From 8b0e575f6423575c08e9a6748be41c888611d631 Mon Sep 17 00:00:00 2001
From: Hailey <me@haileyok.com>
Date: Wed, 6 Mar 2024 15:33:23 -0800
Subject: Adjust FlatList performance in main feeds (#3134)

* adjust flatlist perf settings

* calculate initial num to render based on screen height

* adjust window size

* don't react to screen height changes
---
 src/lib/hooks/useInitialNumToRender.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 src/lib/hooks/useInitialNumToRender.ts

(limited to 'src/lib/hooks/useInitialNumToRender.ts')

diff --git a/src/lib/hooks/useInitialNumToRender.ts b/src/lib/hooks/useInitialNumToRender.ts
new file mode 100644
index 000000000..942f0404a
--- /dev/null
+++ b/src/lib/hooks/useInitialNumToRender.ts
@@ -0,0 +1,11 @@
+import React from 'react'
+import {Dimensions} from 'react-native'
+
+const MIN_POST_HEIGHT = 100
+
+export function useInitialNumToRender(minItemHeight: number = MIN_POST_HEIGHT) {
+  return React.useMemo(() => {
+    const screenHeight = Dimensions.get('window').height
+    return Math.ceil(screenHeight / minItemHeight) + 1
+  }, [minItemHeight])
+}
-- 
cgit 1.4.1