console-shim.js

(function(console) {
	var methods = [
		'assert', 'clear', 'count', 'debug', 'dir', 'dirxml', 'error',
		'exception', 'group', 'groupCollapsed', 'groupEnd', 'info',
		'markTimeline', 'profile', 'profileEnd', 'table', 'time', 'timeEnd',
		'timeline', 'timelineEnd', 'timeStamp', 'trace', 'warn'
	];
	
	if (!console.log) {
		console.log = function() {};
	}

	var methodsCount = methods.length;
	for (var i = 0; i < methodsCount; ++i) {
		var methodName = methods[i];
		
		if (!console[methodName]) {
			console[methodName] = console.log;
		}
	}
})(window.console = window.console || {});

console-shim.min.js

!function(e){var o=["assert","clear","count","debug","dir","dirxml","error","exception","group","groupCollapsed","groupEnd","info","markTimeline","profile","profileEnd","table","time","timeEnd","timeline","timelineEnd","timeStamp","trace","warn"];e.log||(e.log=function(){});for(var n=o.length,i=0;n>i;++i){var r=o[i];e[r]||(e[r]=e.log)}}(window.console=window.console||{})