interface for creating log records

Usage no npm install needed!

<script type="module">
  import mlogy from '';



NPM Version Build Status Coverage Status

Interface for creating log records


npm install --save mlogy


The modules assumes loggers are organized in a tree tracked by the parent attribute however this is managed outside the implementation of the logger.

Logger(context, name, [level])

  • context

    The context contains the shared settings shared between all loggers in a system. The context is stored as context on the logger and is allowed to change during the life time of the logger to allow loggers created by libraries to be assimilated into a bigger application logger hierarchy

    • defaultProcessors

      A List of processors; functions that accepts a record and somehow modifies it by e.g attaching extra data

    • proxy

      A proxy through which all records should be sent.

  • name

    The name of the logger. By convention a dot.separated.string

  • level

    The minimum level the logger will process records for as either a numeric value or a named level from standard-levels. If undefined the level of the parent logger is used.

var Logger = require('mlogy')
  , ctx = {defaultProcessors: []}
  , root = new Logger(ctx, '', 'ERROR')
  , other = new Logger(ctx, 'other', 'DEBUG')

other.parent = root


Update the minimum level the logger will process records for

trace(frmt, ...)

debug(frmt, ...)

info(frmt, ...)

warn(frmt, ...)

error(frmt, ...)

critical(frmt, ...)

Send a message at the indicated level