let Identity = function(value) {
  this._val = value
};

Identity.from = function(value) {
  return new Identity(value)
};

Identity.prototype.get = function() {
  return this._val
};

Identity.prototype.toString = function() {
  return `Identity<${JSON.stringify(this.get())}>`;
};

let Failure = function(value) {
  this._val = value
};

Failure.from = function(value) {
  return new Failure(value)
};

Failure.prototype.get = function() {
  return this._val
};

Failure.prototype.toString = function() {
  return `Failure<${JSON.stringify(this.get())}>`;
};

export {Identity, Failure};