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diff --git a/web/search/message-search-state-provider.react.js b/web/search/message-search-state-provider.react.js
new file mode 100644
--- /dev/null
+++ b/web/search/message-search-state-provider.react.js
@@ -0,0 +1,67 @@
+// @flow
+
+import invariant from 'invariant';
+import * as React from 'react';
+
+type MessageSearchState = {
+ +getQuery: (threadID: string) => string,
+ +setQuery: (query: string, threadID: string) => void,
+ +clearQuery: (threadID: string) => void,
+};
+
+const MessageSearchContext: React.Context<?MessageSearchState> =
+ React.createContext<?MessageSearchState>(null);
+
+type Props = {
+ +children: React.Node,
+};
+
+function MessageSearchStateProvider(props: Props): React.Node {
+ const [queries, setQueries] = React.useState<{
+ [threadID: string]: string,
+ }>({});
+
+ const setQuery = React.useCallback(
+ (query: string, threadID: string) =>
+ setQueries(prevQueries => ({ ...prevQueries, [threadID]: query })),
+ [],
+ );
+
+ const clearQuery = React.useCallback(
+ (threadID: string) =>
+ setQueries(prevQueries => {
+ const { [threadID]: deleted, ...newState } = prevQueries;
+ return newState;
+ }),
+ [],
+ );
+
+ const getQuery = React.useCallback(
+ (threadID: string) => queries[threadID] ?? '',
+ [queries],
+ );
+
+ const state = React.useMemo(
+ () => ({
+ getQuery,
+ setQuery,
+ clearQuery,
+ }),
+ [getQuery, setQuery, clearQuery],
+ );
+
+ return (
+ <MessageSearchContext.Provider value={state}>
+ {props.children}
+ </MessageSearchContext.Provider>
+ );
+}
+
+function useMessageSearchContext(): MessageSearchState {
+ const context = React.useContext(MessageSearchContext);
+ invariant(context, 'MessageSearchContext not found');
+
+ return context;
+}
+
+export { MessageSearchStateProvider, useMessageSearchContext };

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