window error ignore

a.js

// filter out stupid error messags
(function () {
    const prev = window.addEventListener;
    const ignore = ['__gCrWeb.autofill.'];

    window.addEventListener = function (a, b, c) {
        if (a === 'error') {
            return prev(a, function (err) {
                // if error is matched to ignore list, ignore it then
                if (err && err.message && ignore.filter(t => err.message.indexOf(t) > -1).length) {
                    return;
                } else {
                    prev.apply(window, arguments);
                }
            }, c);
        }
        return prev.apply(window, arguments);
    };
})();