Have a code:

define(function(require) {
    var Editor = Backbone.View.extend({});

    Editor.prototype.openEdition = function (edition) {
        this.pager.on('empty', this.welcome, this);
        this.pager.on('selected', this.openPage, this);
        $('.project-drawer-inner').append(this.pager.el);
    };

    Editor.prototype.welcome = function () {
    };
});

Navigator displays pager object and el property of the pager object. These are not declared in the code and probably shouldn't be visible in the navigator. The navigator should displayed only declared objects / variables or objects / variables that are on the left site in an assignments.