@mic-rexjs/usecases/lib/classes/EntityStore/index.js

Usecases of Clean Architecture

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.EntityStore = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _classPrivateFieldInitSpec(obj, privateMap, value) { _checkPrivateRedeclaration(obj, privateMap); privateMap.set(obj, value); }
function _checkPrivateRedeclaration(obj, privateCollection) { if (privateCollection.has(obj)) { throw new TypeError("Cannot initialize the same private elements twice on an object"); } }
function _classPrivateFieldGet(s, a) { return s.get(_assertClassBrand(s, a)); }
function _assertClassBrand(e, t, n) { if ("function" == typeof e ? e === t : e.has(t)) return arguments.length < 3 ? t : n; throw new TypeError("Private element is not present on this object"); }
var _watchers = /*#__PURE__*/new WeakMap();
var EntityStore = exports.EntityStore = /*#__PURE__*/function () {
  function EntityStore(initialEntity) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    (0, _classCallCheck2["default"])(this, EntityStore);
    _classPrivateFieldInitSpec(this, _watchers, []);
    (0, _defineProperty2["default"])(this, "value", void 0);
    var onChange = options.onChange;
    this.value = initialEntity;
    if (!onChange) {
      return;
    }
    this.watch(onChange);
  }
  (0, _createClass2["default"])(EntityStore, [{
    key: "setValue",
    value: function setValue(value) {
      var oldValue = this.value;
      this.value = value;
      if (oldValue === value) {
        return;
      }
      var _iterator = _createForOfIteratorHelper(_classPrivateFieldGet(_watchers, this)),
        _step;
      try {
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          var watcher = _step.value;
          watcher(value, oldValue);
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }
    }
  }, {
    key: "unwatch",
    value: function unwatch(watcher) {
      var watchers = _classPrivateFieldGet(_watchers, this);
      var index = watchers.indexOf(watcher);
      if (index === -1) {
        return;
      }
      watchers.splice(index, 1);
    }
  }, {
    key: "watch",
    value: function watch(watcher) {
      _classPrivateFieldGet(_watchers, this).push(watcher);
    }
  }]);
  return EntityStore;
}();