Easy and Simple Logging to use.
This package provides an easy and simple to use logging to your application.
const log = require('@psteh/es-log');
log.init();
log.debug('Yep, this line here...');
log.info('Nothing to see here folks...');
log.warn('This line looks sus');
log.error('Line just got serious');
log.fatal('EMERGENCY MEETING!');| Property | Type | Default | Description |
|---|---|---|---|
| path | string | ./ | Path to log file |
| filename | string | log.log | File name |
| level | string | DEBUG | Log level Accepts one of following level: - DEBUG - INFO - WARN - ERROR - FATAL |
| size | integer | 50 | Maximum size of log (mb) |
| transactionIdLength | integer | 10 | Length of transactionId Note: transactionId will get truncate if ID provided is longer than set |
| logToConsole | boolean | true | Print log to console |
| datetime | object | {} | Options for datetime (refer below) |
| datetime.format | string | YYYYMMDD HH:mm:ss.SSS | Datetime format |
| datetime.timezone | string | UTC | Timezone for datetime |
const log = require('@psteh/es-log');
log.init({
path: './logs',
filename: 'log.log',
level: 'DEBUG',
size: 50,
transactionIdLength: 10,
logToConsole: false,
datetime: {
format: 'YYYYMMDD HH:mm:ss.SSS',
timezone: 'UTC'
}
});
log.debug('Yep, this line here...');
log.info('Nothing to see here folks...');
log.warn('This line looks sus');
log.error('Line just got serious');
log.fatal('EMERGENCY MEETING!');
// prints
// [20200101 000123.360][ ] Yep, this line here
// [20200101 000123.369][ ] Nothing to see here folks...
// [20200101 000123.372][ ] This line looks sus
// [20200101 000123.376][ ] Line just got serious
// [20200101 000123.380][ ] EMERGENCY MEETING!You can pass in transactionId to note the whole transaction of a process.
Note: transactionId takes in maximum length of 10 characters
log.debug({ transactionId: 'AU2020', message: 'Yep, this line here...'});
log.info({ transactionId: 'AU2020', message: 'Nothing to see here folks...'});
log.warn({ transactionId: 'AU2020', message: 'This line looks sus'});
log.error({ transactionId: 'AU2020', message: 'Line just got serious'});
log.fatal({ transactionId: 'AU2020', message: 'EMERGENCY MEETING!'});
// prints
// [20200101 000123.360][AU2020 ] Yep, this line here
// [20200101 000123.369][AU2020 ] Nothing to see here folks...
// [20200101 000123.372][AU2020 ] This line looks sus
// [20200101 000123.376][AU2020 ] Line just got serious
// [20200101 000123.380][AU2020 ] EMERGENCY MEETING!