function MONAD() {
  let prototype = Object.create(null)
  
  function unit(value) {
    let monad = Object.create(prototype)
    monad.bind = function (func, args) {
      return func(value, ...args)
    }
    return monad 
  }
  
  unit.lift = function (name, func) {
    prototype[name] = function (...args) {
      return unit(this.bind(func, args))
    }
    return unit
  }
  
  return unit
}

let ajax = MONAD().lift('log', console.log)
let monad = ajax("Hello world")
monad.log()