feat: added pino logger

Author: shubham-sharmas

Diff for: package.json

@@ -51,13 +51,16 @@
     "typescript": "^5.3.3"
   },
   "dependencies": {
+    "@types/pino": "^7.0.5",
     "@typescript-eslint/eslint-plugin": "^6.14.0",
     "@typescript-eslint/parser": "^6.14.0",
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",
     "eslint": "^8.56.0",
     "express": "^4.18.2",
     "helmet": "^7.1.0",
+    "pino": "^8.17.2",
+    "pino-pretty": "^10.3.1",
     "prettier": "^3.1.1"
   },
   "engines": {

Diff for: src/server.ts

@@ -1,6 +1,7 @@
 import express, { Application, Request, Response, NextFunction } from 'express';
 import helmet from 'helmet';
 import cors from 'cors';
+import pinoLogger from './utils/pino-logger';
 
 const app: Application = express();
 let unusedVar;
@@ -23,5 +24,6 @@ app.get('/health-check', (req: Request, res: Response) => {
 // Start the server
 const port = process.env.PORT || 3000;
 app.listen(port, () => {
-  console.log(`Server is listening on port ${port}`);
+  pinoLogger.info(`PINO_LOGGER_PRINT: Server is listening on port ${port}`);
+  console.log(`CONSOLE_PRINT: Server is listening on port ${port}`);
 });

Diff for: src/utils/pino-logger.ts

@@ -0,0 +1,47 @@
+import fs from 'fs';
+import { join, resolve } from 'path';
+import { default as Pino } from 'pino';
+
+const logDirectory = join(resolve(`${__dirname}/../../`), 'logs');
+
+if (!fs.existsSync(logDirectory)) {
+  fs.mkdirSync(logDirectory);
+}
+
+const logFile = `${logDirectory}/app.log`;
+const transport = Pino.transport({
+  targets: [
+    {
+      level: 'info',
+      target: 'pino/file',
+      options: {
+        destination: logFile,
+      },
+    },
+    ...(process.env.NODE_ENV !== 'production'
+      ? [
+          {
+            ...{
+              level: 'info',
+              target: 'pino-pretty',
+              options: {
+                colorizeObjects: true, //--colorizeObjects
+                messageFormat: true, // --messageFormat
+                timestampKey: 'time', // --timestampKey
+                // include: 'level,time', // --include
+                translateTime: `UTC:yyyy-mm-dd'T'HH:MM:ss'Z'`,
+              },
+            },
+          },
+        ]
+      : []),
+  ],
+});
+
+const pinoLogger = Pino(transport);
+
+/* for (let index = 0; index < 100000; index++) {
+  pinoLogger.info(`Log File >>> ${logFile} >>> ${index}`);
+} */
+
+export default pinoLogger;