spa-bus/lib/index.js

Tools for multilevel components to pass values in any SPA

"use strict";

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

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

    this.events = {};
    this.addEventListener = this.addEventListener.bind(this);
    this.emit = this.emit.bind(this);
    this.removeEventListener = this.removeEventListener.bind(this);
  }

  _createClass(SPAEventBus, [{
    key: "addEventListener",
    value: function addEventListener(type, callBack) {
      if (typeof type !== 'string') {
        throw new Error('event type must be string');
      }

      if (typeof callBack !== 'function') {
        throw new Error('callBack type must be function');
      }

      if (!(type in this.events)) {
        this.events[type] = callBack;
      } else {
        throw new Error('this event is listening');
      }
    }
  }, {
    key: "removeEventListener",
    value: function removeEventListener(type) {
      if (typeof type !== 'string') {
        throw new Error('event type must be string');
      }

      delete this.events[type];
    }
  }, {
    key: "emit",
    value: function emit(type, params) {
      if (typeof this.events[type] === 'function') {
        this.events[type](params);
      } else {
        console.error('unknown event type');
      }
    }
  }]);

  return SPAEventBus;
}();

var _default = new SPAEventBus();

exports["default"] = _default;