Scroll to position from the start of page

scroll.js

const sleep = ms => new Promise(r => setTimeout(r, ms));

async function animateScroll(dest, easeAmt) {
    window.scroll(0,0);
    let easeIn = (p) => p < 0.5 ? Math.pow(p*2, easeAmt)/2 : p;
    let easeOut = (p) => p > 0.5 ? (2 - Math.pow(2 - p*2, easeAmt))/2 : p;
    await sleep(1000);
    for (let i = 0; i < 1; i+=0.001) {
        let progress = easeIn(easeOut(i));
        window.scroll(0, dest*progress);
        await sleep(1);
    }   
}

animateScroll(10600, 4);