import { u } from 'unist-builder'
import { inspect } from 'unist-util-inspect'
import findAncestor from 'unist-util-ancestor'
const tree =
  u('root', [
    u('node', [
      u('leaf', 'leaf 0')
    ]),
    u('node', [
      u('node', [
        u('leaf', 'leaf 1'),
      ]),
      u('node', [
        u('leaf', 'leaf 2'),
        u('node', [
          u('leaf', 'leaf 3'),
        ])
      ])
    ]),
    u('leaf', 'leaf 4')
  ])
const nodesToFind = [{ value: 'leaf 1' }, { value: 'leaf 2' }]
console.log(inspect(findAncestor(tree, nodesToFind)))