src/features/Post/lib/query/useCreatePost.tsx

import { useMutation, useQueryClient } from '@tanstack/react-query';
import { createPost } from '../../api/createPost';

export const useCreatePost = () => {
    const queryClient = useQueryClient();

    return useMutation({
        mutationFn: createPost,
        onSuccess: () => {
            queryClient.invalidateQueries({ queryKey: ['fetchPosts'] });
        },
    });
};