Download chess.com games en masse

chess-com-downloader.js

(async () => {
    year=2023
    username = 'hikaru'
    for(var month=1; month<=12; month++) {
         let url = `https://api.chess.com/pub/player/${username}/games/${year}/${month}/pgn`
         response = await fetch(url)
         const bodyText = await response.text();
         const blob = new Blob([bodyText], { type: 'text/plain' });
         const a = document.createElement('a');
         a.style.display = 'none';
         document.body.appendChild(a);
         url = window.URL.createObjectURL(blob);
         a.href = url;
         const monthFormatted = month < 10 ? `0${month}` : month;
         a.download = `ChessCom_${username}_${year}${monthFormatted}.pgn`;
         a.click();
         window.URL.revokeObjectURL(url);
         document.body.removeChild(a);
    }
})()