add theme

themes/butterfly/scripts/events/init.js

@@ -0,0 +1,20 @@
+hexo.extend.filter.register('before_generate', () => {
+  // Get first two digits of the Hexo version number
+  const { version, log, locals } = hexo
+  const hexoVer = version.replace(/(^.*\..*)\..*/, '$1')
+
+  if (hexoVer < 5.3) {
+    log.error('Please update Hexo to V5.3.0 or higher!')
+    log.error('請把 Hexo 升級到 V5.3.0 或更高的版本！')
+    process.exit(-1)
+  }
+
+  if (locals.get) {
+    const data = locals.get('data')
+    if (data && data.butterfly) {
+      log.error("'butterfly.yml' is deprecated. Please use '_config.butterfly.yml'")
+      log.error("'butterfly.yml' 已經棄用，請使用 '_config.butterfly.yml'")
+      process.exit(-1)
+    }
+  }
+})