change theme to buck

themes/buck/scripts/tags.js

@@ -0,0 +1,13 @@
+hexo.extend.helper.register("tags_of_year", function (year) {
+  const yearNumber = Number(year)
+  const tags = this.site.posts
+    .filter((post) => post.date.year() === yearNumber)
+    .map((x) => x.tags)
+    .reduce((p, c) => {
+      for (const t of c.toArray()) {
+        p.add(t)
+      }
+      return p
+    }, new Set())
+    return Array.from(tags);
+})