window["debugLog"] = window["debugLog"] || [];
    window.logJsError = function(message) {
        if (window["debugLog"]) {
            message += "\n================\n" + window["debugLog"].join("\n") + "\n================\n";
        }
        let a = new XMLHttpRequest();
        a.open("POST", '/error/js', true);
        a.setRequestHeader('Content-Type', 'application/json');
        let m = JSON.stringify({ message: message });
        a.send(m);
    };
      if (window.navigator.userAgent.indexOf('MSIE ') <= 0) {
            window.onerror = function(msg, url, lineNo, columnNo, error) {
                // IE doesnt support string interpolation
                //window.logJsError(`${msg}\n${url}\n${JSON.stringify(error)}\nLine: ${lineNo}\nCol:${columnNo}`);
                window.logJsError(msg + '\n' + url + '\n' + JSON.stringify(error) + '\nLine: ' + lineNo + '\nCol:' + columnNo);
                return false;
            };
      }