nanobus 
Tiny message bus.
Usage
var nanobus = require('nanobus')
var bus = nanobus()
bus.on('foo', function (color) {
console.log('color is', color)
})
bus.emit('foo', 'blue')
FAQ
Why not use the Node API?
We had the requirement for a * event to catch all calls, and figured we could improve the file size at the same time. This library is about 1/3rd the size of Node's version. And it was easy to build, so yeah good enough of an excuse hah.
How do I listen for replies?
You can do this by using the .once() listener and establishing a convention around naming schemas.
bus.on('foo', function (color) {
console.log('foo called')
bus.emit('foo:res')
})
bus.once('foo:res', function () {
console.log('response received')
})
bus.emit('foo')
When shouldn't I use this package?
If you're only writing code that runs inside Node and don't need a '*' listener, consider using the built-in event emitter API instead.
Are the emitters asynchronous?
No. If you're interested in doing that, use something like nanotick to batch events and ensure they run asynchronously.
API
bus = nanobus([name])
Create a new nanobus instance. Optionally takes a name that will be used for tracing in the browser using the performance.mark / performance.measure API.
bus.emit(eventName, [data])
Emit an event. Arbitrary data can optionally be passed as an argument. '*' listeners run after named listeners.
bus.on(eventName, listener([data]))
bus.addListener(eventName, listener([data]))
Listen to an event. If the event name is '*' the listener signature is listener(eventName, [data], [performanceTimingId]).
bus.prependListener(eventName, listener([data]))
Listen to an event, but make sure it's pushed to the start of the listener queue. If the event name is '*' the listener signature is listener(eventName, [data]).
bus.once(eventName, listener([data]))
Listen to an event, and clear it after it's been called once. If the event name is '*' the listener signature is listener(eventName, [data], [performanceTimingId]).
bus.prependOnceListener(eventName, listener([data]))
Listen to an event, and clear it after it's been called once. If the event name is '*' the listener signature is listener(eventName, [data]).
bus.removeListener(eventName, listener)
Remove a specific listener to an event.
listeners = bus.listeners(eventName)
Return all listeners for a given event. '*' listeners are not included in this list. Use bus.listeners('*') to get a list of '*' listeners.
bus.removeAllListeners([eventName])
Remove all listeners to an event. If no event name is passed, removes all listeners on the message bus. '*' listeners are not removed unless eventName is * or no event name is passed.
