@andrwj/fp/semigroup.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = exports.Pair = exports.Product = exports.Sum = exports.Min = exports.Max = exports.All = exports.Any = void 0;

var Any = function Any(x) {
  return {
    x: x,
    concat: function concat(_ref) {
      var y = _ref.x;
      return Any(x || y);
    }
  };
};

exports.Any = Any;

Any.empty = function () {
  return Any(false);
};

var All = function All(x) {
  return {
    x: x,
    concat: function concat(_ref2) {
      var y = _ref2.x;
      return Any(x && y);
    }
  };
};

exports.All = All;

All.empty = function () {
  return All(true);
};

var Max = function Max(x) {
  return {
    x: x,
    concat: function concat(_ref3) {
      var y = _ref3.x;
      return Max(x > y ? x : y);
    }
  };
};

exports.Max = Max;

Max.empty = function () {
  return Max(-Infinity);
};

var Min = function Min(x) {
  return {
    x: x,
    concat: function concat(_ref4) {
      var y = _ref4.x;
      return Min(x < y ? x : y);
    }
  };
};

exports.Min = Min;

Min.empty = function () {
  return Min(Infinity);
};

var Sum = function Sum(x) {
  return {
    x: x,
    concat: function concat(_ref5) {
      var y = _ref5.x;
      return Sum(x + y);
    }
  };
};

exports.Sum = Sum;

Sum.empty = function () {
  return Sum(0);
};

var Product = function Product(x) {
  return {
    x: x,
    concat: function concat(_ref6) {
      var y = _ref6.x;
      return Sum(x * y);
    }
  };
};

exports.Product = Product;

Product.empty = function () {
  return Product(1);
}; // export Right = (x) =>
//   ({
//     map: (f) => Right(f(x)),
//     fold: (f, g) => g(x),
//     concat: (o) =>
//       o.fold(e => Left(e),
//              r => Right(x.concat(r)))
//   });
// export Left = (x) =>
//   ({
//     map: (f) => Left(x),
//     fold: (f, g) => f(x),
//     concat: (o) => Left(x)
//   });


var Pair = function Pair(x, y) {
  return {
    x: x,
    y: y,
    concat: function concat(_ref7) {
      var x1 = _ref7.x,
          y1 = _ref7.y;
      return Pair(x.concat(x1), y.concat(y1));
    }
  };
}; // const stats = List.of(
//   {page: 'home', view: 40},
//   {page: 'About', view: 10},
//   {page: 'Blog', view: 4},
// )
// stats.foldMap(x => Either.fromNullable(x.views).map(Sum), Right(Sum(0))); //Right(Sum(54))


exports.Pair = Pair;
var _default = {};
exports["default"] = _default;