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	diff --git a/lib/shared/edit-messages-utils.js b/lib/shared/edit-messages-utils.js
	new file mode 100644
	--- /dev/null
	+++ b/lib/shared/edit-messages-utils.js
	@@ -0,0 +1,39 @@
	+// @flow
	+
	+import { threadHasPermission } from './thread-utils.js';
	+import { messageTypes } from '../types/message-types.js';
	+import type {
	+ RobotextMessageInfo,
	+ ComposableMessageInfo,
	+} from '../types/message-types.js';
	+import { threadPermissions, type ThreadInfo } from '../types/thread-types.js';
	+import { useSelector } from '../utils/redux-utils.js';
	+
	+function useCanEditMessage(
	+ threadInfo: ThreadInfo,
	+ targetMessageInfo: ComposableMessageInfo \| RobotextMessageInfo,
	+): boolean {
	+ const currentUserInfo = useSelector(state => state.currentUserInfo);
	+
	+ if (targetMessageInfo.type !== messageTypes.TEXT) {
	+ return false;
	+ }
	+
	+ if (!currentUserInfo \|\| !currentUserInfo.id) {
	+ return false;
	+ }
	+
	+ const currentUserId = currentUserInfo.id;
	+ const targetMessageCreatorId = targetMessageInfo.creator.id;
	+ if (currentUserId !== targetMessageCreatorId) {
	+ return false;
	+ }
	+
	+ const hasPermission = threadHasPermission(
	+ threadInfo,
	+ threadPermissions.EDIT_MESSAGE,
	+ );
	+ return hasPermission;
	+}
	+
	+export { useCanEditMessage };