x/lib/util.js

Apply HTML transformations using attributes

'use strict'

const parse5 = require('parse5')
const vinyl = require('vinyl')

function normalize (path) {
  return path.replace(/[\\\/]+/g, '/')
}

function * walkNodes (node) {
  if (node.childNodes) {
    yield * walkNodesUnchecked(node)
  }
}

function * walkNodesUnchecked (node) {
  for (let child of node.childNodes) {
    yield child
    if (child.childNodes) {
      yield * walkNodesUnchecked(child)
    }
  }
}

function getRootNode (node) {
  while (node.parentNode) {
    node = node.parentNode
  }
  return node
}

function isExternal (ref) {
  return /^(?:[a-zA-Z][a-zA-Z0-9+.-]*:(?:\/\/)?|\/\/)/.test(ref)
}

module.exports = {
  parse5,
  vinyl,
  normalize,
  walkNodes,
  getRootNode,
  isExternal
}