Socket/public/static/handle/js/error-report.js

(function() {
    var reportUrl = '/log/report';
    var queue = [];
    var sending = false;

    function send(data) {
        if (queue.length >= 10) return;
        data.source = 'handle';
        data.time = new Date().toISOString();
        data.url = location.href;
        queue.push(data);
        flush();
    }

    function flush() {
        if (sending || queue.length === 0) return;
        sending = true;
        var item = queue.shift();
        var xhr = new XMLHttpRequest();
        xhr.open('POST', reportUrl);
        xhr.setRequestHeader('Content-Type', 'application/json');
        xhr.onloadend = function() { sending = false; flush(); };
        xhr.onerror = function() { sending = false; };
        xhr.timeout = 3000;
        xhr.send(JSON.stringify(item));
    }

    window.onerror = function(message, source, lineno, colno, error) {
        send({
            type: 'error',
            message: String(message),
            stack: error && error.stack ? error.stack.substring(0, 2000) : '',
            file: source,
            line: lineno,
            col: colno
        });
    };

    window.addEventListener('unhandledrejection', function(event) {
        var reason = event.reason;
        send({
            type: 'unhandledrejection',
            message: reason && reason.message ? reason.message : String(reason),
            stack: reason && reason.stack ? reason.stack.substring(0, 2000) : ''
        });
    });
})();