diff --git a/lib/hooks/search-sidebars.js b/lib/hooks/search-sidebars.js
new file mode 100644
--- /dev/null
+++ b/lib/hooks/search-sidebars.js
@@ -0,0 +1,47 @@
+// @flow
+
+import * as React from 'react';
+
+import { sidebarInfoSelector } from '../selectors/thread-selectors';
+import type { SetState } from '../types/hook-types';
+import type { SidebarInfo, ThreadInfo } from '../types/thread-types';
+import { useSelector } from '../utils/redux-utils';
+
+type SidebarSearchState = {
+  +text: string,
+  +results: $ReadOnlySet<string>,
+};
+
+function useSearchSidebars(
+  threadInfo: ThreadInfo,
+): {
+  listData: $ReadOnlyArray<SidebarInfo>,
+  searchState: SidebarSearchState,
+  setSearchState: SetState<SidebarSearchState>,
+} {
+  const [searchState, setSearchState] = React.useState({
+    text: '',
+    results: new Set<string>(),
+  });
+
+  const sidebarInfos = useSelector(
+    state => sidebarInfoSelector(state)[threadInfo.id] ?? [],
+  );
+
+  const listData = React.useMemo(() => {
+    if (!searchState.text) {
+      return sidebarInfos;
+    }
+    return sidebarInfos.filter(sidebarInfo =>
+      searchState.results.has(sidebarInfo.threadInfo.id),
+    );
+  }, [sidebarInfos, searchState]);
+
+  return React.useMemo(() => ({ listData, searchState, setSearchState }), [
+    listData,
+    setSearchState,
+    searchState,
+  ]);
+}
+
+export { useSearchSidebars };
diff --git a/native/chat/sidebar-list-modal.react.js b/native/chat/sidebar-list-modal.react.js
--- a/native/chat/sidebar-list-modal.react.js
+++ b/native/chat/sidebar-list-modal.react.js
@@ -3,6 +3,7 @@
 import * as React from 'react';
 import { TextInput, FlatList, StyleSheet } from 'react-native';
 
+import { useSearchSidebars } from 'lib/hooks/search-sidebars';
 import { sidebarInfoSelector } from 'lib/selectors/thread-selectors';
 import SearchIndex from 'lib/shared/search-index';
 import { threadSearchText } from 'lib/shared/thread-utils';
@@ -35,24 +36,13 @@
 };
 function SidebarListModal(props: Props): React.Node {
   const threadID = props.route.params.threadInfo.id;
+  const { listData, searchState, setSearchState } = useSearchSidebars(
+    props.route.params.threadInfo,
+  );
   const sidebarInfos = useSelector(
     state => sidebarInfoSelector(state)[threadID] ?? [],
   );
 
-  const [searchState, setSearchState] = React.useState({
-    text: '',
-    results: new Set<string>(),
-  });
-
-  const listData = React.useMemo(() => {
-    if (!searchState.text) {
-      return sidebarInfos;
-    }
-    return sidebarInfos.filter(({ threadInfo }) =>
-      searchState.results.has(threadInfo.id),
-    );
-  }, [sidebarInfos, searchState]);
-
   const userInfos = useSelector(state => state.userStore.userInfos);
   const viewerID = useSelector(
     state => state.currentUserInfo && state.currentUserInfo.id,
@@ -73,7 +63,7 @@
       ...curState,
       results: new Set(searchIndex.getSearchResults(curState.text)),
     }));
-  }, [searchIndex]);
+  }, [searchIndex, setSearchState]);
 
   const onChangeSearchText = React.useCallback(
     (searchText: string) =>
@@ -81,7 +71,7 @@
         text: searchText,
         results: new Set(searchIndex.getSearchResults(searchText)),
       }),
-    [searchIndex],
+    [searchIndex, setSearchState],
   );
 
   const searchTextInputRef = React.useRef();
@@ -111,7 +101,7 @@
       }
       navigateToThread({ threadInfo });
     },
-    [navigateToThread],
+    [navigateToThread, setSearchState],
   );
 
   const renderItem = React.useCallback(
diff --git a/web/modals/chat/sidebar-list-modal.react.js b/web/modals/chat/sidebar-list-modal.react.js
--- a/web/modals/chat/sidebar-list-modal.react.js
+++ b/web/modals/chat/sidebar-list-modal.react.js
@@ -5,6 +5,7 @@
 import classNames from 'classnames';
 import * as React from 'react';
 
+import { useSearchSidebars } from 'lib/hooks/search-sidebars';
 import { sidebarInfoSelector } from 'lib/selectors/thread-selectors';
 import SearchIndex from 'lib/shared/search-index';
 import { threadSearchText } from 'lib/shared/thread-utils';
@@ -25,10 +26,9 @@
 
 function SidebarListModal(props: Props): React.Node {
   const { threadInfo } = props;
-  const [searchState, setSearchState] = React.useState({
-    text: '',
-    results: new Set<string>(),
-  });
+  const { listData, searchState, setSearchState } = useSearchSidebars(
+    threadInfo,
+  );
   const { popModal } = useModalContext();
 
   const sidebarInfos = useSelector(
@@ -36,15 +36,6 @@
   );
   const userInfos = useSelector(state => state.userStore.userInfos);
 
-  const listData = React.useMemo(() => {
-    if (!searchState.text) {
-      return sidebarInfos;
-    }
-    return sidebarInfos.filter(sidebarInfo =>
-      searchState.results.has(sidebarInfo.threadInfo.id),
-    );
-  }, [sidebarInfos, searchState]);
-
   const sidebars = React.useMemo(
     () =>
       listData.map(item => (
@@ -82,7 +73,7 @@
       ...curState,
       results: new Set(searchIndex.getSearchResults(curState.text)),
     }));
-  }, [searchIndex]);
+  }, [searchIndex, setSearchState]);
 
   const onChangeSearchText = React.useCallback(
     (event: SyntheticEvent<HTMLInputElement>) => {
@@ -92,15 +83,15 @@
         results: new Set(searchIndex.getSearchResults(searchText)),
       });
     },
-    [searchIndex],
+    [searchIndex, setSearchState],
   );
 
   const clearQuery = React.useCallback(
     (event: SyntheticEvent<HTMLAnchorElement>) => {
       event.preventDefault();
-      setSearchState({ text: '', results: [] });
+      setSearchState({ text: '', results: new Set() });
     },
-    [],
+    [setSearchState],
   );
 
   let clearQueryButton = null;