var ledger = require('../'); var logger = ledger.createLogger( {}, [ new ledger.transactions.file({}) ]); logger.on('log::error', function(time, msg){ //do somethign special with errors }); logger.on('log::*', function(time, msg){ //catchall for any logs }); console.log('log'); console.info('info'); console.warn('warn'); console.error('error');