interface RandomStringOptions {
  /**
   *define whether the output should be lowercase / uppercase only. (default: null)
   */
  capitalization?: 'lowercase' | 'uppercase'
  /**
   *define the character set for the string. (default: 'alphanumeric')
   *alphanumeric - [0-9 a-z A-Z]
   *alphabetic - [a-z A-Z]
   *numeric - [0-9]
   *hex - [0-9 a-f]
   */
  charset?: string
  /**
   *the length of the random string. (default: 32)
   */
  length?: number
  /**
   *prefix
   */
  prefix?: string
  /**
   *exclude poorly readable chars: 0OIl. (default: false)
   */
  readable?: boolean
}

export const : I.IO<boolean> = ...

export const random: I.IO<number> = () => ...

export const randomString = (o?:RandomStringOptions): I.IO<string> => () => ...