Node.js Winston logger wrapper to display filename

index.js

var log = require('./lib/logger')(module);

log.info('foo');

logger.js

var winston = require('winston');

var getLogger = function(module) {
    var path = module.filename.split('/').slice(-2).join('/');

    return new winston.Logger({
        transports: [
            new winston.transports.Console({
                colorize: true,
                level: 'debug',
                label: path
            }),
            new (winston.transports.File)({filename: 'debug.log', silent: false})
        ]
    });
};

module.exports = getLogger;

You can also omit printing the char (for me at least it does not contain information I would want or need in my graylog-logs) with an instant anonymous function call and javacsript object deconstruction:

// [...]
    newArguments[1].msg_location = (({ method, file, line }) => ({ method, file, line }))(getCurrentLine({ frames: 3 }));
// [...]

But this is of course up to you.