postal.js/lib/node/postal.diagnostics.js

module.exports = function(postal) {
	// this returns a callback that, if invoked, removes the wireTap
	return postal.addWireTap(function(data, envelope) {
		var all = _.extend(envelope, { data: data });
		if(!JSON) {
			throw "This browser or environment does not provide JSON support";
		}
		try {
			console.log(JSON.stringify(all));
		}
		catch(exception) {
			try {
				all.data = "ERROR: " + exception.message;
				console.log(JSON.stringify(all));
			}
			catch(ex) {
				console.log("Unable to parse data to JSON: " + exception);
			}
		}
	});
};