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authorFlorian Dold <florian.dold@gmail.com>2016-10-10 03:43:44 +0200
committerFlorian Dold <florian.dold@gmail.com>2016-10-10 03:43:44 +0200
commitabd94a7f5a50f43c797a11b53549ae48fff667c3 (patch)
treeab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/glogg/README.md
parenta0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff)
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+# glogg
+
+[![Travis Build Status](https://img.shields.io/travis/undertakerjs/glogg/master.svg?label=travis&style=flat-square)](https://travis-ci.org/undertakerjs/glogg)
+
+Global logging utility
+
+## Usage
+
+```js
+var getLogger = require('glogg');
+
+var logger = getLogger('my-namespace');
+
+// logs strings
+logger.debug('The MOST verbose!');
+logger.info('Some important info');
+logger.warn('All the warnings to you');
+logger.error('OH NO! SOMETHING HAPPENED!');
+
+// supports util.format!
+logger.info('%s style!', 'printf');
+
+// log anything
+logger.debug({ my: 'obj' });
+logger.info([1, 2, 3]);
+
+// somewhere else
+logger.on('info', function(msg){
+ // do something with msg
+});
+
+// must be handled to avoid crashing process
+logger.on('error', function(msg){
+ // now it won't crash
+});
+```
+
+## API
+
+__Note: This module makes no assumptions about the log levels and they will always
+be emitted. If you are looking to filter some out, your listeners will need to have
+extra logic.__
+
+### getLogger([namespace])
+
+Create a new logger at the given namespace (or the default if no namespace is provided).
+Returns an augmented [`sparkles`](https://github.com/phated/sparkles) EventEmitter object
+with 4 methods: `debug()`, `info()`, `warn()` and `error()`. When called, these methods emit
+an event with the same name. If the first argument is a string, the arguments
+are passed through node's `util.format()` before being emitted. Other parts
+of a node program can get the logger by namespace and listen for the events to
+be emitted.
+
+#### logger.debug(msg)
+
+Emits a `debug` event with the given `msg`.
+
+If the first argument is a string, all arguments are passed to node's
+`util.format()` before being emitted.
+
+#### logger.info(msg)
+
+Emits a `info` event with the given `msg`.
+
+If the first argument is a string, all arguments are passed to node's
+`util.format()` before being emitted.
+
+#### logger.warn(msg)
+
+Emits a `warn` event with the given `msg`.
+
+If the first argument is a string, all arguments are passed to node's
+`util.format()` before being emitted.
+
+#### logger.error(msg)
+
+Emits a `error` event with the given `msg`.
+
+If the first argument is a string, all arguments are passed to node's
+`util.format()` before being emitted.
+
+__Note: You must handle this event in some way or the node process will crash
+when an `error` event is emitted.__
+
+#### logger.on(event, fn)
+
+Standard API from node's `EventEmitter`. Use this to listen for events from
+the logger methods.
+
+## License
+
+MIT