Small namespaced stdout / stderr logger with a timestamp for the browser and Node.js
npm install namespaced-console-logger
Minimal namespaced stdout / stderr logger with a timestamp for the browser and Node.js.
The logger satisfies three requirements below and attempts to do nothing else:
1. Is small: has no dependencies & <50 loc (for the browser)
2. Has a timestamp
3. Has a namespace
Example output:
``
2015-08-10T20:09:20.526Z (namespace) INFO: Hello world!
`js
import createLoggers from 'namespaced-console-logger';
const loggers = createLoggers();
const logger = loggers.get('namespace');
logger.info('Hello %s!', 'world');
`
- createLoggers() takes a minimum logging level, which is one of: ['info', 'warn', 'error'] and defaults to info. For example if you select warn, all info logs will be ignored. warn and error logs will be displayed.
Support for formatting and arbitrary metadata
`js
import createLoggers from 'namespaced-console-logger';
const loggers = createLoggers('info', '{{timestamp}} {{hostname}} {{calculatedValue}} ({{namespace}}) {{level}}:', { hostname: 'machinename', calculatedValue: () => { return 1 + 2; } });
const logger = loggers.get('namespace');
//2015-08-10T20:09:20.526Z machinename 3 (namespace) INFO: Hello world!
logger.info('Hello %s!', 'world');
``