window.addEventListener('error', (event) => {
    const { message, filename, lineno, colno, error } = event;
    var debug = {
        uuid: device.uuid,
        version: appVersion,
        platform: device.platform,
        message: message,
        filename: filename,
        lineno: lineno,
        colno: colno,
        error: error.stack
    }
    sendError(debug);
    return false;
});

function sendError(error) {

    let xhr = new XMLHttpRequest();
    let url = "https://yourdomainhere.com/errorAPI";
    xhr.open("POST", url, true);
    xhr.setRequestHeader("Content-Type", "application/json");
    xhr.onreadystatechange = () => {
        // In local files, status is 0 upon success in Mozilla Firefox
        if (xhr.readyState === XMLHttpRequest.DONE) {
            const status = xhr.status;
            if (status === 0 || (status >= 200 && status < 400)) {
                try {
                    console.log(xhr.responseText)
                    var data = xhr.responseText;
                    data = JSON.parse(data);
                    //do something here with the JSON response, if neccessary
                } catch (error) {

                }
            } else {
                try {
                    //Something really went wrong...
                    //emergency code here
                } catch (error) {

                }
            }
        }
    };
    var data = JSON.stringify(error);
    xhr.send(data);
}