"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Tuple = exports.NEUTRAL = void 0;
exports.isTuple = isTuple;
exports.tuple = tuple;
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _toConsumableArray(r) { return _arrayWithoutHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _iterableToArray(r) { if ("undefined" != typeof Symbol && null != r[Symbol.iterator] || null != r["@@iterator"]) return Array.from(r); }
function _arrayWithoutHoles(r) { if (Array.isArray(r)) return _arrayLikeToArray(r); }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
/*
 * Parsec
 * https://github.com/d-plaindoux/parsec
 *
 * Copyright (c) 2015-2016 Didier Plaindoux
 * Licensed under the LGPL2 license.
 */

var NEUTRAL = exports.NEUTRAL = Symbol('MASALA_NEUTRAL');
var Tuple = exports.Tuple = /*#__PURE__*/function () {
  function Tuple(array) {
    _classCallCheck(this, Tuple);
    if (array === undefined) {
      array = [];
    }
    this.value = array;
  }
  return _createClass(Tuple, [{
    key: "at",
    value: function at(index) {
      return this.value[index];
    }
  }, {
    key: "array",
    value: function array() {
      return _toConsumableArray(this.value);
    }
  }, {
    key: "single",
    value: function single() {
      return this.value[0];
    }
  }, {
    key: "first",
    value: function first() {
      return this.value[0];
    }
  }, {
    key: "last",
    value: function last() {
      return this.value[this.size() - 1];
    }
  }, {
    key: "join",
    value: function join() {
      var j = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
      return this.value.join(j);
    }
  }, {
    key: "append",
    value: function append(element) {
      if (element === NEUTRAL) {
        return new Tuple(_toConsumableArray(this.value));
      }
      if (isTuple(element)) {
        return new Tuple([].concat(_toConsumableArray(this.value), _toConsumableArray(element.value)));
      }
      // single element
      return new Tuple([].concat(_toConsumableArray(this.value), [element]));
    }
  }, {
    key: "isEmpty",
    value: function isEmpty() {
      return this.size() === 0;
    }
  }, {
    key: "size",
    value: function size() {
      return this.value.length;
    }
  }]);
}();
function isTuple(object) {
  return object instanceof Tuple;
}
function tuple(array) {
  if (array === undefined) {
    return new Tuple([]);
  } else {
    return new Tuple(array);
  }
}
//# sourceMappingURL=tuple.js.map