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import type { ClientPagesLoaderOptions } from './webpack/loaders/next-client-pages-loader'
import type { MiddlewareLoaderOptions } from './webpack/loaders/next-middleware-loader'
import type { EdgeSSRLoaderQuery } from './webpack/loaders/next-edge-ssr-loader'
import type { EdgeAppRouteLoaderQuery } from './webpack/loaders/next-edge-app-route-loader'
import type { NextConfigComplete } from '../server/config-shared'
import type { webpack } from 'next/dist/compiled/webpack/webpack'
import type {
  MiddlewareConfig,
  MiddlewareMatcher,
  PageStaticInfo,
} from './analysis/get-page-static-info'
import type { LoadedEnvFiles } from '@next/env'
import type { AppLoaderOptions } from './webpack/loaders/next-app-loader'

import { posix, join, dirname, extname, normalize } from 'path'
import { stringify } from 'querystring'
import fs from 'fs'
import {
  PAGES_DIR_ALIAS,
  ROOT_DIR_ALIAS,
  APP_DIR_ALIAS,
  WEBPACK_LAYERS,
  INSTRUMENTATION_HOOK_FILENAME,
} from '../lib/constants'
import { isAPIRoute } from '../lib/is-api-route'
import { isEdgeRuntime } from '../lib/is-edge-runtime'
import {
  APP_CLIENT_INTERNALS,
  RSC_MODULE_TYPES,
  UNDERSCORE_NOT_FOUND_ROUTE_ENTRY,
} from '../shared/lib/constants'
import {
  CLIENT_STATIC_FILES_RUNTIME_AMP,
  CLIENT_STATIC_FILES_RUNTIME_MAIN,
  CLIENT_STATIC_FILES_RUNTIME_MAIN_APP,
  CLIENT_STATIC_FILES_RUNTIME_POLYFILLS,
  CLIENT_STATIC_FILES_RUNTIME_REACT_REFRESH,
  COMPILER_NAMES,
  EDGE_RUNTIME_WEBPACK,
} from '../shared/lib/constants'
import type { CompilerNameValues } from '../shared/lib/constants'
import type { __ApiPreviewProps } from '../server/api-utils'
import {
  isMiddlewareFile,
  isMiddlewareFilename,
  isInstrumentationHookFile,
  isInstrumentationHookFilename,
  reduceAppConfig,
} from './utils'
import {
  getAppPageStaticInfo,
  getPageStaticInfo,
} from './analysis/get-page-static-info'
import { normalizePathSep } from '../shared/lib/page-path/normalize-path-sep'
import { normalizePagePath } from '../shared/lib/page-path/normalize-page-path'
import type { ServerRuntime } from '../types'
import { normalizeAppPath } from '../shared/lib/router/utils/app-paths'
import { encodeMatchers } from './webpack/loaders/next-middleware-loader'
import type { EdgeFunctionLoaderOptions } from './webpack/loaders/next-edge-function-loader'
import { isAppRouteRoute } from '../lib/is-app-route-route'
import {
  normalizeMetadataPageToRoute,
  normalizeMetadataRoute,
} from '../lib/metadata/get-metadata-route'
import { getRouteLoaderEntry } from './webpack/loaders/next-route-loader'
import {
  isInternalComponent,
  isNonRoutePagesPage,
} from '../lib/is-internal-component'
import { isMetadataRouteFile } from '../lib/metadata/is-metadata-route'
import { RouteKind } from '../server/route-kind'
import { encodeToBase64 } from './webpack/loaders/utils'
import { normalizeCatchAllRoutes } from './normalize-catchall-routes'
import type { PageExtensions } from './page-extensions-type'
import type { MappedPages } from './build-context'
import { PAGE_TYPES } from '../lib/page-types'
import { isAppPageRoute } from '../lib/is-app-page-route'

export function sortByPageExts(pageExtensions: PageExtensions) {
  return (a: string, b: string) => {
    // prioritize entries according to pageExtensions order
    // for consistency as fs order can differ across systems
    // NOTE: this is reversed so preferred comes last and
    // overrides prior
    const aExt = extname(a)
    const bExt = extname(b)

    const aNoExt = a.substring(0, a.length - aExt.length)
    const bNoExt = a.substring(0, b.length - bExt.length)

    if (aNoExt !== bNoExt) return 0

    // find extension index (skip '.' as pageExtensions doesn't have it)
    const aExtIndex = pageExtensions.indexOf(aExt.substring(1))
    const bExtIndex = pageExtensions.indexOf(bExt.substring(1))

