🚀 live-logger-node

Realtime live logger middleware for Express and Node.js.

Stream logs live in browser using SSE.

✨ Features

• Live logs endpoint
• Console log capture
• Request logging
• Error logging
• Uncaught exception logging
• Unhandled rejection logging
• Auto log trimming
• Winston powered
• TypeScript support
• ESM + CommonJS support

📦 Installation

npm install live-logger-node

⚡ Usage

import express from "express";

import { createLiveLogsMiddleware } from "live-logger-node";

const app = express();

app.use(express.json());

app.use(createLiveLogsMiddleware());

app.get("/", (_req, res) => {
  console.log("Hello World");

  res.send("Working");
});

app.listen(3000);

🌐 Live Logs

Open:

http://localhost:3000/logs/live

⚙️ Config

app.use(
  createLiveLogsMiddleware({
    route: "/logs/live",

    logDir: "./logs",

    logFile: "combined.log",

    errorFile: "error.log",

    maxLines: 10000,

    captureConsole: true,

    trimInterval: 30000,
  })
);

📘 Options

| Option | Type | Default | | -------------- | ------- | ------------ | | route | string | /logs/live | | logDir | string | ./logs | | logFile | string | combined.log | | errorFile | string | error.log | | maxLines | number | 10000 | | captureConsole | boolean | true | | trimInterval | number | 30000 |

📁 Generated Files

logs/
├── combined.log
└── error.log

🔥 Captures

• console.log
• console.info
• console.warn
• console.error
• API requests
• uncaught exceptions
• unhandled promise rejections

🧠 Example Log

{
  "type": "REQUEST",
  "method": "POST",
  "url": "/api/v1/users/login",
  "status": 200,
  "duration": "18ms"
}

🚀 Build

npm run build

👤 Author

Ankit Kumar

GitHub: https://github.com/connectankit