visual-diff-tool/src/utils/autoScroll.js

Visual regression testing tool for comparing two URLs of the same app by capturing screenshots, performing pixel-by-pixel image comparisons, and highlighting visual differences. Ideal for detecting UI changes after deployments or updates.

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

                if (totalHeight >= scrollHeight) {
                    clearInterval(timer);
                    resolve();
                }
            }, 100);
        });
    });
}

module.exports = autoScroll;