You can manually report exceptions to the dashboard using this API. The method takes an exception as an argument.
CrashReporting.report(exception)
[IBGCrashReporting reportException:exception];
CrashReporting.reportException(new NullPointerException("Test issue"));
try {
throw new SyntaxError();
} catch (error) {
alert(error.name);
CrashReporting.reportJSException(error);
}