books/client/desk/listpage.js

const frappe = require('frappejs');
const Page = require('frappejs/client/view/page');
const view = require('frappejs/client/view');

module.exports = class ListPage extends Page {
    constructor(doctype) {
        let meta = frappe.getMeta(doctype);

        // if center column is present, list does not have its route
        const hasRoute = frappe.desk.center ? false : true;

        super({
            title: frappe._("List: {0}", meta.name),
            parent: hasRoute ? frappe.desk.body : frappe.desk.center,
            hasRoute: hasRoute
        });

        this.list = new (view.geListClass(doctype))({
            doctype: doctype,
            parent: this.body,
            page: this
        });

        this.on('show', async () => {
            await this.list.run();
        });
    }
}