documentation/node_modules/@docusaurus/theme-classic/lib/theme/TOCCollapsible/index.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
import React from 'react';
import clsx from 'clsx';
import {useCollapsible, Collapsible} from '@docusaurus/theme-common';
import TOCItems from '@theme/TOCItems';
import CollapseButton from '@theme/TOCCollapsible/CollapseButton';
import styles from './styles.module.css';
export default function TOCCollapsible({
  toc,
  className,
  minHeadingLevel,
  maxHeadingLevel,
}) {
  const {collapsed, toggleCollapsed} = useCollapsible({
    initialState: true,
  });
  return (
    <div
      className={clsx(
        styles.tocCollapsible,
        !collapsed && styles.tocCollapsibleExpanded,
        className,
      )}>
      <CollapseButton collapsed={collapsed} onClick={toggleCollapsed} />
      <Collapsible
        lazy
        className={styles.tocCollapsibleContent}
        collapsed={collapsed}>
        <TOCItems
          toc={toc}
          minHeadingLevel={minHeadingLevel}
          maxHeadingLevel={maxHeadingLevel}
        />
      </Collapsible>
    </div>
  );
}