Js-simple-logger NPM

js-simple-logger

Simple JavaScript console logger.

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);
});