Function post

lib/index.js:313–410

* Process the result from unified some more. * * @param {Nodes} tree * Tree. * @param {Readonly } options * Props. * @returns {ReactElement} * React element.

(tree, options)

 *   React element.
 */
function post(tree, options) {
  const allowedElements = options.allowedElements
  const allowElement = options.allowElement
  const components = options.components
  const disallowedElements = options.disallowedElements
  const skipHtml = options.skipHtml
  const unwrapDisallowed = options.unwrapDisallowed
  const urlTransform = options.urlTransform || defaultUrlTransform

  for (const deprecation of deprecations) {
    if (Object.hasOwn(options, deprecation.from)) {
      unreachable(
        'Unexpected `' +
          deprecation.from +
          '` prop, ' +
          (deprecation.to
            ? 'use `' + deprecation.to + '` instead'
            : 'remove it') +
          ' (see <' +
          changelog +
          '#' +
          deprecation.id +
          '> for more info)'
      )
    }
  }

  if (allowedElements && disallowedElements) {
    unreachable(
      'Unexpected combined `allowedElements` and `disallowedElements`, expected one or the other'
    )
  }

  visit(tree, transform)

  return toJsxRuntime(tree, {
    Fragment,
    components,
    ignoreInvalidStyle: true,
    jsx,
    jsxs,
    passKeys: true,
    passNode: true
  })

  /** @type {BuildVisitor<Root>} */
  function transform(node, index, parent) {
    if (node.type === 'raw' && parent && typeof index === 'number') {
      if (skipHtml) {
        parent.children.splice(index, 1)
      } else {
        parent.children[index] = {type: 'text', value: node.value}
      }

      return index
    }

    if (node.type === 'element') {