Puppeteer waitForBackboneEvent()

test.js

const puppeteer = require('puppeteer');
(async() => {
        const browser = await puppeteer.launch({
            ignoreHTTPSErrors: true,
            slowMo: 100,
            headless: false,
            args: ["--disable-notifications", "--ash-host-window-bounds 100+200-300x400"]
        });


        page.on('console', msg => {
                console.log(msg.text)
        });


        await page.goto("https://www.datememe.com", {
            waitUntil: "networkidle2"
        }).catch(function(err) {
            console.log("reject", err);
        })


        var waitForEvent = async function(event_name) {
            await page.evaluate(event_name => {
                return new Promise((resolve, reject) => {
                    if (!window.vents) reject("no events found");
                    console.log("waiting for event", event_name);
                    window.vents.on(event_name, function(msg) {
                        window.vents.off(event_name);
                        resolve();
                    });
                });
            }, event_name);
        }
        await waitForEvent("something");
})();