    return bExtIndex - aExtIndex
  }
}

export async function getStaticInfoIncludingLayouts({
  isInsideAppDir,
  pageExtensions,
  pageFilePath,
  appDir,
  config: nextConfig,
  isDev,
  page,
}: {
  isInsideAppDir: boolean
  pageExtensions: PageExtensions
  pageFilePath: string
  appDir: string | undefined
  config: NextConfigComplete
  isDev: boolean | undefined
  page: string
}): Promise<PageStaticInfo> {
  // TODO: sync types for pages: PAGE_TYPES, ROUTER_TYPE, 'app' | 'pages', etc.
  const pageType = isInsideAppDir ? PAGE_TYPES.APP : PAGE_TYPES.PAGES

  const pageStaticInfo = await getPageStaticInfo({
    nextConfig,
    pageFilePath,
    isDev,
    page,
    pageType,
  })

  if (pageStaticInfo.type === PAGE_TYPES.PAGES || !appDir) {
    return pageStaticInfo
  }

  const segments = [pageStaticInfo]

  // inherit from layout files only if it's a page route
  if (isAppPageRoute(page)) {
    const layoutFiles = []
    const potentialLayoutFiles = pageExtensions.map((ext) => 'layout.' + ext)
    let dir = dirname(pageFilePath)

    // Uses startsWith to not include directories further up.
    while (dir.startsWith(appDir)) {
      for (const potentialLayoutFile of potentialLayoutFiles) {
        const layoutFile = join(dir, potentialLayoutFile)
        if (!fs.existsSync(layoutFile)) {
          continue
        }
        layoutFiles.push(layoutFile)
      }
      // Walk up the directory tree
      dir = join(dir, '..')
    }

    for (const layoutFile of layoutFiles) {
      const layoutStaticInfo = await getAppPageStaticInfo({
        nextConfig,
        pageFilePath: layoutFile,
        isDev,
        page,
        pageType: isInsideAppDir ? PAGE_TYPES.APP : PAGE_TYPES.PAGES,
      })

      segments.unshift(layoutStaticInfo)
    }
  }

  const config = reduceAppConfig(segments)

  return {
    ...pageStaticInfo,
    config,
    runtime: config.runtime,
    preferredRegion: config.preferredRegion,
    maxDuration: config.maxDuration,
  }
}

type ObjectValue<T> = T extends { [key: string]: infer V } ? V : never

/**
 * For a given page path removes the provided extensions.
 */
export function getPageFromPath(
  pagePath: string,
  pageExtensions: PageExtensions
) {
  let page = normalizePathSep(
    pagePath.replace(new RegExp(`\\.+(${pageExtensions.join('|')})$`), '')
  )

  page = page.replace(/\/index$/, '')

  return page === '' ? '/' : page
}

export function getPageFilePath({
  absolutePagePath,
  pagesDir,
  appDir,
  rootDir,
}: {
  absolutePagePath: string
  pagesDir: string | undefined
  appDir: string | undefined
  rootDir: string
}) {
  if (absolutePagePath.startsWith(PAGES_DIR_ALIAS) && pagesDir) {
    return absolutePagePath.replace(PAGES_DIR_ALIAS, pagesDir)
  }

  if (absolutePagePath.startsWith(APP_DIR_ALIAS) && appDir) {
    return absolutePagePath.replace(APP_DIR_ALIAS, appDir)
  }

  if (absolutePagePath.startsWith(ROOT_DIR_ALIAS)) {
    return absolutePagePath.replace(ROOT_DIR_ALIAS, rootDir)
  }

  return require.resolve(absolutePagePath)
}

/**
 * Creates a mapping of route to page file path for a given list of page paths.
 * For example ['/middleware.ts'] is turned into  { '/middleware': `${ROOT_DIR_ALIAS}/middleware.ts` }
 */
export async function createPagesMapping({
  isDev,
  pageExtensions,
  pagePaths,
  pagesType,
  pagesDir,
  appDir,
}: {
  isDev: boolean
  pageExtensions: PageExtensions
  pagePaths: string[]
  pagesType: PAGE_TYPES
  pagesDir: string | undefined
  appDir: string | undefined
}): Promise<MappedPages> {
  const isAppRoute = pagesType === 'app'
  const pages: MappedPages = {}
  const promises = pagePaths.map<Promise<void>>(async (pagePath) => {
    // Do not process .d.ts files as routes
    if (pagePath.endsWith('.d.ts') && pageExtensions.includes('ts')) {
      return
    }

