fix: .date.getTime() based sort

quartz/plugins/emitters/contentIndex.ts

@@ -6,7 +6,6 @@ import { FilePath, FullSlug, SimpleSlug, simplifySlug } from "../../util/path"
 import { QuartzEmitterPlugin } from "../types"
 import { toHtml } from "hast-util-to-html"
 import path from "path"
-import { byDateAndAlphabetical } from "../../components/PageList"
 
 export type ContentIndex = Map<FullSlug, ContentDetails>
 export type ContentDetails = {
@@ -60,7 +59,17 @@ function generateRSSFeed(cfg: GlobalConfiguration, idx: ContentIndex, limit?: nu
   </item>`
 
   const items = Array.from(idx)
-    .sort((a, b) => byDateAndAlphabetical(cfg)(a[1], b[1]))
+    .sort(([_, f1], [__, f2]) => {
+      if (f1.date && f2.date) {
+        return f2.date.getTime() - f1.date.getTime()
+      } else if (f1.date && !f2.date) {
+        return -1
+      } else if (!f1.date && f2.date) {
+        return 1
+      }
+
+      return f1.title.localeCompare(f2.title)
+    })
     .map(([slug, content]) => createURLEntry(simplifySlug(slug), content))
     .slice(0, limit ?? idx.size)
     .join("")