Simple and lightweight logger that writes to a stream.
This module is like console-log-level but instead of
using the console object it uses a given stream.
Log levels supported: trace, debug, info, warn, error and fatal.
npm install --save stream-log-level
var logger = require('stream-log-level');
var log = logger();
log.trace('a'); // => does nothing
log.debug('b'); // => does nothing
log.info('c'); // => writes 'c\n' to STDOUT
log.warn('d'); // => writes 'd\n' to STDOUT
log.error('e'); // => writes 'e\n' to STDOUT
log.fatal('f'); // => writes 'f\n' to STDOUTThe logger can be configured by passing in an options object:
var logger = require('stream-log-level');
var log = logger({
prefix: function () {
return new Date().toISOString();
},
level: 'info'
});Supported options:
| Name | Description | Type | Default value |
|---|---|---|---|
| level | Specify the log level | String |
info |
| prefix | Set a prefix for all log messages |
String or Function
|
undefined |
| stream | The stream to write to | Stream |
process.stdout |