docusaurus/v1/lib/core/DocsSidebar.js

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

const React = require('react');
const fs = require('fs');
const Container = require('./Container.js');
const SideNav = require('./nav/SideNav.js');
const Metadata = require('../core/metadata.js');
const readCategories = require('../server/readCategories.js');

let languages;

if (fs.existsSync(`../server/languages.js`)) {
  languages = require(`../server/languages.js`);
} else {
  languages = [
    {
      enabled: true,
      name: 'English',
      tag: 'en',
    },
  ];
}

class DocsSidebar extends React.Component {
  render() {
    const sidebar = this.props.metadata.sidebar;
    const docsCategories = readCategories(sidebar, Metadata, languages);
    const categoryName = this.props.metadata.category;
    if (!categoryName) {
      return null;
    }
    return (
      <Container className="docsNavContainer" id="docsNav" wrapper={false}>
        <SideNav
          language={this.props.metadata.language}
          root={this.props.root}
          title={this.props.title}
          contents={docsCategories[this.props.metadata.language]}
          current={this.props.metadata}
        />
      </Container>
    );
  }
}

module.exports = DocsSidebar;