logly

logly is a small logging framework in the nodejs ecosystem that also allows one to set debug or verbose logging modes. It is useful to replace comments that describe what the code is doing, especially in debug mode.

Usage

var logly = require( 'logly' );

logly.name( 'myapp' );
logly.mode( 'debug' );

logly.debug( 'debug log' );
// stdout: myapp[debug]: debug log

logly.verbose( 'verbose log' );
// stdout: myapp[verbose]: verbose log

logly.log( 'standard log' );
// stdout: myapp: standard log

logly.warn( 'warning log' );
// stderr: myapp[warn]: warning log

logly.error( 'error log' );
// stderr: myapp[error]: error log

logly.stdout( 'stdout log' );
// stdout: stdout log
// *above does not include 'myapp'

logly.stderr( 'stderr log' );
// stderr: stderr log
// *above does not include 'myapp'

logly also accepts functions as input; this is primarily to conditionally produce a debug output of complex something if in debug mode, for example:

var options = { debug: true, output: "some.file" }
// dump options in debug mode
logly.debug( function() {
  for ( var i = 0; i < options.length; i++ ) {
    logly.debug( '[OPTION] ' + option + ": " + options[ option ] );
  }
});
// stdout: myapp[debug]: [OPTION] debug: true
// stdout: myapp[debug]: [OPTION] output: some.file