logify

Logging library for node.

Install

Install the package with npm:

$ npm install logify

Usage

var logify = require('logify');
var logger = logify();

logger.debug('This is a debug message!');
logger.info('You %s interpolate variables, using util.format!', 'can');
logger.notice(err);
logger.warning(err, 'Custom error messages, with interpolation: %s', err.message);
logger.error({
  foo: 'bar'
}, 'Additional fields to log');
// other log levels are `crit`, `alert`, and `emerg`

Log levels

Default log levels are syslog levels, defined in logify-syslog-levels, but you can use your own log levels:

var logger = logify({
  levels: myLogLevels
});

levels should be an array of objects (levels). Each level should have a name (that is used to create a shorthand method on logger), a code (for determining log level, lower leves have higher priority), and an optional color function, which is used to decorate output.

Transports

Default transport is logify-console-transport, but you can write your own!

var logger = logify({
  transports: [myTransport]
});

// or

logger.add(mytransport);

Child loggers

Use logger.child(additionalContext) to create a child logger, with more context.

Serializers

Serializers are used to transform context to a JSONifyable object. Each key in the context can has a serializer.

License

MIT