From 2dd8471c15e48d2738653f5e484f238aec441ad0 Mon Sep 17 00:00:00 2001
From: jocs <ransixi@gmail.com>
Date: Sun, 3 Nov 2019 17:41:34 +0800
Subject: [PATCH] Fix: unexpected load all languages

---
 src/muya/lib/contentState/codeBlockCtrl.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/muya/lib/contentState/codeBlockCtrl.js b/src/muya/lib/contentState/codeBlockCtrl.js
index 237db711..77b3cf16 100644
--- a/src/muya/lib/contentState/codeBlockCtrl.js
+++ b/src/muya/lib/contentState/codeBlockCtrl.js
@@ -44,7 +44,10 @@ const codeBlockCtrl = ContentState => {
    * @param lang Language identifier
    */
   ContentState.prototype.updateCodeLanguage = function (block, lang) {
-    loadLanguage(lang)
+    if (lang && typeof lang === 'string') {
+      loadLanguage(lang)
+    }
+
     if (block.functionType === 'languageInput') {
       const preBlock = this.getParent(block)
       const nextSibling = this.getNextSibling(block)
@@ -101,7 +104,9 @@ const codeBlockCtrl = ContentState => {
         functionType: 'languageInput'
       })
 
-      loadLanguage(language)
+      if (language) {
+        loadLanguage(language)
+      }
 
       block.type = 'pre'
       block.functionType = 'fencecode'