From e26d4a152fb41b0bdce24abb31141d7b9b4fdf15 Mon Sep 17 00:00:00 2001
From: curbengh <43627182+curbengh@users.noreply.github.com>
Date: Mon, 18 Nov 2019 22:59:22 +0000
Subject: [PATCH] fix: skip generate if no posts

---
 lib/generator.js |  5 +++++
 test/index.js    | 16 ++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/lib/generator.js b/lib/generator.js
index c38f001..0eb37bb 100644
--- a/lib/generator.js
+++ b/lib/generator.js
@@ -24,6 +24,11 @@ module.exports = function(locals) {
       return b.updated - a.updated;
     });
 
+  if (posts.length <= 0) {
+    config.sitemap.rel = false;
+    return;
+  }
+
   const xml = template(config).render({
     config,
     posts
diff --git a/test/index.js b/test/index.js
index 7ba8c85..51b31b1 100644
--- a/test/index.js
+++ b/test/index.js
@@ -79,6 +79,22 @@ describe('Sitemap generator', () => {
   });
 });
 
+it('No posts', () => {
+  const hexo = new Hexo(__dirname, { silent: true });
+  hexo.config.sitemap = {
+    path: 'sitemap.xml'
+  };
+  const Post = hexo.model('Post');
+  const generator = require('../lib/generator').bind(hexo);
+
+  return Post.insert([]).then(data => {
+    const locals = hexo.locals.toObject();
+    const result = typeof generator(locals);
+
+    result.should.eql('undefined');
+  });
+});
+
 describe('Rel-Sitemap', () => {
   const hexo = new Hexo();
   hexo.config.sitemap = {