nlogger

    1.0.0 • Public • Published

    nlogger

    nlogger is a Node.js logging library that can

    • print messages with module name and current line number so you know from where it was called
    • print messages in color
    • print parameters in message
    • be configured from file

    Usage

    Use npm or download. Then add to your code:

    var logger = require('nlogger').logger(module);

    module is object defined automatically by Node.js. If you don't want automatic module names, replace it with your desired string name.

    logger.info(message);
    logger.info(message, variable, message, variable...);

    Examples

    var logger = require('nlogger').logger(module);
    logger.info('Info message');
    logger.debug('Debug message');
    logger.warn('Warning message');
    logger.error('Error message');
    logger.trace('Trace message');
    logger.info('Array = ', [1, 2, 3, 4], ', Object = ', {one: 1, two: 2});

    Output samples

    2015-02-23 20:39:03.570 INFO  main:5 - Info message
    2015-02-23 20:39:03.588 DEBUG main:6 - Debug message
    2015-02-23 20:39:03.589 WARN  main:7 - Warning message
    2015-02-23 20:39:03.590 ERROR main:8 - Error message
    2015-02-23 20:39:03.590 TRACE main:9 - Trace message
    2015-02-23 20:39:03.590 INFO  main:10 - Array = [ 1, 2, 3, 4 ], Object = { one: 1, two: 2 }
    
    2015-02-23 20:59:12.496 INFO  my-modules/first:3 - Message from first module from line #3
    2015-02-23 20:59:12.514 INFO  my-modules/second:10 - Message from second module from line #10
    2015-02-23 20:59:12.515 INFO  fake-module-name:3 - Message from third module from line #3
    2015-02-23 20:59:12.516 INFO  <unknown>:3 - Message from fourth module from line #3
    

    Configuration

    nlogger can load optional configuration file nlogger.json which looks like:

    {
        "color": "auto",
        "level": {
            "*": "debug",
            "my-modules/first": "info"
        }
    }
    • color - print message in color? [true, false, "auto"]
    • level.* - default debug level
    • level.yourModuleName - log level for specified module

    Possible log levels are trace, debug, info, warn, error.

    Changes

    1.0.0 - Compatibility with latest node.js 0.12.x

    0.4.0 - Logging methods parameters changed

    0.3.1 - Fixed util dependencies

    0.3.0 - Added parameters support to logging methods

    0.2.0 - Added configuration file support

    0.1.0 - First npm release

    License

    Commercial license available at http://iostock.com/nlogger

    Install

    npm i nlogger

    DownloadsWeekly Downloads

    8

    Version

    1.0.0

    License

    none

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