logger-smartify

A highly customizable logger utility built on top of winston with:

Console & file logging with rotation

• Multiple argument support in logs
• Contextual log labeling
• Optional integrations with:

npm install logger-smartify

Features

• Custom log levels: error, warn, info, debug

• Context prefix for each log

• Colorized & formatted outputs

• File logging with daily rotation

• Pass multiple messages & objects in a single log call

Configuration Options

| Option | Type | Default | Description | | ------------ | --------- | ---------------------- | ------------------------------------------------------------------------ | | level | string | 'debug' | Logging level: 'error', 'warn', 'info', 'debug' | | enableFile | boolean | false | Enable rotating file logs | | context | string | - | Prefix logs with this context | | format | string | 'combined' | Log format: 'simple', 'json', 'combined' | | silent | boolean | false | Suppress all logs | | env | string | process.env.NODE_ENV | Force environment setting |

Usage

Import & Initialize

const createLogger = require('logger-smartify');

const logger = createLogger({
  level: 'debug',
  context: 'UserService',
  enableFile: true
});

Example Logs

logger.info("User created", { userId: 123 });
logger.error("Failed to create user", { error: new Error("DB connection failed") });
logger.debug("Debug details", { query: "SELECT * FROM users" });

// Multiple arguments
logger.info("Processing order", "for user", { userId: 1 }, { orderId: 456 });

File Logging

enableFile: true

Logs stored in ./logs/

• Daily rotated files:

  Max size: 20MB
  
  Retention: 14 days  

Log Formats

simple: Plain text

json: Structured JSON

combined: Timestamp + level + colorized + meta data

2025-07-20T12:30:45.123Z [info]: [UserService] User created {"userId":123}

Example Configuration with All Options

const logger = createLogger({
  level: 'debug',
  context: 'ExampleService',
  enableFile: true,
  format: 'combined',
});

Environment-Aware

Defaults to warn level when NODE_ENV=production

Use env: 'development' to override

License

MIT