text: const { normalise } = require('../index.js')
  
  const normaliser = {
      name: name => {
          if (name.length < 10) {
              return [['Name too short']]
          }
  
          return [null, name.toUpperCase()]
      }
  }
  
  {
      const { name, error } = normalise(normaliser, { name: 'bad_user' })
      console.log(name, error)
      // error: { name: ['Name too short'] } 
      // name: undefined
  }
  
  {
      const { name, error } = normalise(normaliser, { name: 'a_very_good_user' })
      console.log(name, error)
      // error: undefined
      // name: A_very_good_user
  }
  