    let pageKey = getPageFromPath(pagePath, pageExtensions)
    if (isAppRoute) {
      pageKey = pageKey.replace(/%5F/g, '_')
      if (pageKey === '/not-found') {
        pageKey = UNDERSCORE_NOT_FOUND_ROUTE_ENTRY
      }
    }

    const normalizedPath = normalizePathSep(
      join(
        pagesType === 'pages'
          ? PAGES_DIR_ALIAS
          : pagesType === 'app'
            ? APP_DIR_ALIAS
            : ROOT_DIR_ALIAS,
        pagePath
      )
    )

    let route = pagesType === 'app' ? normalizeMetadataRoute(pageKey) : pageKey

    if (
      pagesType === 'app' &&
      isMetadataRouteFile(pagePath, pageExtensions, true)
    ) {
      const filePath = join(appDir!, pagePath)
      const staticInfo = await getPageStaticInfo({
        nextConfig: {},
        pageFilePath: filePath,
        isDev,
        page: pageKey,
        pageType: pagesType,
      })

      route = normalizeMetadataPageToRoute(
        route,
        !!(staticInfo.generateImageMetadata || staticInfo.generateSitemaps)
      )
    }

    pages[route] = normalizedPath
  })

  await Promise.all(promises)

  switch (pagesType) {
    case PAGE_TYPES.ROOT: {
      return pages
    }
    case PAGE_TYPES.APP: {
      const hasAppPages = Object.keys(pages).some((page) =>
        page.endsWith('/page')
      )
      return {
        // If there's any app pages existed, add a default /_not-found route as 404.
        // If there's any custom /_not-found page, it will override the default one.
        ...(hasAppPages && {
          [UNDERSCORE_NOT_FOUND_ROUTE_ENTRY]: require.resolve(
            'next/dist/client/components/builtin/global-not-found'
          ),
        }),
        ...pages,
      }
    }
    case PAGE_TYPES.PAGES: {
      if (isDev) {
        delete pages['/_app']
        delete pages['/_error']
        delete pages['/_document']
      }

      // In development we always alias these to allow Webpack to fallback to
      // the correct source file so that HMR can work properly when a file is
      // added or removed.
      const root = isDev && pagesDir ? PAGES_DIR_ALIAS : 'next/dist/pages'

      return {
        '/_app': `${root}/_app`,
        '/_error': `${root}/_error`,
        '/_document': `${root}/_document`,
        ...pages,
      }
    }
    default: {
      return {}
    }
  }
}

export interface CreateEntrypointsParams {
  buildId: string
  config: NextConfigComplete
  envFiles: LoadedEnvFiles
  isDev?: boolean
  pages: MappedPages
  pagesDir?: string
  previewMode: __ApiPreviewProps
  rootDir: string
  rootPaths?: MappedPages
  appDir?: string
  appPaths?: MappedPages
  pageExtensions: PageExtensions
  hasInstrumentationHook?: boolean
}

export function getEdgeServerEntry(opts: {
  rootDir: string
  absolutePagePath: string
  buildId: string
  bundlePath: string
  config: NextConfigComplete
  isDev: boolean
  isServerComponent: boolean
  page: string
  pages: MappedPages
  middleware?: Partial<MiddlewareConfig>
  pagesType: PAGE_TYPES
  appDirLoader?: string
  hasInstrumentationHook?: boolean
  preferredRegion: string | string[] | undefined
  middlewareConfig?: MiddlewareConfig
}) {
  if (
    opts.pagesType === 'app' &&
    isAppRouteRoute(opts.page) &&
    opts.appDirLoader
  ) {
    const loaderParams: EdgeAppRouteLoaderQuery = {
      absolutePagePath: opts.absolutePagePath,
      page: opts.page,
      appDirLoader: Buffer.from(opts.appDirLoader || '').toString('base64'),
      nextConfig: Buffer.from(JSON.stringify(opts.config)).toString('base64'),
      preferredRegion: opts.preferredRegion,
      middlewareConfig: Buffer.from(
        JSON.stringify(opts.middlewareConfig || {})
      ).toString('base64'),
      cacheHandlers: JSON.stringify(
        opts.config.experimental.cacheHandlers || {}
      ),
    }

