Overleaf/services/web/frontend/js/features/outline/components/outline-list.js

import PropTypes from 'prop-types'
import classNames from 'classnames'
import OutlineItem from './outline-item'

function OutlineList({ outline, jumpToLine, isRoot, highlightedLine }) {
  const listClasses = classNames('outline-item-list', {
    'outline-item-list-root': isRoot,
  })
  return (
    <ul className={listClasses} role={isRoot ? 'tree' : 'group'}>
      {outline.map((outlineItem, idx) => {
        return (
          <OutlineItem
            key={`${outlineItem.level}-${idx}`}
            outlineItem={outlineItem}
            jumpToLine={jumpToLine}
            highlightedLine={highlightedLine}
          />
        )
      })}
    </ul>
  )
}

OutlineList.propTypes = {
  outline: PropTypes.array.isRequired,
  jumpToLine: PropTypes.func.isRequired,
  isRoot: PropTypes.bool,
  highlightedLine: PropTypes.number,
}

export default OutlineList