Delete some dead code and do some refactoring

src/screens/Profile/Sections/Feed.tsx

@@ -0,0 +1,88 @@
+import React from 'react'
+import {View} from 'react-native'
+import {msg, Trans} from '@lingui/macro'
+import {useLingui} from '@lingui/react'
+import {ListRef} from 'view/com/util/List'
+import {Feed} from 'view/com/posts/Feed'
+import {EmptyState} from 'view/com/util/EmptyState'
+import {FeedDescriptor} from '#/state/queries/post-feed'
+import {RQKEY as FEED_RQKEY} from '#/state/queries/post-feed'
+import {LoadLatestBtn} from 'view/com/util/load-latest/LoadLatestBtn'
+import {useQueryClient} from '@tanstack/react-query'
+import {truncateAndInvalidate} from '#/state/queries/util'
+import {Text} from '#/view/com/util/text/Text'
+import {usePalette} from 'lib/hooks/usePalette'
+import {isNative} from '#/platform/detection'
+import {SectionRef} from './types'
+
+interface FeedSectionProps {
+  feed: FeedDescriptor
+  headerHeight: number
+  isFocused: boolean
+  scrollElRef: ListRef
+  ignoreFilterFor?: string
+}
+export const ProfileFeedSection = React.forwardRef<
+  SectionRef,
+  FeedSectionProps
+>(function FeedSectionImpl(
+  {feed, headerHeight, isFocused, scrollElRef, ignoreFilterFor},
+  ref,
+) {
+  const {_} = useLingui()
+  const queryClient = useQueryClient()
+  const [hasNew, setHasNew] = React.useState(false)
+  const [isScrolledDown, setIsScrolledDown] = React.useState(false)
+
+  const onScrollToTop = React.useCallback(() => {
+    scrollElRef.current?.scrollToOffset({
+      animated: isNative,
+      offset: -headerHeight,
+    })
+    truncateAndInvalidate(queryClient, FEED_RQKEY(feed))
+    setHasNew(false)
+  }, [scrollElRef, headerHeight, queryClient, feed, setHasNew])
+  React.useImperativeHandle(ref, () => ({
+    scrollToTop: onScrollToTop,
+  }))
+
+  const renderPostsEmpty = React.useCallback(() => {
+    return <EmptyState icon="feed" message={_(msg`This feed is empty!`)} />
+  }, [_])
+
+  return (
+    <View>
+      <Feed
+        testID="postsFeed"
+        enabled={isFocused}
+        feed={feed}
+        scrollElRef={scrollElRef}
+        onHasNew={setHasNew}
+        onScrolledDownChange={setIsScrolledDown}
+        renderEmptyState={renderPostsEmpty}
+        headerOffset={headerHeight}
+        renderEndOfFeed={ProfileEndOfFeed}
+        ignoreFilterFor={ignoreFilterFor}
+      />
+      {(isScrolledDown || hasNew) && (
+        <LoadLatestBtn
+          onPress={onScrollToTop}
+          label={_(msg`Load new posts`)}
+          showIndicator={hasNew}
+        />
+      )}
+    </View>
+  )
+})
+
+function ProfileEndOfFeed() {
+  const pal = usePalette('default')
+
+  return (
+    <View style={[pal.border, {paddingTop: 32, borderTopWidth: 1}]}>
+      <Text style={[pal.textLight, pal.border, {textAlign: 'center'}]}>
+        <Trans>End of feed</Trans>
+      </Text>
+    </View>
+  )
+}

src/screens/Profile/Sections/types.ts

@@ -0,0 +1,3 @@
+export interface SectionRef {
+  scrollToTop: () => void
+}