Get config from one location (#3801)

* Remove obsolete clean.js

* Remove unused root-module-relative-path

* Single source of configuration

* Fix next export

server/build/clean.js

-import { resolve } from 'path'
-import del from 'del'
-import getConfig from '../config'
-
-export default function clean (dir) {
-  const dist = getConfig(dir).distDir
-  return del(resolve(dir, dist), { force: true })
-}

server/build/root-module-relative-path.js

-// Next.js needs to use module.resolve to generate paths to modules it includes,
-// but those paths need to be relative to something so that they're portable
-// across directories and machines.
-//
-// This function returns paths relative to the top-level 'node_modules'
-// directory found in the path. If none is found, returns the complete path.
-
-import { sep } from 'path'
-
-const RELATIVE_START = `node_modules${sep}`
-
-// Pass in the module's `require` object since it's module-specific.
-export default (moduleRequire) => (path) => {
-  // package.json removed because babel-runtime is resolved as
-  // "babel-runtime/package"
-  const absolutePath = moduleRequire.resolve(path)
-    .replace(/[\\/]package\.json$/, '')
-
-  const relativeStartIndex = absolutePath.indexOf(RELATIVE_START)
-
-  if (relativeStartIndex === -1) {
-    return absolutePath
-  }
-
-  return absolutePath.substring(relativeStartIndex + RELATIVE_START.length)
-}

server/export.js

@@ -85,6 +85,7 @@ export default async function (dir, options, configuration) {
   // Start the rendering process
   const renderOpts = {
     dir,
+    dist: config.distDir,
     buildStats,
     buildId,
     nextExport: true,

server/hot-reloader.js

 import { join, relative, sep } from 'path'
 import WebpackDevMiddleware from 'webpack-dev-middleware'
 import WebpackHotMiddleware from 'webpack-hot-middleware'
+import del from 'del'
 import onDemandEntryHandler from './on-demand-entry-handler'
 import webpack from 'webpack'
 import getBaseWebpackConfig from './build/webpack'
-import clean from './build/clean'
-import getConfig from './config'
 import UUID from 'uuid'
 import {
   IS_BUNDLED_PAGE,
@@ -13,7 +12,7 @@ import {
 } from './utils'
 
 export default class HotReloader {
-  constructor (dir, { quiet, conf } = {}) {
+  constructor (dir, { quiet, config } = {}) {
     this.dir = dir
     this.quiet = quiet
     this.middlewares = []
@@ -32,7 +31,7 @@ export default class HotReloader {
     // it should be the same value.
     this.buildId = UUID.v4()
 
-    this.config = getConfig(dir, conf)
+    this.config = config
   }
 
   async run (req, res) {
@@ -55,8 +54,12 @@ export default class HotReloader {
     }
   }
 
+  async clean () {
+    return del(join(this.dir, this.config.distDir), { force: true })
+  }
+
   async start () {
-    await clean(this.dir)
+    await this.clean()
 
     const configs = await Promise.all([
       getBaseWebpackConfig(this.dir, { dev: true, isServer: false, config: this.config }),
@@ -86,7 +89,7 @@ export default class HotReloader {
   async reload () {
     this.stats = null
 
-    await clean(this.dir)
+    await this.clean()
 
     const configs = await Promise.all([
       getBaseWebpackConfig(this.dir, { dev: true, isServer: false, config: this.config }),

server/index.js

@@ -32,11 +32,12 @@ export default class Server {
     this.dev = dev
     this.quiet = quiet
     this.router = new Router()
-    this.hotReloader = dev ? this.getHotReloader(this.dir, { quiet, conf }) : null
     this.http = null
     this.config = getConfig(this.dir, conf)
     this.dist = this.config.distDir
 
+    this.hotReloader = dev ? this.getHotReloader(this.dir, { quiet, config: this.config }) : null
+
     if (dev) {
       updateNotifier(pkg, 'next')
     }
@@ -51,6 +52,7 @@ export default class Server {
       dev,
       staticMarkup,
       dir: this.dir,
+      dist: this.dist,
       hotReloader: this.hotReloader,
       buildStats: this.buildStats,
       buildId: this.buildId,
@@ -183,8 +185,7 @@ export default class Server {
           }
         }
 
-        const dist = getConfig(this.dir).distDir
-        const path = join(this.dir, dist, 'bundles', 'pages', `${page}.js.map`)
+        const path = join(this.dir, this.dist, 'bundles', 'pages', `${page}.js.map`)
         await serveStatic(req, res, path)
       },
 

server/render.js

@@ -5,7 +5,6 @@ import send from 'send'
 import generateETag from 'etag'
 import fresh from 'fresh'
 import requirePage from './require'
-import getConfig from './config'
 import { Router } from '../lib/router'
 import { loadGetInitialProps, isResSent } from '../lib/utils'
 import { getAvailableChunks } from './utils'
@@ -41,6 +40,7 @@ async function doRender (req, res, pathname, query, {
   hotReloader,
   assetPrefix,
   availableChunks,
+  dist,
   dir = process.cwd(),
   dev = false,
   staticMarkup = false,
@@ -52,8 +52,6 @@ async function doRender (req, res, pathname, query, {
     await ensurePage(page, { dir, hotReloader })
   }
 
-  const dist = getConfig(dir).distDir
-
   const documentPath = join(dir, dist, 'dist', 'bundles', 'pages', '_document')
 
   let Component = requirePage(page, {dir, dist})