brusc/dist/brusc/container/Container.js

IOC Container for Effective JS development

"use strict";

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

var _utils = require("../common/utils");

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; }

var Container = /*#__PURE__*/function () {
  function Container(_ref) {
    var instanceProviders = _ref.instanceProviders,
        adapters = _ref.adapters;

    _classCallCheck(this, Container);

    this._instanceProviders = instanceProviders;
    this._adapters = adapters;
    this._keptInstances = new Map();
    this._circularDependencyControl = new Set();
  }

  _createClass(Container, [{
    key: "provide",
    value: function provide(key) {
      if (this._keptInstances.has(key)) {
        return this._keptInstances.get(key);
      }

      this._guardNotInCircularDependency(key);

      this._guardHasInstanceProvider(key);

      this._circularDependencyControl.add(key);

      var instanceProvider = this._instanceProviders.get(key);

      var instance = instanceProvider.provide(key);

      this._circularDependencyControl.delete(key);

      this._adapters.forEach(function (adapter) {
        instance = adapter.process(key, instance);
      });

      if (instanceProvider.isSingleton) {
        this._keptInstances.set(key, instance);
      }

      return instance;
    }
  }, {
    key: "loadEagerInstances",
    value: function loadEagerInstances() {
      var _this = this;

      Array.from(this._instanceProviders.values()).forEach(function (instanceProvider) {
        return instanceProvider.isEager && _this.provide(instanceProvider.key);
      });
    }
  }, {
    key: "_guardNotInCircularDependency",
    value: function _guardNotInCircularDependency(key) {
      if (this._circularDependencyControl.has(key)) {
        throw new Error("Circular dependency [".concat(Array.from(this._circularDependencyControl.values()).map(function (k) {
          return (0, _utils.stringKey)(k);
        }).join('->'), "->").concat((0, _utils.stringKey)(key), "]"));
      }
    }
  }, {
    key: "_guardHasInstanceProvider",
    value: function _guardHasInstanceProvider(key) {
      if (!this._instanceProviders.has(key)) {
        throw new Error("No instance provider defined for [".concat((0, _utils.stringKey)(key), "]"));
      }
    }
  }]);

  return Container;
}();

exports.Container = Container;