const Logger = require('logplease');

// Create loggers, see 'options' below for details
const logger1  = Logger.create('daemon',  { filename: 'debug.log', useColors: false, appendFile: true });
const logger2  = Logger.create('utils',   { color: Logger.Colors.Yellow });
const logger3  = Logger.create('logger3', { color: Logger.Colors.Magenta, showTimestamp: false, showLevel: false });

// Set global log level
Logger.setLogLevel(Logger.LogLevel.INFO)

// CAVEAT: log functions can't take any parameters. If you need params, use string interpolation.
const number = 5;
logger1.debug(`This is a log message #${number}`);
logger1.info(`This is a log message #${number}`);
logger1.warn(`This is a log message #${number}`);
logger1.error(`This is a log message #${number}`);

logger2.debug(`This is a log message #${number}`);
logger2.info(`This is a log message #${number}`);
logger2.warn(`This is a log message #${number}`);
logger2.error(`This is a log message #${number}`);

logger3.debug(`This is a log message #${number}`);
logger3.info(`This is a log message #${number}`);
logger3.warn(`This is a log message #${number}`);
logger3.error(`This is a log message #${number}`);

Browser

Copy dist/logplease.min.js to your javascripts directory and include it in your html. See example/index.html for details.

<body>
    <script type="text/javascript" src="logplease.min.js" charset="utf-8"></script>
    <script type="text/javascript">
      var logger  = Logger.create('logger name');
      logger.debug(`This is a log message`);
      logger.info(`This is a log message`);
      logger.warn(`This is a log message`);
      logger.error(`This is a log message`);  
    </script>
</body>

Log level

You can set a global log level to display only the wanted log messages.

const Logger = require('logplease');
Logger.setLogLevel(Logger.LogLevel.ERROR) // Show only ERROR messages
// or
Logger.setLogLevel('ERROR')

Log levels:

DEBUG
INFO
WARN
ERROR
NONE

Colors

You can set a color per logger.

const Logger = require('logplease');
const logger = Logger.create("logger name", { color: Logger.Colors.Yellow });

Colors:

Black, Red, Green, Yellow, Blue, Magenta, Cyan, Grey, White

Options

You can customize your logger.

const Logger = require('logplease');
const logger = Logger.create("logger name", options);

Available options and defaults:

const options = {
  useColors: true,     // Enable colors
  color: Colors.White, // Set the color of the logger
  showTimestamp: true, // Display timestamp in the log message
  showLevel: true,     // Display log level in the log message
  filename: null,      // Set file path to log to a file
  appendFile: true,    // Append logfile instead of overwriting
};

Build

Install build dependencies:

npm install

The build command will build the browser distributable. Note that for Node.js it is not needed to run the build command.

npm run build:dist

The distributable file will be located in dist/logplease.min.js

Build the browser example:

npm run build_examples

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Package last updated on 15 Apr 2016

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