add theme

themes/butterfly/scripts/events/comment.js

@@ -0,0 +1,24 @@
+/**
+ * Capitalize the first letter of comment name
+ */
+
+hexo.extend.filter.register('before_generate', () => {
+  const themeConfig = hexo.theme.config
+  let { use } = themeConfig.comments
+  if (!use) return
+
+  // Make sure use is an array
+  use = Array.isArray(use) ? use : use.split(',')
+
+  // Capitalize the first letter of each comment name
+  use = use.map(item =>
+    item.trim().toLowerCase().replace(/\b[a-z]/g, s => s.toUpperCase())
+  )
+
+  // Disqus and Disqusjs conflict, only keep the first one
+  if (use.includes('Disqus') && use.includes('Disqusjs')) {
+    use = [use[0]]
+  }
+
+  themeConfig.comments.use = use
+})