goonstation-2020/browserassets/js/errorHandler.js

(function(window, navigator) {

	var escaper = encodeURIComponent || escape;

	var triggerError = function(msg, url, line, col, error) {
		window.onerror(msg, url, line, col, error);
	};

	/**
	 * Directs JS errors to a byond proc for logging
	 * 
	 * @param string file Name of the logfile to dump errors in, do not prepend with data/
	 * @param boolean overrideDefault True to prevent default JS errors (an big honking error prompt thing)
	 * @param function customSuppress Pass a function that returns true to prevent logging of a specific error
	 * @return boolean
	 */
	var attach = function(file, overrideDefault, customSuppress) {
		overrideDefault = typeof overrideDefault === 'undefined' ? false : overrideDefault;
		file = escaper(file);

		//Prevent debug logging for those using anything lower than IE 10
		var trident = navigator.userAgent.match(/Trident\/(\d)\.\d(?:;|$)/gi);
		var msie = document.documentMode;
		var suppressLogging = (msie && msie < 10) || (trident && parseInt(trident) < 6);

		//Ok enough is enough, this prevents A CERTAIN PLAYER (Studenterhue) from spamming the error logs with bullshit
		if (!window.JSON) {
			suppressLogging = true;
		}

		window.onerror = function(msg, url, line, col, error) {
			if (typeof customSuppress === 'function' && customSuppress(msg, url, line, col, error)) {
				suppressLogging = true;
			}

			if (!suppressLogging) {
				var extra = !col ? '' : ' | column: ' + col;
				extra += !error ? '' : ' | error: ' + error;
				extra += !navigator.userAgent ? '' : ' | user agent: ' + navigator.userAgent;
				var debugLine = 'Error: ' + msg + ' | url: ' + url + ' | line: ' + line + extra;
				window.location = '?action=debugFileOutput&file=' + file + '&message=' + escaper(debugLine);
			}
			return overrideDefault;
		};

		return triggerError;
	};

	window.attachErrorHandler = attach;

}(window, window.navigator));