save a text file with js

saveFile.js

function saveFile(text, filename, mime) {
    var link = document.createElement('a');
    link.setAttribute('download', filename);
    link.href = window.URL.createObjectURL(new Blob([text], {type: mime}));
    document.body.appendChild(link);
    window.requestAnimationFrame(function () {
        var event = new MouseEvent('click');
        link.dispatchEvent(event);
        document.body.removeChild(link);
    });
}