@virtuous/conductor/Stack/index.js

A JavaScript router

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) { return; } var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var Stack =
/*#__PURE__*/
function () {
  function Stack() {
    _classCallCheck(this, Stack);

    _defineProperty(this, "stack", new Map());
  }

  _createClass(Stack, [{
    key: "add",

    /**
     * @param {string} id The key.
     * @param {Object} entry The entry to add.
     */
    value: function add(id, entry) {
      if (!id || !entry) {
        return;
      }

      this.stack.set(id, entry);
    }
    /**
     * @returns {Array|null}
     */

  }, {
    key: "first",
    value: function first() {
      if (!this.stack.size) {
        return null;
      }

      return this.stack.entries().next().value;
    }
    /**
     * @param {string} id The key to lookup.
     * @returns {Object|null}
     */

  }, {
    key: "get",
    value: function get(id) {
      if (!id || !this.stack.has(id)) {
        return null;
      }

      return this.stack.get(id);
    }
    /**
     * @param {number} index The index to find.
     * @returns {Object|null}
     */

  }, {
    key: "getByIndex",
    value: function getByIndex() {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;

      if (index === null) {
        return null;
      }

      if (index > this.stack.size - 1) {
        return null;
      }

      return this.stack.get(Array.from(this.stack.keys())[index]);
    }
    /**
     * @returns {Map}
     */

  }, {
    key: "getAll",
    value: function getAll() {
      return this.stack;
    }
    /**
     * @returns {Array|null}
     */

  }, {
    key: "last",
    value: function last() {
      if (!this.stack.size) {
        return null;
      }

      return Array.from(this.stack.entries()).pop();
    }
    /**
     * Clers the stack of all Routes.
     */

  }, {
    key: "clear",
    value: function clear() {
      this.stack.clear();
    }
    /**
     * @param {string} id The key to remove.
     */

  }, {
    key: "remove",
    value: function remove(id) {
      this.stack["delete"](id);
    }
    /**
     * @param {Array} The key and value to reset to.
     */

  }, {
    key: "reset",
    value: function reset() {
      var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.first(),
          _ref2 = _slicedToArray(_ref, 2),
          id = _ref2[0],
          entry = _ref2[1];

      this.stack.clear();
      this.add(id, entry);
    }
    /**
     * @param {string} id The key to update.
     * @param {Object} entry The value to update at the given id.
     */

  }, {
    key: "update",
    value: function update(id, entry) {
      if (!id || !entry) {
        return;
      }

      if (!this.stack.has(id)) {
        return;
      }

      this.stack.set(id, entry);
    }
  }]);

  return Stack;
}();

var _default = new Stack();

exports["default"] = _default;