docusaurus/lib/core/DocsSidebar.js

const Metadata = require('./metadata.js');
const React = require('react');
const Container = require('./Container.js');
const SideNav = require('./nav/SideNav.js');
const siteConfig = require(process.cwd() + '/siteConfig.js');

class DocsSidebar extends React.Component {
  render() {
    let layout = this.props.metadata.layout;
    let docsCategories = require('./' + layout + 'Categories.js');
    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>
    );
  }
}

DocsSidebar.propTypes = {
  layout: React.PropTypes.string,
  root: React.PropTypes.string,
  title: React.PropTypes.string,
};

DocsSidebar.defaultProps = siteConfig.docsSidebarDefaults;

module.exports = DocsSidebar;