From f332669ddd5437d632338fb9dbcdcca606958703 Mon Sep 17 00:00:00 2001
From: Sukka <isukkaw@gmail.com>
Date: Mon, 30 Dec 2019 21:03:22 +0800
Subject: [PATCH] refactor(hexo/index): use Set (#4013)

---
 lib/hexo/index.js | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lib/hexo/index.js b/lib/hexo/index.js
index a5c45bec4c..97a9566ef9 100644
--- a/lib/hexo/index.js
+++ b/lib/hexo/index.js
@@ -36,15 +36,13 @@ const stopWatcher = box => { if (box.isWatching()) box.unwatch(); };
 
 const routeCache = new WeakMap();
 
-const unique = array => array.filter((item, index, self) => self.indexOf(item) === index);
-
 const castArray = obj => { return Array.isArray(obj) ? obj : [obj]; };
 
 const createLoadThemeRoute = function(generatorResult, locals, ctx) {
   const { log, theme } = ctx;
   const { path, cache: useCache } = locals;
 
-  const layout = unique(castArray(generatorResult.layout));
+  const layout = [...new Set(castArray(generatorResult.layout))];
   const layoutLength = layout.length;
 
   // allways use cache in fragment_cache