index.js
function undo(nodes) {
  nodes.forEach(function (node) {
    var parent = node.parentNode
    unwrap(node)
    parent.normalize()
  })
}
function undo(nodes) {
  nodes.forEach(function (node) {
    var parent = node.parentNode
    unwrap(node)
    parent.normalize()
  })
}
function undo ( nodes ) { nodes . forEach ( function ( node ) { var parent = node . parentNode unwrap ( node ) parent . normalize ( ) } ) }
undo the effect of `wrapRangeText`, given a resulting array of wrapper `nodes`
undo the effect of wrapRangeText given a resulting array of wrapper nodes