#Express - Logging The express.js node.js web application framework comes with a built-in logging module called logger which is the connect.js logger. It is really handy to enable and you can use it just like any other Express module. app.use(express.logger());
Without any configuration, the logger middleware will generate a detailed log using what is called the default format. The logger actually supports four predefined log formats: default, short ,tiny, and dev. Each of these predefined formats show various amounts of detail. You can specify one of them this way:
app.use(express.logger('dev'));
If you prefer, you can customize the precise details to be logged using the the following options to format the output of the logger: