A flexible and configurable logging package for Node.js applications, built with Winston and supporting daily log rotation.
Install the package using npm:
npm install dera-loggerThe logger can be configured with a variety of options to suit different logging needs. Here’s a breakdown of the available configuration options:
logDirectory: The base directory for storing log files (default: logs). timestampFormat: The timestamp format for log entries (default: HH:mm:ss). addConsoleInNonProduction: Whether to add console transport in non-production environments (default: false). transports: An array of transport configurations. Each transport can be configured with: filename: Base name for the log file (default: log). source: Subdirectory or categorization for the log files. level: Log level (e.g., info, warn, error). fileDatePattern: Date pattern used for rotating files (default: YYYY-MM-DD). zippedArchive: Whether to compress archived log files (default: false). maxLogFileSize: Maximum size of the log file before it’s rotated. maxFiles: How long to keep log files for (default: 14d).
const setupLogger = require('dera-logger');
const options = { logDirectory: "logs", timestampFormat: "HH:mm:ss", fileDatePattern: "YYYY-MM-DD", zippedArchive: false, maxLogFileSize: null, maxFiles: "14d", addConsoleInNonProduction: true, transports: [ { filename: "combined", level: "silly", source: "backend" }, { filename: "error", level: "warn", source: "backend" }, { filename: "combined", level: "silly", source: "frontend" }, { filename: "error", level: "warn", source: "frontend" }, ], };
const logger = setupLogger(options);
logger.error("An error occurred", "backend"); logger.info("A new request has been received", "frontend");
// Source is optional, you may not include both in transports of options and on logger.