@dbb/e
Pub/Sub module for Node.js
Installation
npm install @dbb/e
Docs
on(eventName, callback, [context], [once])
Bind a callback to an event and an optional context
Parameters
eventName: String
callback: Function
context: Object, reference to the calling context
once: Boolean, If true, the callback will be removed once fired
once(eventName, callback, [context])
Bind a callback to an event and fire it only once
Parameters
eventName: String
callback: Function
context: Object, reference to the calling context
fire(eventName, [...arguments])
Call all callbacks bound to an event
Parameters
eventName: String
arguments: Mixed, zero or more optional arguments
remove([eventName], [callback], [context])
Remove an event handler from an event
If no eventName is passed, remove all events and event handlers.
If an eventName but no event handlers is passed, remove all event handlers for that event and remove the event.
If an eventName and event handlers are passed, remove event handlers with matching eventName and context.
Parameters
eventName: String
callback: Function
context: Object, reference to the calling context
getEvents([eventName])
If debug is true: given an eventName, returns all event handlers associated with that event.
With no event name passed, returns the whole event map.
If debug is false: returns an empty object or array.
Parameters
eventName: String
Returns: Object | Array
debug Boolean
If true (or a value which evaluates to true) enable getEvents().