js-simple-logger

Simple JavaScript console logger.

Table of contents

• Installation
• Usage
• Breaking changes
• License
• Author

Installation

npm install --save js-simple-logger

Usage

Simple logger

import * as Logger from 'js-simple-logger';
 
const logger = Logger.getLogger();
logger.trace('message');
logger.debug('message');
logger.table([1, 2, 3]);
logger.info('message');
logger.log('message');
logger.warn('message');
logger.error('message');

Contextual logger

import * as Logger from 'js-simple-logger';
 
const logger = Logger.getLogger('myFunc');
logger.debug('message');

setDateFormat

Use this function before creating any loggers:

import * as Logger from 'js-simple-logger';
 
Logger.setDateFormat('mm:ss');

setMinimumLogLevel

Use this function before creating any loggers:

import * as Logger from 'js-simple-logger';
 
Logger.setMinimumLogLevel(Logger.getLogLevels().TRACE);

Available log levels:

• OFF (-1)
• TRACE (0)
• DEBUG (1)
• TABLE (2)
• INFO (3)
• LOG (4)
• WARN (5)
• ERROR (6)

setFormatter

Use this function before creating any loggers:

import * as Logger from 'js-simple-logger';
 
Logger.setFormatter((metaInformation = {}) => (messages) => {
  const {dateFormat, logLevel, context} = metaInformation;
  
  return [Logger.formatLogLevel(logLevel), context].concat(messages);
});

Breaking changes

1.x.x > 2.x.x

Instead of new Logger() you create a new logger by using getLogger().

License

MIT (https://github.com/Kaishiyoku/js-simple-logger/blob/master/LICENSE)

Author

Twitter: @kaishiyoku
Website: www.andreas-wiedel.de