@alwatr/logger

Logger

A lightweight, flexible, and colorful console logging library for TypeScript and ES modules.

Features

• Customizable Scopes: Organize log messages using scopes for easy filtering and debugging.
• Colorful Output: Visually distinguish different log levels and scopes with vibrant colors.
• Debug/Development Mode: Control log verbosity to optimize performance in production environments.
• Tiny Footprint: Minimal overhead, keeping your project lean and efficient.

Installation

npm install @alwatr/logger

Usage

import { createLogger } from '@alwatr/logger';

const logger = createLogger('my-module'); // Create a logger with a specific scope

function greet(name: string) {
  logger.logMethodArgs?.('greet', { name }); // Log the method call with its arguments
  console.log(`Hello, ${name}!`); 
}

greet('Ali'); 

Log Levels and Methods

• logProperty(propertyName, value): Logs a property change (useful for tracking state).
• logFileModule(fileName): Logs the module's file name for easy identification.
• logMethod(methodName): Logs the entry into a function or method.
• logMethodArgs(methodName, args): Logs a method call with its arguments.
• logStep(methodName, stepName, props?): Logs specific steps within a method.
• logMethodFull(methodName, args, result): Logs a method call with arguments and result.
• incident(methodName, code, ...args): Logs an event or expected incident (informational).
• accident(methodName, code, ...args): Logs an unexpected incident or handled error (warning).
• error(methodName, code, ...args): Logs an unexpected error (critical).
• logOther(...args): General-purpose logging with styled scope.
• time(label): Starts a timer.
• timeEnd(label): Ends a timer and logs the elapsed time.
• banner(message): Logs a large, prominent banner message.

Enabling Debug Mode

Browser

1. Open your browser's developer tools.
2. Go to the "Application" or "Storage" tab.
3. Find "Local Storage" and locate your application's domain.
4. Add a new key-value pair: debug with the value 1.
5. Reload the page.

Or use the following code snippet in the browser console:

window.localStorage?.setItem('debug', '1');

Note: Ensure the browser console's log level is set to include "Verbose" or "All" to see debug messages.

Node.js

DEBUG=1 node index.js

Sponsors

The following companies, organizations, and individuals support Nanolib ongoing maintenance and development. Become a Sponsor to get your logo on our README and website.

Contributing

Contributions are welcome! Please read our contribution guidelines before submitting a pull request.

License

This project is licensed under the AGPL-3.0 License.