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Showing content from https://github.com/watson/console-log-level below:

watson/console-log-level: The most simple logger imaginable

A dead simple logger. Will log to STDOUT or STDERR depending on the chosen log level. It uses console.info, console.warn and console.error and hence supports the same API.

Log levels supported: trace, debug, info, warn, error and fatal.

npm install console-log-level

var log = require('console-log-level')({ level: 'info' })

log.trace('a') // will not do anything
log.debug('b') // will not do anything
log.info('c')  // will output 'c\n' on STDOUT
log.warn('d')  // will output 'd\n' on STDERR
log.error('e') // will output 'e\n' on STDERR
log.fatal('f') // will output 'f\n' on STDERR

Configure the logger by passing an options object:

var log = require('console-log-level')({
  prefix: function (level) {
    return new Date().toISOString()
  },
  level: 'info'
})

A string to specify the log level. Defaults to info.

Specify this option if you want to set a prefix for all log messages. This must be a string or a function that returns a string.

Will get the level of the currently logged message as the first argument.

A boolean to log everything to stderr. Defauls to false.

MIT

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