function getTargetUrl (from, to, url) {
  const { pathToRegexp } = require('path-to-regexp')
  const fromParams = []
  const re = pathToRegexp(from, fromParams)
  const fromMatches = re.exec(url)
  let toUrl = to // <--------- it should be 'url' if 'fromMatches' is undefined

  for (const [index, fromParam] of fromParams.entries()) {
    if (fromMatches && fromMatches[index + 1]) {
      fromParam.value = fromMatches[index + 1]
    }
  }

  /* replace named params */
  for (const fromParam of fromParams) {
    if (typeof fromParam.name === 'string') {
      if (fromParam.value) {
        toUrl = toUrl.replace(new RegExp(`:${fromParam.name}`, 'g'), fromParam.value)
      } else {
        toUrl = url
      }
    }
  }

  /* replace positional params */
  for (const fromParam of fromParams) {
    if (typeof fromParam.name !== 'string') {
      toUrl = url.replace(re, toUrl)
    }
  }

  return toUrl
}