How to hang a handler on a node in BEM?

Question

BEM

Just starting to try BEM. I master the lesson Master class on BEM from Yandex
At about 1:45:00 we write a handler for the form. There we must indicate that the form is, as it were, ready to interact with js by specifying js()(true) in bemhtml . Next, we write form.js , where we initialize the form itself, and then a problem arose. In desktop.block I added a folder form , in it I created these files form.js and form.bemhtml.js ( form.bemhtml doesn't work either). The collector does not seem to see these files and does not react to them. Maybe I'm not doing the right thing at all. Tell. I am attaching the contents of the files:

form.js

modules.define('form', ['i-bem__dom'], function (provide, BEMDOM) {

    provide(BEMDOM.decl(this.name, {

        onSetMod : {
            js: {
                inited : function () {
                    this.bindTo('submit', this._onSubmit);
                }
            }
        },

        _onSubmit: function () {
            this.emit('submit');
        },

        getVal: function () {
            return this.domElem.serialize();
        }

    }));

});

form.bemhtml

block('form')(
    tag()('form'),
    js()(true)
);