'use strict'

var modifyChildren = require('unist-util-modify-children')

module.exports = modifyChildren(makeFinalWhiteSpaceSiblings)

// Move white space ending a paragraph up, so they are the siblings of
// paragraphs.
function makeFinalWhiteSpaceSiblings(child, index, parent) {
  var children = child.children
  var prev

  if (
    children &&
    children.length !== 0 &&
    children[children.length - 1].type === 'WhiteSpaceNode'
  ) {
    parent.children.splice(index + 1, 0, child.children.pop())
    prev = children[children.length - 1]

    if (prev && prev.position && child.position) {
      child.position.end = prev.position.end
    }

    // Next, iterate over the current node again.
    return index
  }
}