Disable winston logging when running unit tests?

Question

Can Winston logging be selectively disabled when executing unit tests of a node module?

Ideally, I\'d like to have logging for informational and debug purposes when the

Answer 1

The set up stuff did not work for me, I am using winston v3.1.0, there is a new way to create loggers.

From the winston site: https://github.com/winstonjs/winston

The recommended way to use winston is to create your own logger. The simplest way to do this is using winston.createLogger:

const logger = winston.createLogger({
    level: 'info',
    format: winston.format.json(),
    transports: [
      //
      // - Write to all logs with level `info` and below to `combined.log` 
      // - Write all logs error (and below) to `error.log`.
      //
      new winston.transports.File({ filename: 'error.log', level: 'error' }),
      new winston.transports.File({ filename: 'combined.log' })
    ]
  });

  //
  // If we're not in production then log to the `console` with the format:
  // `${info.level}: ${info.message} JSON.stringify({ ...rest }) `
  // 
  if (process.env.NODE_ENV !== 'production') {
    logger.add(new winston.transports.Console({
    format: winston.format.simple()
  }));
}

So I do this in my logger.js

if (process.env.NODE_ENV === 'test') {
    return winston.createLogger({
      transports: [ new winston.transports.Console({ level: 'error'}) ]
    });
}

This stops all log messages unless you have an error, which I would like to see to help with debugging any issues.

Hope this helps.