toastr wrapper - https://github.com/CodeSeven/toastr

notify.js

/*************
  CONSTRUCTOR:
 *************
  Notify.options = {"closeButton": true};      // Defines global options.
  notify = new Notify({"closeButton": false}); // You can pass custom options
*/

/*******
  USAGE
 *******
 notify.success('MSG', 'TITLE');
 
 // The title is optional;
 notify.info('TEXT');
 
 // Available methods: 
 // info, success, warning, and error
*/

/******************
  DEFAULT MESSAGES:
  *****************
  var notifyOptions = {
    messages: {
      success: 'DEFAULT SUCCESS MSG', 
      error: {
        title: 'TITLE', 
        body: 'ERROR TEXT'
      },
      info: {
        title: 'TITLE', 
        text: 'INFO TEXT' // You can use 'text' instead of 'body'.
      },
    }
  };
   
   notify = new Notify(notifyOptions); 
   notify.success();              // Will show 'DEFAULT SUCCESS MSG';
   notify.success('another msg'); // Will show 'another msg';
   notify.error();                // Title 'TITLE', Body: 'ERROR TEXT';
   notify.info();                 // Title 'TITLE', Body: 'INFO TEXT';
*/

/************
  EXCEPTIONS:
 ************
 notify.error(); // actions without a msg, or default message, will throw an error.
*/

/***********
  UTILITIES:
 ***********
 newNotify = notify.build(); // return a new instance, accepts the constructor options.
 newNotify.error('YOUR ERROR MSG');
 
 notify.set({"closeButton": true}) // Redefine the instance options.
*/

var Notify = (function() {
  function Notify(options) {
    this.set(options);
  };

  Notify.prototype = {
    constructor: Notify,

    set: function(options) {
      setOptions.call(this, options);

      return this;
    },

    info: function() {
      notificator.apply(this, notifierArgs('info', arguments));
    },

    success: function() {
      notificator.apply(this, notifierArgs('success', arguments));
    },

    warning: function() {
      notificator.apply(this, notifierArgs('warning', arguments));
    },

    error: function() {
      notificator.apply(this, notifierArgs('error', arguments));
    },

    clear: function() {
      this._client().clear();
    },

    build: function(options) {
      return new this.constructor(options);
    },

    includeTo: function(type, options) {
      if ( !type || !/^(f|o)/.test(typeof type) ) {
        throw "notify.includeTo(type, options): type must be an object";
      }

      type.prototype.notify = this.build(options);
    },

    _client: function() {
      return getClient.call(this);
    }
  };

  function notifierArgs(action, args) {
    return [action, args[0], args[1]];
  }

  function setOptions(customOptions) {
    var options        = customOptions || {},
        defaultOptions = this.constructor.options || {};

    setMessages.call(this, options);

    if( this._options ) delete this._options;

    this._options = $.extend(defaultOptions, options);
  };

  function setMessages(options) {
    if( this._messages ) delete this._messages;

    this._messages = options.messages;
  };

  function getClient() {
    toastr.options = this._options;

    return toastr;
  };

  function notificator(action, body, title) {
    var client = this._client(),
        data   = body || (this._messages && this._messages[action]);

    if(!data) throw 'Notify: messages argument is required.';

    if(typeof(data) === 'object') {
      client[action](data.text || data.body, data.title || title);
    } else {
      client[action](data, title);
    }
  };

  return Notify;
})();

Na linha "27" tem que colocar o atributo "constructor" para "Notify", exemplo:

Notify.prototype = {
constructor: Notify,
info: function (message) {
.
.
.
}

Tks @pablogravielseo