locales) {
const curPath = `/${locale}${page === '/' ? '' : page}`
const localeExt = page === '/' ? path.extname(file) : ''
const relativeDestNoPages = relativeDest.substr('pages/'.length)
if (isSsg && ssgNotFoundPaths.includes(curPath)) {
continue
}
const updatedRelativeDest = path.join(
'pages',
locale + localeExt,
// if it's the top-most index page we want it to be locale.EXT
// instead of locale/index.html
page === '/' ? '' : relativeDestNoPages
)
const updatedOrig = path.join(
exportOptions.outdir,
locale + localeExt,
page === '/' ? '' : file
)
const updatedDest = path.join(
distDir,
isLikeServerless ? SERVERLESS_DIRECTORY : SERVER_DIRECTORY,
updatedRelativeDest
)
if (!isSsg) {
pagesManifest[curPath] = updatedRelativeDest
}
await promises.mkdir(path.dirname(updatedDest), { recursive: true })
await promises.rename(updatedOrig, updatedDest)
}
}
}
// Only move /404 to /404 when there is no custom 404 as in that case we don't know about the 404 page
if (!hasPages404 && useStatic404) {
await moveExportedPage('/_error', '/404', '/404', false, 'html')
}
for (const page of combinedPages) {
const isSsg = ssgPages.has(page)
const isStaticSsgFallback = ssgStaticFallbackPages.has(page)
const isDynamic = isDynamicRoute(page)
const hasAmp = hybridAmpPages.has(page)
const file = normalizePagePath(page)
// The dynamic version of SSG pages are only prerendered if the fallback
// is enabled. Below, we handle the specific prerenders of these.
if (!(isSsg && isDynamic && !isStaticSsgFallback)) {
await moveExportedPage(page, page, file, isSsg, 'html')
}
if (hasAmp && (!isSsg || (isSsg && !isDynamic))) {
const ampPage = `${file}.amp`
await moveExportedPage(page, ampPage, ampPage, isSsg, 'html')
if (isSsg) {
await moveExportedPage(page, ampPage, ampPage, isSsg, 'json')
}
}
if (isSsg) {
// For a non-dynamic SSG page, we must copy its data file from export.
if (!isDynamic) {
await moveExportedPage(page, page, file, true, 'json')
finalPrerenderRoutes[page] = {
initialRevalidateSeconds:
exportConfig.initialPageRevalidationMap[page],
srcRoute: null,
dataRoute: path.posix.join('/_next/data', buildId, `${file}.json`),
}
// Set Page Revalidation Interval
const pageInfo = pageInfos.get(page)
if (pageInfo) {
pageInfo.initialRevalidateSeconds =
exportConfig.initialPageRevalidationMap[page]
pageInfos.set(page, pageInfo)
}
} else {
// For a dynamic SSG page, we did not copy its data exports and only
// copy the fallback HTML file (if present).
// We must also copy specific versions of this page as defined by
// `getStaticPaths` (additionalSsgPaths).
const extraRoutes = additionalSsgPaths.get(page) || []
for (const route of extraRoutes) {
const pageFile = normalizePagePath(route)
await moveExportedPage(page, route, pageFile, true, 'html', true)
await moveExportedPage(page, route, pageFile, true, 'json', true)
if (hasAmp) {
const ampPage = `${pageFile}.amp`
await moveExportedPage(page, ampPage, ampPage, true, 'html', true)
await moveExportedPage(page, ampPage, ampPage, true, 'json', true)
}
finalPrerenderRoutes[route] = {
initialRevalidateSeconds:
exportConfig.initialPageRevalidationMap[route],
srcRoute: page,
dataRoute: path.posix.join(
'/_next/data',
buildId,
`${normalizePagePath(route)}.json`
),
}
// Set route Revalidation Interval
const pageInfo = pageInfos.get(route)
if (pageInfo) {
pageInfo.initialRevalidateSeconds =