Deletes all your messages you sent before the selected id in the current channel

DiscordMassDeleteMessages.js

function loadMoreMessages() {
    console.log("loading more messages");
    const buttons = document.querySelectorAll("button[type=button]");
    for(let i = 0; i < buttons.length; i++) {
        if(buttons[i].innerText == "LOAD MORE MESSAGES") {
            buttons[i].click();
            console.log("loaded more messages");
        }
    }
}
var before = 'MESSAGE ID TO START DELETING FROM';
var doStop = false;
function clearMessages() {
    console.log("clearing messages");
    const authToken = 'AUTH TOKEN';
    const channel = window.location.href.split('/').pop();
    const baseURL = `https://discordapp.com/api/channels/${channel}/messages`;
    const headers = {"Authorization": authToken };

    let clock = 0;
    const interval = 150;

    function delay(duration) {
        return new Promise((resolve, reject) => {
            setTimeout(() => resolve(), duration);
        });
    }

    fetch(baseURL + '?before=' + before + '&limit=100', {headers})
        .then(resp => resp.json())
        .then(messages => {
            return Promise.all(messages.map((message) => {
                before = message.id;
                return delay(clock += interval).then(() => fetch(`${baseURL}/${message.id}`, {headers, method: 'DELETE'}));
            }));
        }).then(() => { console.log("cleared messages"); loadMoreMessages(); clearMessages() });
}
clearMessages();