    return {
      import: `next-edge-app-route-loader?${stringify(loaderParams)}!`,
      layer: WEBPACK_LAYERS.reactServerComponents,
    }
  }

  if (isMiddlewareFile(opts.page)) {
    const loaderParams: MiddlewareLoaderOptions = {
      absolutePagePath: opts.absolutePagePath,
      page: opts.page,
      rootDir: opts.rootDir,
      matchers: opts.middleware?.matchers
        ? encodeMatchers(opts.middleware.matchers)
        : '',
      preferredRegion: opts.preferredRegion,
      middlewareConfig: Buffer.from(
        JSON.stringify(opts.middlewareConfig || {})
      ).toString('base64'),
    }

    return {
      import: `next-middleware-loader?${stringify(loaderParams)}!`,
      layer: WEBPACK_LAYERS.middleware,
    }
  }

  if (isAPIRoute(opts.page)) {
    const loaderParams: EdgeFunctionLoaderOptions = {
      absolutePagePath: opts.absolutePagePath,
      page: opts.page,
      rootDir: opts.rootDir,
      preferredRegion: opts.preferredRegion,
      middlewareConfig: Buffer.from(
        JSON.stringify(opts.middlewareConfig || {})
      ).toString('base64'),
    }

    return {
      import: `next-edge-function-loader?${stringify(loaderParams)}!`,
      layer: WEBPACK_LAYERS.apiEdge,
    }
  }

  const loaderParams: EdgeSSRLoaderQuery = {
    absolute500Path: opts.pages['/500'] || '',
    absoluteAppPath: opts.pages['/_app'],
    absoluteDocumentPath: opts.pages['/_document'],
    absoluteErrorPath: opts.pages['/_error'],
    absolutePagePath: opts.absolutePagePath,
    dev: opts.isDev,
    isServerComponent: opts.isServerComponent,
    page: opts.page,
    stringifiedConfig: Buffer.from(JSON.stringify(opts.config)).toString(
      'base64'
    ),
    pagesType: opts.pagesType,
    appDirLoader: Buffer.from(opts.appDirLoader || '').toString('base64'),
    sriEnabled: !opts.isDev && !!opts.config.experimental.sri?.algorithm,
    cacheHandler: opts.config.cacheHandler,
    preferredRegion: opts.preferredRegion,
    middlewareConfig: Buffer.from(
      JSON.stringify(opts.middlewareConfig || {})
    ).toString('base64'),
    serverActions: opts.config.experimental.serverActions,
    cacheHandlers: JSON.stringify(opts.config.experimental.cacheHandlers || {}),
  }

  return {
    import: `next-edge-ssr-loader?${JSON.stringify(loaderParams)}!`,
    // The Edge bundle includes the server in its entrypoint, so it has to
    // be in the SSR layer — we later convert the page request to the RSC layer
    // via a webpack rule.
    layer: opts.appDirLoader ? WEBPACK_LAYERS.serverSideRendering : undefined,
  }
}

export function getInstrumentationEntry(opts: {
  absolutePagePath: string
  isEdgeServer: boolean
  isDev: boolean
}) {
  // the '../' is needed to make sure the file is not chunked
  const filename = `${
    opts.isEdgeServer ? 'edge-' : opts.isDev ? '' : '../'
  }${INSTRUMENTATION_HOOK_FILENAME}.js`

  return {
    import: opts.absolutePagePath,
    filename,
    layer: WEBPACK_LAYERS.instrument,
  }
}

export function getAppLoader() {
  return process.env.BUILTIN_APP_LOADER
    ? `builtin:next-app-loader`
    : 'next-app-loader'
}

export function getAppEntry(opts: Readonly<AppLoaderOptions>) {
  if (process.env.NEXT_RSPACK && process.env.BUILTIN_APP_LOADER) {
    ;(opts as any).projectRoot = normalize(join(__dirname, '../../..'))
  }
  return {
    import: `${getAppLoader()}?${stringify(opts)}!`,
    layer: WEBPACK_LAYERS.reactServerComponents,
  }
}

export function getClientEntry(opts: {
  absolutePagePath: string
  page: string
}) {
  const loaderOptions: ClientPagesLoaderOptions = {
    absolutePagePath: opts.absolutePagePath,
    page: opts.page,
  }

  const pageLoader = `next-client-pages-loader?${stringify(loaderOptions)}!`

  // Make sure next/router is a dependency of _app or else chunk splitting
  // might cause the router to not be able to load causing hydration
  // to fail
  return opts.page === '/_app'
    ? [pageLoader, require.resolve('../client/router')]
    : pageLoader
}

