Introduction to Chromatic Logger

The Chromatic Logger is a feature-rich logging library that simplifies logging in modern web applications. It provides a plethora of useful APIs, making it an ideal choice for developers looking to implement robust logging solutions.

Core APIs

Initializing Chromatic Logger

To get started, you need to initialize the Chromatic Logger with its default settings using the initialize API.

 const logger = new ChromaticLogger(); logger.initialize(); 

Logging Messages

You can log messages of different levels such as info, warn, error, and debug. Here are some examples:

 logger.info('This is an info message');
 logger.warn('This is a warning message');
 logger.error('This is an error message');
 logger.debug('This is a debug message');

Setting Log Levels

The Chromatic Logger allows you to set the log level to control which logs to capture. For instance:

 logger.setLevel('warn');

Custom Log Formats

You can define custom log formats to structure your log entries:

 logger.setFormat('%timestamp% - %level%: %message%');

Log Rotation

Log rotation is essential for managing log file sizes. Use the enableRotation API to set it up:

 logger.enableRotation({ size: '10M', count: 3 });

Advanced APIs

Conditional Logging

Use conditional logging to generate logs only under certain conditions:

 logger.conditional(log => log.level === 'error', log => console.error(log.message));

Integrating with External Tools

Chromatic Logger can integrate with external monitoring tools:

 logger.addTransport(new ExternalTransport());

Asynchronous Logging

For performance gains, leverage asynchronous logging:

 logger.asyncLog('This is an asynchronous log message');

Application Example

Below is a simple example of an application using Chromatic Logger:

 import ChromaticLogger from 'chromatic-logger';

 const logger = new ChromaticLogger();

 logger.initialize();
 logger.setLevel('info');
 
 logger.info('Application started');
 
 try {
   // Simulate application logic here
   throw new Error('Simulated error');
 } catch (error) {
   logger.error('An error occurred: ' + error.message);
 }
 
 logger.info('Application ended');

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