WordPress.org

npm install loggy

See example/server.js if you want to use cluster or

var app = require("Loggy");
app.listen(3000);
console.log("Loggy server listening on port %d", app.address().port);

Visit localhost:3000 install bookmarklet and activate it on wordpress installation(login to it first as admin). Then where you want to use it

global $Loggy;
$Loggy->debug(string..array..object);    
$Loggy->info(string..array..object);