From f919f031fe49fea3fa3c9f23880efdd59d6f89d9 Mon Sep 17 00:00:00 2001
From: jamos-tay <jamostay94@hotmail.com>
Date: Mon, 18 Mar 2019 19:52:22 +0800
Subject: [PATCH] Prevent plugins from modifying the page config

---
 src/Page.js | 10 +++++++---
 src/Site.js |  3 +--
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/Page.js b/src/Page.js
index ce03391cdf..4e567098a0 100644
--- a/src/Page.js
+++ b/src/Page.js
@@ -65,7 +65,6 @@ function Page(pageConfig) {
   this.layoutsAssetPath = pageConfig.layoutsAssetPath;
   this.rootPath = pageConfig.rootPath;
   this.enableSearch = pageConfig.enableSearch;
-  this.pageConfig = pageConfig;
   this.plugins = pageConfig.plugins;
   this.pluginsContext = pageConfig.pluginsContext;
   this.searchable = pageConfig.searchable;
@@ -803,11 +802,13 @@ Page.prototype.generate = function (builtFiles) {
  */
 Page.prototype.preRender = function (content) {
   let preRenderedContent = content;
+  const pageConfig = {
+  };
   Object.entries(this.plugins).forEach(([pluginName, plugin]) => {
     if (plugin.preRender) {
       preRenderedContent
         = plugin.preRender(preRenderedContent, this.pluginsContext[pluginName] || {},
-                           this.frontMatter, this.pageConfig);
+                           this.frontMatter, pageConfig);
     }
   });
   return preRenderedContent;
@@ -818,11 +819,14 @@ Page.prototype.preRender = function (content) {
  */
 Page.prototype.postRender = function (content) {
   let postRenderedContent = content;
+  const pageConfig = {
+    headingIndexingLevel: this.headingIndexingLevel,
+  };
   Object.entries(this.plugins).forEach(([pluginName, plugin]) => {
     if (plugin.postRender) {
       postRenderedContent
         = plugin.postRender(postRenderedContent, this.pluginsContext[pluginName] || {},
-                            this.frontMatter, this.pageConfig);
+                            this.frontMatter, pageConfig);
     }
   });
   return postRenderedContent;
diff --git a/src/Site.js b/src/Site.js
index 79db576c86..bb22f9b4ed 100644
--- a/src/Site.js
+++ b/src/Site.js
@@ -697,8 +697,7 @@ function findDefaultPlugins() {
   return walkSync(globPath, {
     directories: false,
     globs: [`${MARKBIND_PLUGIN_PREFIX}*.js`],
-  })
-    .map(file => path.parse(file).name);
+  }).map(file => path.parse(file).name);
 }
 
 /**