export function runDependingOnPageType<T>(params: {
  onClient: () => T
  onEdgeServer: () => T
  onServer: () => T
  page: string
  pageRuntime: ServerRuntime
  pageType?: PAGE_TYPES
}): void {
  if (
    params.pageType === PAGE_TYPES.ROOT &&
    isInstrumentationHookFile(params.page)
  ) {
    params.onServer()
    params.onEdgeServer()
    return
  }

  if (isMiddlewareFile(params.page)) {
    if (params.pageRuntime === 'nodejs') {
      params.onServer()
      return
    } else {
      params.onEdgeServer()
      return
    }
  }

  if (isAPIRoute(params.page)) {
    if (isEdgeRuntime(params.pageRuntime)) {
      params.onEdgeServer()
      return
    }

    params.onServer()
    return
  }
  if (params.page === '/_document') {
    params.onServer()
    return
  }
  if (
    params.page === '/_app' ||
    params.page === '/_error' ||
    params.page === '/404' ||
    params.page === '/500'
  ) {
    params.onClient()
    params.onServer()
    return
  }
  if (isEdgeRuntime(params.pageRuntime)) {
    params.onClient()
    params.onEdgeServer()
    return
  }

  params.onClient()
  params.onServer()
  return
}

export async function createEntrypoints(
  params: CreateEntrypointsParams
): Promise<{
  client: webpack.EntryObject
  server: webpack.EntryObject
  edgeServer: webpack.EntryObject
  middlewareMatchers: undefined
}> {
  const {
    config,
    pages,
    pagesDir,
    isDev,
    rootDir,
    rootPaths,
    appDir,
    appPaths,
    pageExtensions,
  } = params
  const edgeServer: webpack.EntryObject = {}
  const server: webpack.EntryObject = {}
  const client: webpack.EntryObject = {}
  let middlewareMatchers: MiddlewareMatcher[] | undefined = undefined

  let appPathsPerRoute: Record<string, string[]> = {}
  if (appDir && appPaths) {
    for (const pathname in appPaths) {
      const normalizedPath = normalizeAppPath(pathname)
      const actualPath = appPaths[pathname]
      if (!appPathsPerRoute[normalizedPath]) {
        appPathsPerRoute[normalizedPath] = []
      }
      appPathsPerRoute[normalizedPath].push(
        // TODO-APP: refactor to pass the page path from createPagesMapping instead.
        getPageFromPath(actualPath, pageExtensions).replace(APP_DIR_ALIAS, '')
      )
    }

    // TODO: find a better place to do this
    normalizeCatchAllRoutes(appPathsPerRoute)

    // Make sure to sort parallel routes to make the result deterministic.
    appPathsPerRoute = Object.fromEntries(
      Object.entries(appPathsPerRoute).map(([k, v]) => [k, v.sort()])
    )
  }

  const getEntryHandler =
    (mappings: MappedPages, pagesType: PAGE_TYPES): ((page: string) => void) =>
    async (page) => {
      const bundleFile = normalizePagePath(page)
      const clientBundlePath = posix.join(pagesType, bundleFile)
      const serverBundlePath =
        pagesType === PAGE_TYPES.PAGES
          ? posix.join('pages', bundleFile)
          : pagesType === PAGE_TYPES.APP
            ? posix.join('app', bundleFile)
            : bundleFile.slice(1)

      const absolutePagePath = mappings[page]

      // Handle paths that have aliases
      const pageFilePath = getPageFilePath({
        absolutePagePath,
        pagesDir,
        appDir,
        rootDir,
      })

      const isInsideAppDir =
        !!appDir &&
        (absolutePagePath.startsWith(APP_DIR_ALIAS) ||
          absolutePagePath.startsWith(appDir))

      const staticInfo: PageStaticInfo = await getStaticInfoIncludingLayouts({
        isInsideAppDir,
        pageExtensions,
        pageFilePath,
        appDir,
        config,
        isDev,
        page,
      })

