IoLogger

Overview

The AppLogger class is a simple logger utility designed to log messages with different levels of severity (info, alert, error, and job) to the console with color-coded output.

Installation

To use the AppLogger, simply include the AppLogger class in your project. You can copy the class definition into your project or import it as a module if provided.

npm install io-logger

Usage

Here is how you can use the AppLogger in your project:

import { logger } from "io-logger";

// Log an info message
logger.info('This is an info message');

// Log an alert message
logger.alert('This is an alert message');

// Log an error message
logger.error('This is an error message');

// Log an Error object
const error = new Error('This is an error object');
logger.error(error);

// Log a job-related message
logger.job('This is a job message');

// Log a debug message
logger.debug('This is a debug message');

API

LoggerLevelsTypes

type LoggerLevelsTypes = "info" | "alert" | "error" | "job" | "debug";

Enumeration of possible log levels.

AppLogger Class

Constructor

new AppLogger()

Creates a new instance of AppLogger.

Methods

• info(message: string): void

  Logs an info message.

  • message: The info message to log.

• alert(message: string): void

  Logs an alert message.

  • message: The alert message to log.

• error(args: string | Error): void

  Logs an error message or an Error object.

  • args: The error message or Error object to log.

• job(message: string): void

  Logs a job-related message.

  • message: The job-related message to log.

  • job(message: string): void

  Logs a debug-related message.

  • message: The debug-related message to log.
  • debug(message: string): void

Private Methods

• write(message: string, level: LoggerLevelsTypes): void

  Writes a message to the stdout stream with a specified log level.

  • message: The message to log.
  • level: The log level of the message.

• getColor(level: LoggerLevelsTypes): (text: string) => string

  Gets the color function for a specified log level.

  • level: The log level for which to get the color function.

  Returns a function that applies the color for the specified log level to a given text.

Example

import { logger } from "io-logger";

// Example usage
logger.info('Informational message');
logger.alert('Alert message');
logger.error('Error message');
logger.error(new Error('Error object message'));
logger.job('Job related message');
logger.debug('This is a debug message');

This will produce color-coded output in the console for each log level.