function similarityBestMatch(mainString, targetStrings) {
  let bestMatch
  const ratings = targetStrings.map(targetString => {
    const score = leven(mainString, targetString)

    const res = {
      target: targetString,
      rating: leven(mainString, targetString)
    }

    if (!bestMatch || score < bestMatch.rating) bestMatch = res

    return res
  })

  return {
    ratings,
    bestMatch
  }
}