Puppeteer auto scrolling down for infinite element( puppeteer required )

scrolling-down.js

  await page.evaluate(async() => {
            await new Promise((resolve, reject) => {
                var totalHeight = 0;
                var distance = 100;
                var timer = setInterval(() => {
                    var scrollHeight = document.body.scrollHeight;
                    window.scrollBy(0, distance);
                    totalHeight += distance;

                    if (totalHeight >= scrollHeight) {
                        clearInterval(timer);
                        resolve();
                    }
                }, 50);
            })
        })

found from here.