Function removeChildFromParentInCache

site/src/api/queries/chats.ts:220–238

(
	queryClient: QueryClient,
	childId: string,
)

 * parent) and when a `deleted` pubsub event arrives for a child chat.
 */
export const removeChildFromParentInCache = (
	queryClient: QueryClient,
	childId: string,
) => {
	let found = false;
	updateInfiniteChatsCache(queryClient, (chats) => {
		let changed = false;
		const next = chats.map((c) => {
			if (!c.children?.length) return c;
			const filtered = c.children.filter((ch) => ch.id !== childId);
			if (filtered.length === c.children.length) return c;
			found = true;
			changed = true;
			return { ...c, children: filtered };
		});
		return changed ? next : chats;
	});
	return found;
};

const parseUpdatedAtInstant = (updatedAt: string) => {
	const match = updatedAt.match(/^(.*?)(?:\.(\d+))?(Z|[+-]\d\d:\d\d)$/);