module.exports = (characters: string | string[], callback: any, maxLength: number = -1) => {
  let i: number = 1

  if (typeof characters == "string") characters = characters.split("") // If input: typeof string => split into array

  // Sort characters
  characters.sort()
  characters = characters.filter(function(value: string, index: number, arr: string[]) {
    if (index < 1) {
      return true
    } else {
      return value != arr[index - 1]
    }
  })

  characters = [""].concat(characters) // Cleanup

  const getBruteforceString = (idx: number) => {
    let charBasedString = ""
    let mod

    while (idx > 0) {
      mod = idx % characters.length
      charBasedString = characters[mod] + charBasedString
      idx = (idx - mod) / characters.length
    }
    return charBasedString
  }

  while (i > 0) {
    let result = callback(getBruteforceString(i))

    if (result) break
    if (maxLength >= 1 && getBruteforceString(i).length > maxLength) break

    i++
  }
}