CSGO stats bookmarklet

gistfile1.txt

javascript:
(function () {
    let CsgoMap;
    (function (CsgoMap) {
        CsgoMap["de_mirage"] = "Mirage";
        CsgoMap["de_dust2"] = "Dust II";
        CsgoMap["de_subzero"] = "Subzero";
        CsgoMap["de_train"] = "Train";
        CsgoMap["de_nuke"] = "Nuke";
        CsgoMap["de_inferno"] = "Inferno";
        CsgoMap["de_cache"] = "Cache";
        CsgoMap["de_overpass"] = "Overpass";
    })(CsgoMap || (CsgoMap = {}));
    async function getAllMatches() {
        if (window.location.hostname != 'steamcommunity.com') {
            alert('Redirecting to steamcommunity.com, please run the bookmarklet again after the page has reloaded');
            window.location.hostname = 'steamcommunity.com';
        }
        const userAvatar = document.querySelector('#global_actions>a.user_avatar');
        if (!userAvatar) {
            alert('You need to be logged in');
            throw new Error('User not logged in');
        }
        const profileLink = userAvatar.href.replace(/\/$/, '');
        const matches = [];
        let continueToken;
        do {
            const params = new URLSearchParams({
                ajax: '1',
                tab: 'matchhistorycompetitive',
            });
            if (continueToken) {
                params.append('continue_token', continueToken);
            }
            const response = await fetch(`${profileLink}/gcpd/730?${params.toString()}`, {
                credentials: 'include',
            }).then(res => res.json());
            if (!response.success) {
                throw new Error(JSON.stringify(response));
            }
            const parser = new DOMParser();
            const dom = parser.parseFromString(response.html, 'text/html');
            matches.push(...Array.from(dom.querySelectorAll('.generic_kv_table.csgo_scoreboard_root>tbody>tr'))
                .map(tr => {
                return Object.assign({ map: getMap(tr), time: getTime(tr), waitTime: getWaitTime(tr), matchDuration: getMatchDuration(tr), score: getScore(tr), demo: getDemo(tr) }, getTeams(tr, profileLink));
            })
                .filter(({ map }) => !!map));
            continueToken = response.continue_token;
        } while (continueToken);
        return matches;
    }
    const getTeams = (tr, profileLink) => {
        const teams = [[], []];
        const players = Array.from(tr.querySelectorAll('.csgo_scoreboard_inner_right>tbody>tr'));
        let currentTeam = -1;
        for (const player of players) {