Custom Logger

A lightweight development logging utility for TypeScript/JavaScript projects.

Features

• Development-only logging (automatically disabled in production)
• Automatic caller file location detection
• Level-based logging (INFO, WARN, ERROR)
• TypeScript support
• Easy to integrate

Installation

npm install @sung-yeop/custom-logger

Usage

import { Logger } from "@sung-yeop/custom-logger";

// Basic usage (defaults to INFO level)
Logger.log("Hello World");

// With log levels
Logger.log("Information message", "INFO");
Logger.log("Warning message", "WARN");
Logger.log("Error message", "ERROR");

Log Levels

• INFO: General information (uses console.log)
• WARN: Warning messages (uses console.warn)
• ERROR: Error messages (uses console.error)

Environment

Logging is automatically disabled when NODE_ENV !== "development". This ensures no logs appear in production builds.

Output Format

==============================
1. 파일 위치: util/Logger.util.ts
------------------------------
2. Message : Your message here
------------------------------
3. TimeStamp : 2025-07-21T14:02:26.035Z
==============================

TypeScript Support

import { Logger, LogLevelType } from "@sung-yeop/custom-logger";

const level: LogLevelType = "INFO";
Logger.log("TypeScript message", level);

License

MIT