druid/node_modules/mdast-util-to-markdown/lib/util/check-list-item-indent.js

module.exports = checkListItemIndent

function checkListItemIndent(context) {
  var style = context.options.listItemIndent || 'tab'

  if (style === 1 || style === '1') {
    return 'one'
  }

  if (style !== 'tab' && style !== 'one' && style !== 'mixed') {
    throw new Error(
      'Cannot serialize items with `' +
        style +
        '` for `options.listItemIndent`, expected `tab`, `one`, or `mixed`'
    )
  }

  return style
}