I want to add one more event in "mail.Chatter" template(mail/static/src/js/chatter.js). so I extend the "mail.Chatter" like below

odoo.define('override_chatter.override_chatter', function (require) {

"use strict";

var Chatter = require('mail.Chatter');

console.log('Chatter', Chatter)

var Chatter_Extend = Chatter.Chatter.extend({

     init: function (parent, dataset, options) {

          this._super(parent, options);

          this.events = _.extend(this.events, {

                  "click .o_composer_button_chatter_link": "on_open_o_composer_button_chatter",

          });

     },

});

});

But from the console, i got some error. Please check below.

Chatter function Class(){if(this.constructor!==OdooClass){throw new Error("You can only instanciate objects with the 'new' operator");}

Please correct me if am wrong.Is there any other method to override this "mail.Chatter" template?