README.md

@barchart/log4js-node-appenders

Assorted appenders for use with the log4js library.

Console Appender (for AWS Lambda)

A console appender that routes output to the correct function of the console object. This appender is useful for logging within an AWS Lambda function (avoids writing all logs at the INFO level).

• TRACE -> console.trace
• DEBUG -> console.debug
• INFO -> console.log
• WARN -> console.warn
• ERROR -> console.error
• FATAL -> console.error

Usage Example

const log4js = require('log4js');

const appenders = require('@barchart/log4js-node-appenders');

log4js.configure({
	categories: {
		default: { appenders: [ 'lambda' ], level: 'trace' }
	},
	appenders: {
		lambda: {
			type: appenders.lambda,
			layout: {
				type: 'pattern',
				pattern: '%c - %m%'
			}
		}
	}
});

const logger = log4js.getLogger('Example');

logger.trace('Trace level log message');
logger.debug('Debug level log message');
logger.info('Info level log message');
logger.warn('Warn level log message');
logger.error('Error level log message');
logger.fatal('Fatal level log message');

Package Managers

This library is available as a public module on NPM.

npm install @barchart/log4js-node-appenders -S

License

This software is provided under the MIT license.