DLogger

A zero-dependency, developer-friendly logger for Node.js applications. This logger provides simple methods for logging messages with optional timestamps and color coding, making it easy to integrate and use in any Node.js project.

Features

• Zero Dependencies: No external packages required.
• Simple API: Methods for logging messages at different levels (log, info, warn, error).
• Optional Timestamps: Include or exclude timestamps in log messages.
• Color-Coded Output: Enable or disable color-coded log levels for terminal output.
• SQL Logging: Special support for logging SQL queries, especially useful with Sequelize.
• Mongoose Logging: Special support for logging MongoDB queries while using mongoose.

Disclaimer

This logger uses console.log() under the hood for outputting messages to the terminal. As a result, log messages will appear in the console as if they were printed directly by console.log(), with the added functionality of timestamps and color coding.

Installation

Install dlogger with npm

  npm i @aktech27/dlogger

or using yarn

  yarn add @aktech27/dlogger

Usage/Examples

Create an instance and use on the go

ES6+ Example

import Logger from '@aktech27/dlogger';

const logger = new Logger();

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

export default logger;

CommonJS Example

const { Logger } = require('@aktech27/dlogger');

const logger = new Logger();

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

module.exports = logger;

or if you have a configuration for logger, go to the configuration file, ideally logger.config.js and export it from there.

Configuring the Logger instance

The Logger class accepts options(optional) object as constructor params.

options (optional): An object to customize the logger's behavior.

• timestamps (boolean, default: true): Whether to include timestamps in log messages.
• colors (boolean, default: true): Whether to color-code log levels in terminal output.

import Logger from '@aktech27/dlogger';

const logger = new Logger({ timestamps: false, colors: false });

export default logger;

Using with sequelize for SQL query

DLogger can also be integrated with Sequelize to log SQL queries, providing a clear, color-coded view of the queries being executed using the sqlLog method.

Refer Sequelize Documentation

Example Usage

const { Logger } = require('@aktech27/dlogger');
const { Sequelize } = require('sequelize');

const logger = new Logger();

const sequelize = new Sequelize('your_db_uri', {
  logging: (...msg) => logger.sqlLog(msg),
  benchmark: true // Optional - but works with bench mark too
});

Using with mongoose for MongoDB query

DLogger can also be integrated with mongoose to log MongoDB queries, providing a clear, color-coded view of the queries being executed using the mongoLog method.

Refer Mongoose Documentation

Example Usage

const { Logger } = require('@aktech27/dlogger');
const mongoose = require('mongoose');

const logger = new Logger();

mongoose.connect('your_mongo_uri')
mongoose.set('debug', (...msg) => logger.mongoLog(msg));