error.js

var startErrorTracking = function(){
	window.addEventListener('error', function (err) {
		var lineAndColumnInfo = err.colno ? ' line:' + err.lineno +', column:'+ err.colno : ' line:' + err.lineno;
		push.call(this, 'FrontendError',
			err.message,
			err.filename + lineAndColumnInfo + ' -> ' +  navigator.userAgent);
	});
};