logem

A minimal logger for React, React Native, and Node.js apps. Logs console messages, API request outcomes, and errors. Disabled by default in production.

Features

• Logs to both console and a log file (with timestamps, Laravel-style)
• Global error capturing (Sentry-style): logs all uncaught exceptions and unhandled promise rejections by default
• Configurable log file location
• Easy to enable/disable features via config

Installation

npm install @dagmawi222/logem

Example

import {
  initLogger,
  log,
  warn,
  error,
  logApiRequest,
  logError,
} from "@dagmawi222/logem";

initLogger({
  enabled: true,
  environment: process.env.NODE_ENV, // 'dev', 'prod', etc.
  logApi: true,
  logErrors: true,
  logFilePath: "logs.txt", // (optional) defaults to 'logs.txt' in your project root
  globalErrorHandling: true, // (optional) enable/disable global error logging (default: true)
});

log("App started");
warn("Something might be off");
error("Something failed");

logApiRequest("/api/user", "GET", 200, true, 120); // url, method, status, success, duration(ms)

try {
  throw new Error("Something went wrong");
} catch (err) {
  logError("User fetch failed", err);
}

Log File Location

• By default, logs are written to logs.txt in your project root (where you run your app).
• You can change the log file location by setting logFilePath in initLogger.

Global Error Logging

• By default, all uncaught exceptions and unhandled promise rejections are logged to the file and console.
• To disable this, set globalErrorHandling: false in initLogger.

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