"use strict";

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); }
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.bindInConstructor = exports.bind = void 0;
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); }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
function _createSuper(t) { var r = _isNativeReflectConstruct(); return function () { var e, o = _getPrototypeOf(t); if (r) { var s = _getPrototypeOf(this).constructor; e = Reflect.construct(o, arguments, s); } else e = o.apply(this, arguments); return _possibleConstructorReturn(this, e); }; }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
/**
 * Binds the decorated function to the object instance.
 * Case 1: The target is an ES6 class (has a constructor function)
 *   it stores the function reference (in the private _toBind map) to bind it later in the constructor.
 *   In this case the @bindInConstructor decorator should be used on the target class or object.
 * Case 2: The target is a simple object
 *   it overrides the property descriptor, and binds the function on the first get (when it is used first)
 *   This case does not support inheritance.
 *
 * @param {object} target Class or object
 * @param {string} name Name of the function
 * @param {object} descriptor The descriptor of the property
 * @returns {object} The modified descriptor object
 */
var bind = exports.bind = function bind(target, name, descriptor) {
  if (!target || !name || !descriptor || !(descriptor.value instanceof Function)) {
    throw new Error('The @bind decorator should be applied only on class or object functions!');
  }

  // if it has a constructor, collect the function names to bind
  if (target.constructor) {
    var key = _getKeyForObject(target.constructor);
    if (!_toBind[key]) {
      _toBind[key] = [];
    }
    _toBind[key].push(name);
    return descriptor;
  }

  // standard binding for non Component classes
  var enumerable = descriptor.enumerable,
    configurable = descriptor.configurable,
    writable = descriptor.writable,
    value = descriptor.value;
  return {
    enumerable: enumerable,
    configurable: configurable,
    get: function get() {
      var bound = value.bind(this);
      Object.defineProperty(this, name, {
        enumerable: enumerable,
        configurable: configurable,
        writable: writable !== false,
        value: bound
      });
      return bound;
    },
    set: function set(value) {
      if (descriptor.writable === false) {
        return;
      }
      Object.defineProperty(this, name, {
        enumerable: enumerable,
        configurable: configurable,
        writable: true,
        value: value
      });
    }
  };
};

/**
 * Object array for generating object keys
 * @type {Array}
 * @private
 */
var _objects = [];

/**
 * Creates a key for the input object
 * It simply returns the index of the object in the _objs array.
 * @param obj
 * @returns {number}
 * @private
 */
var _getKeyForObject = function _getKeyForObject(obj) {
  var idx = _objects.indexOf(obj);
  if (idx === -1) {
    _objects.push(obj);
    idx = _objects.indexOf(obj);
  }
  return idx;
};

/**
 * Map of class names and bound functions.
 * @type {{}}
 * @private
 */
var _toBind = {};

/**
 * Binds the collected methods to the instance in construction time. This allows to bind the overridden methods instead
 * of the parent method (which destroys the ability to call the super method in the child class).
 */
var bindInConstructor = exports.bindInConstructor = function bindInConstructor(target) {
  if (!target.constructor) {
    return target;
  }
  return /*#__PURE__*/function (_target) {
    _inherits(_class, _target);
    var _super = _createSuper(_class);
    function _class() {
      var _this;
      _classCallCheck(this, _class);
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }
      _this = _super.call.apply(_super, [this].concat(args));
      var key = _getKeyForObject(target);
      if (_toBind[key]) {
        for (var i in _toBind[key]) {
          var fn = _toBind[key][i];
          if (!_this[fn]) {
            throw new Error("This instance has no function to bind: ".concat(fn));
          }
          _this[fn] = _this[fn].bind(_assertThisInitialized(_this));
        }
      }
      return _this;
    }
    return _createClass(_class);
  }(target);
};