web/src/lib/hooks/useGoPrev.ts

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

import { afterNavigate } from '$app/navigation';
import { base } from '$app/paths';
import { writable } from 'svelte/store';

export const useGoPrev = () => {
  const { subscribe, set } = writable(base.toString());

  afterNavigate(({ from }) => {
    set(from?.url?.pathname || base);
  });

  return { prevPage: { subscribe } };
};