From 99d7177d9089f77c3c7d1e3d0e79df74d6be0357 Mon Sep 17 00:00:00 2001
From: Clark Du <clark.duxin@gmail.com>
Date: Tue, 5 Dec 2017 03:52:50 +0800
Subject: [PATCH] feat(build): add build.includeConfig to embed nuxt.config in
 dist after building (#2313)

* feat(build): add build.includeConfig to embed nuxt.config in dist after building

* refactor: remove build.includeConfig and Options.safeKeys
---
 lib/builder/builder.js |  9 +++++++++
 lib/common/options.js  | 16 ++++++++++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/lib/builder/builder.js b/lib/builder/builder.js
index d1ad08d6a0..9b42142c30 100644
--- a/lib/builder/builder.js
+++ b/lib/builder/builder.js
@@ -17,6 +17,7 @@ import serverWebpackConfig from './webpack/server.config.js'
 import dllWebpackConfig from './webpack/dll.config.js'
 import vueLoaderConfig from './webpack/vue-loader.config'
 import styleLoader from './webpack/style-loader'
+import { Options } from 'common'
 
 const debug = Debug('nuxt:build')
 debug.color = 2 // Force green color
@@ -62,6 +63,8 @@ export default class Builder {
     // Stop watching on nuxt.close()
     if (this.options.dev) {
       this.nuxt.hook('close', () => this.unwatch())
+    } else {
+      this.nuxt.hook('build:done', () => this.generateConfig())
     }
   }
 
@@ -559,6 +562,12 @@ export default class Builder {
     // Stop webpack middleware
     await this.webpackDevMiddleware.close()
   }
+
+  async generateConfig() {
+    const config = resolve(this.options.buildDir, 'build.config.js')
+    const options = _.omit(this.options, Options.unsafeKeys)
+    await writeFile(config, `module.exports = ${JSON.stringify(options, null, '  ')}`, 'utf8')
+  }
 }
 
 const STATUS = {
diff --git a/lib/common/options.js b/lib/common/options.js
index 34e7b3e34a..95bfcff16b 100755
--- a/lib/common/options.js
+++ b/lib/common/options.js
@@ -32,12 +32,19 @@ Options.from = function (_options) {
     options.layoutTransition = { name: options.layoutTransition }
   }
 
+  const hasValue = v => typeof v === 'string' && v
+  options.rootDir = hasValue(options.rootDir) ? options.rootDir : process.cwd()
+
+  // Apply defaults by ${buildDir}/dist/build.config.js
+  const buildDir = options.buildDir || Options.defaults.buildDir
+  const buildConfig = resolve(options.rootDir, buildDir, 'build.config.js')
+  if (existsSync(buildConfig)) {
+    _.defaultsDeep(options, require(buildConfig))
+  }
   // Apply defaults
   _.defaultsDeep(options, Options.defaults)
 
   // Resolve dirs
-  const hasValue = v => typeof v === 'string' && v
-  options.rootDir = hasValue(options.rootDir) ? options.rootDir : process.cwd()
   options.srcDir = hasValue(options.srcDir) ? resolve(options.rootDir, options.srcDir) : options.rootDir
   options.buildDir = resolve(options.rootDir, options.buildDir)
   options.cacheDir = resolve(options.rootDir, options.cacheDir)
@@ -185,6 +192,11 @@ Options.modes = {
   }
 }
 
+Options.unsafeKeys = [
+  'rootDir', 'srcDir', 'buildDir', 'modulesDir', 'cacheDir', 'nuxtDir',
+  'nuxtAppDir', 'build', 'generate', 'router.routes', 'appTemplatePath'
+]
+
 Options.defaults = {
   mode: 'universal',
   dev: process.env.NODE_ENV !== 'production',