Stop feed pagination after we get dupes back

src/state/queries/feed.ts

@@ -246,13 +246,19 @@ export function useGetPopularFeedsQuery(options?: GetPopularFeedsOptions) {
       (
         data: InfiniteData<AppBskyUnspeccedGetPopularFeedGenerators.OutputSchema>,
       ) => {
+        const seen = new Set()
         const {savedFeeds, hasSession: hasSessionInner} = selectArgs
         return {
           ...data,
           pages: data.pages.map(page => {
-            return {
+            let __tempHasDuplicatesStopPagination__ = false
-              ...page,
+
-              feeds: page.feeds.filter(feed => {
+            const feeds = page.feeds.filter(feed => {
+              if (seen.has(feed.uri)) {
+                __tempHasDuplicatesStopPagination__ = true
+                return false
+              }
+              seen.add(feed.uri)
               if (
                 !hasSessionInner &&
                 KNOWN_AUTHED_ONLY_FEEDS.includes(feed.uri)
@@ -265,7 +271,14 @@ export function useGetPopularFeedsQuery(options?: GetPopularFeedsOptions) {
                 }),
               )
               return !alreadySaved
-              }),
+            })
+
+            return {
+              ...page,
+              cursor: __tempHasDuplicatesStopPagination__
+                ? undefined
+                : page.cursor,
+              feeds,
             }
           }),
         }