async theme

lib/theme.js

@@ -1,8 +1,21 @@
 import cookie from 'react-cookies'
 import BLOG from '@/blog.config'
-import { ALL_THEME } from '@/themes'
 import { isBrowser, getQueryVariable } from './utils'
 
+/**
+ * 所有主题枚举
+ */
+export const ALL_THEME = [
+  'hexo',
+  'matery',
+  'next',
+  'medium',
+  'fukasawa',
+  'nobelium',
+  'example',
+  'simple'
+]
+
 /**
  * 初始化主题 , 优先级 query > cookies > systemPrefer
  * @param isDarkMode