      // TODO(timneutkens): remove this
      const isServerComponent =
        isInsideAppDir && staticInfo.rsc !== RSC_MODULE_TYPES.client

      if (isMiddlewareFile(page)) {
        middlewareMatchers = staticInfo.middleware?.matchers ?? [
          { regexp: '.*', originalSource: '/:path*' },
        ]
      }

      const isInstrumentation =
        isInstrumentationHookFile(page) && pagesType === PAGE_TYPES.ROOT

      runDependingOnPageType({
        page,
        pageRuntime: staticInfo.runtime,
        pageType: pagesType,
        onClient: () => {
          if (isServerComponent || isInsideAppDir) {
            // We skip the initial entries for server component pages and let the
            // server compiler inject them instead.
          } else {
            client[clientBundlePath] = getClientEntry({
              absolutePagePath,
              page,
            })
          }
        },
        onServer: () => {
          if (pagesType === 'app' && appDir) {
            const matchedAppPaths = appPathsPerRoute[normalizeAppPath(page)]
            server[serverBundlePath] = getAppEntry({
              page,
              name: serverBundlePath,
              pagePath: absolutePagePath,
              appDir,
              appPaths: matchedAppPaths,
              pageExtensions,
              basePath: config.basePath,
              assetPrefix: config.assetPrefix,
              nextConfigOutput: config.output,
              preferredRegion: staticInfo.preferredRegion,
              middlewareConfig: encodeToBase64(staticInfo.middleware || {}),
              isGlobalNotFoundEnabled: config.experimental.globalNotFound
                ? true
                : undefined,
            })
          } else if (isInstrumentation) {
            server[serverBundlePath.replace('src/', '')] =
              getInstrumentationEntry({
                absolutePagePath,
                isEdgeServer: false,
                isDev: false,
              })
          } else if (isMiddlewareFile(page)) {
            server[serverBundlePath.replace('src/', '')] = getEdgeServerEntry({
              ...params,
              rootDir,
              absolutePagePath: absolutePagePath,
              bundlePath: clientBundlePath,
              isDev: false,
              isServerComponent,
              page,
              middleware: staticInfo?.middleware,
              pagesType,
              preferredRegion: staticInfo.preferredRegion,
              middlewareConfig: staticInfo.middleware,
            })
          } else if (isAPIRoute(page)) {
            server[serverBundlePath] = [
              getRouteLoaderEntry({
                kind: RouteKind.PAGES_API,
                page,
                absolutePagePath,
                preferredRegion: staticInfo.preferredRegion,
                middlewareConfig: staticInfo.middleware || {},
              }),
            ]
          } else if (
            !isMiddlewareFile(page) &&
            !isInternalComponent(absolutePagePath) &&
            !isNonRoutePagesPage(page)
          ) {
            server[serverBundlePath] = [
              getRouteLoaderEntry({
                kind: RouteKind.PAGES,
                page,
                pages,
                absolutePagePath,
                preferredRegion: staticInfo.preferredRegion,
                middlewareConfig: staticInfo.middleware ?? {},
              }),
            ]
          } else {
            server[serverBundlePath] = [absolutePagePath]
          }
        },
        onEdgeServer: () => {
          let appDirLoader: string = ''
          if (isInstrumentation) {
            edgeServer[serverBundlePath.replace('src/', '')] =
              getInstrumentationEntry({
                absolutePagePath,
                isEdgeServer: true,
                isDev: false,
              })
          } else {
            if (pagesType === 'app') {
              const matchedAppPaths = appPathsPerRoute[normalizeAppPath(page)]
              appDirLoader = getAppEntry({
                name: serverBundlePath,
                page,
                pagePath: absolutePagePath,
                appDir: appDir!,
                appPaths: matchedAppPaths,
                pageExtensions,
                basePath: config.basePath,
                assetPrefix: config.assetPrefix,
                nextConfigOutput: config.output,
                // This isn't used with edge as it needs to be set on the entry module, which will be the `edgeServerEntry` instead.
                // Still passing it here for consistency.
                preferredRegion: staticInfo.preferredRegion,
                middlewareConfig: Buffer.from(
                  JSON.stringify(staticInfo.middleware || {})
                ).toString('base64'),
                isGlobalNotFoundEnabled: config.experimental.globalNotFound
                  ? true
                  : undefined,
              }).import
            }
            edgeServer[serverBundlePath] = getEdgeServerEntry({
              ...params,
              rootDir,
              absolutePagePath: absolutePagePath,
              bundlePath: clientBundlePath,
              isDev: false,
              isServerComponent,
              page,
              middleware: staticInfo?.middleware,
              pagesType,
              appDirLoader,
              preferredRegion: staticInfo.preferredRegion,
              middlewareConfig: staticInfo.middleware,
            })
          }
        },
      })
    }

  const promises: Promise<void[]>[] = []

  if (appPaths) {
    const entryHandler = getEntryHandler(appPaths, PAGE_TYPES.APP)
    promises.push(Promise.all(Object.keys(appPaths).map(entryHandler)))
  }
  if (rootPaths) {
    promises.push(
      Promise.all(
        Object.keys(rootPaths).map(getEntryHandler(rootPaths, PAGE_TYPES.ROOT))
      )
    )
  }
  promises.push(
    Promise.all(
      Object.keys(pages).map(getEntryHandler(pages, PAGE_TYPES.PAGES))
    )
  )

  await Promise.all(promises)

  // Optimization: If there's only one instrumentation hook in edge compiler, which means there's no edge server entry.
  // We remove the edge instrumentation entry from edge compiler as it can be pure server side.
  if (edgeServer.instrumentation && Object.keys(edgeServer).length === 1) {
    delete edgeServer.instrumentation
  }

  return {
    client,
    server,
    edgeServer,
    middlewareMatchers,
  }
}

export function finalizeEntrypoint({
  name,
  compilerType,
  value,
  isServerComponent,
  hasAppDir,
}: {
  compilerType: CompilerNameValues
  name: string
  value: ObjectValue<webpack.EntryObject>
  isServerComponent?: boolean
  hasAppDir?: boolean
}): ObjectValue<webpack.EntryObject> {
  const entry =
    typeof value !== 'object' || Array.isArray(value)
      ? { import: value }
      : value

  const isApi = name.startsWith('pages/api/')
  const isInstrumentation = isInstrumentationHookFilename(name)

  switch (compilerType) {
    case COMPILER_NAMES.server: {
      const layer = isApi
        ? WEBPACK_LAYERS.apiNode
        : isInstrumentation
          ? WEBPACK_LAYERS.instrument
          : isServerComponent
            ? WEBPACK_LAYERS.reactServerComponents
            : name.startsWith('pages/')
              ? WEBPACK_LAYERS.pagesDirNode
              : undefined

      return {
        publicPath: isApi ? '' : undefined,
        runtime: isApi ? 'webpack-api-runtime' : 'webpack-runtime',
        layer,
        ...entry,
      }
    }
    case COMPILER_NAMES.edgeServer: {
      return {
        layer: isApi
          ? WEBPACK_LAYERS.apiEdge
          : isMiddlewareFilename(name) || isInstrumentation
            ? WEBPACK_LAYERS.middleware
            : name.startsWith('pages/')
              ? WEBPACK_LAYERS.pagesDirEdge
              : undefined,
        library: { name: ['_ENTRIES', `middleware_[name]`], type: 'assign' },
        runtime: EDGE_RUNTIME_WEBPACK,
        asyncChunks: false,
        ...entry,
      }
    }
    case COMPILER_NAMES.client: {
      const isAppLayer =
        hasAppDir &&
        (name === CLIENT_STATIC_FILES_RUNTIME_MAIN_APP ||
          name === APP_CLIENT_INTERNALS ||
          name.startsWith('app/'))

      if (
        // Client special cases
        name !== CLIENT_STATIC_FILES_RUNTIME_POLYFILLS &&
        name !== CLIENT_STATIC_FILES_RUNTIME_MAIN &&
        name !== CLIENT_STATIC_FILES_RUNTIME_MAIN_APP &&
        name !== CLIENT_STATIC_FILES_RUNTIME_AMP &&
        name !== CLIENT_STATIC_FILES_RUNTIME_REACT_REFRESH
      ) {
        if (isAppLayer) {
          return {
            dependOn: CLIENT_STATIC_FILES_RUNTIME_MAIN_APP,
            layer: WEBPACK_LAYERS.appPagesBrowser,
            ...entry,
          }
        }

        return {
          dependOn:
            name.startsWith('pages/') && name !== 'pages/_app'
              ? 'pages/_app'
              : CLIENT_STATIC_FILES_RUNTIME_MAIN,
          layer: WEBPACK_LAYERS.pagesDirBrowser,
          ...entry,
        }
      }

      if (isAppLayer) {
        return {
          layer: WEBPACK_LAYERS.appPagesBrowser,
          ...entry,
        }
      }

      return {
        layer: WEBPACK_LAYERS.pagesDirBrowser,
        ...entry,
      }
    }
    default:
      return compilerType satisfies never
  }
}