loglevel Message prefix plugin   

Plugin for loglevel which allows defining prefixes for log messages

Usage

$3

Clone the sources and install the package (In the source directory) on command line using npm:

``sh
npm install
`

Testing

Run the following NPM script to lint, test and check coverage of the code:

`javascript

npm run check

`

#### AMD

`javascript

define(['loglevel', 'loglevel-message-prefix'], function(log, loglevelMessagePrefix) {

loglevelMessagePrefix(log, {
staticPrefixes: ['foobar']
});

log.warn('TEST');

});

`

#### Node.js require

`javascript

var log = require('loglevel');
var loglevelMessagePrefix = require('loglevel-message-prefix');

loglevelMessagePrefix(log, {
staticPrefixes: ['foobar']
});

log.warn('TEST');

`

$3

Code:

`javascript

var log = require('loglevel-message-prefix')(require('loglevel'), {
prefixes: ['level'],
staticPrefixes: ['foo', 'bar'],
separator: '/'
});

log.setLevel('info');

log.info('Testing');

`

Output:

`
[INFO/foo/bar]: Testing

`

Configuration

The configuration object is passed as the second argument to the function. Following properties are supported ():

- prefixes: An array of predefined dynamic prefixes that are to be used. Defaults to: ['timestamp', 'level']. Available prefixes are:
- timestamp: Add locale-specific timestamp
- level: Add log level prefix
- staticPrefixes: An array of strings that should be added after dynamic prefixes (E.g. 'foo'). Defaults to none.
- prefixFormat: A string template to format the prefix (%p is replaced with the prefix). Defaults to [%p]:

- separator: String used to separate prefixes. Defaults to single whitespace ( ).
- options: Options for dynamic prefixes. Available options are:
- timestamp: An object of properties for date formatting. Available properties are: locale, timezone and hour12. Defaults to {hour12: false}`

The properties are defined the schema file.

License and copyright

Copyright (c) 2015-2017 University Of Helsinki (The National Library Of Finland)

This project's source code is licensed under the terms of MIT License.