fix(fusumarc): revert languages section

Author: hiroppy

packages/fusuma/src/configs/babelrc.js

@@ -1,6 +1,6 @@
 'use strict';
 
-function babelrc({ plugins = [], theme = 'default' } = {}) {
+function babelrc({ languages, plugins = [], theme = 'default' } = {}) {
   return {
     presets: [
       [
@@ -28,7 +28,7 @@ function babelrc({ plugins = [], theme = 'default' } = {}) {
       [
         'prismjs',
         {
-          languages: [],
+          languages,
           plugins,
           theme,
           css: true,

samples/debug/.fusumarc.yml

@@ -10,6 +10,11 @@ slide:
   targetBlank: true
   showIndex: true
   isVertical: false
+  code:
+    languages:
+      - javascript
+      - cpp
+      - python
 extends:
   js: main.js
 build: