scratch-utils/unfollow_all.js

let tree = [], the, user = '08draven', gek = 0, spamTimeout = 0;

function getCookie(name) {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop().split(';').shift();
}

async function downloadUser(user) {
    for (let i = 0; ; i++) {
        let fetchReq = await fetch(`https://api.scratch.mit.edu/users/${user}/following/?limit=40&offset=${i * 40}`);
        let fetchJson = await fetchReq.json();
        if (fetchJson.length < 1) break;
        tree = [...tree, ...fetchJson];
    }
}

async function unfollowUser(user) {
    if (spamTimeout > 0) {
        spamTimeout--;
        return;
    }
    if (the = tree[gek]) {
        the = the.username;
        e = await fetch(`https://scratch.mit.edu/site-api/users/followers/${the}/remove/?usernames=${user}`, {
            "method": "PUT",
            "body": "{}",
            "headers": {
                "x-csrftoken": getCookie('scratchcsrftoken')
            }
        });
        e = await e.text();
        try {
            e = JSON.parse(e);
        } catch (err) {
            e = {};
        }
        console.log(e);
        if (e.success) {
            gek++;
        } else {
            spamTimeout = 20;
        }
    } else {
        console.log("end");
    }
}

await downloadUser(user);

setInterval(function () {
    unfollowUser(user)
}, 500)