Note
This repo has been archived with the library moved to the Virtru js-lib-monorepo.
Event emitter component.
$ component install component/emitter
The Emitter may also be used as a mixin. For example
a "plain" object may become an emitter, or you may
extend an existing prototype.
As an Emitter instance:
var Emitter = require('emitter');
var emitter = new Emitter;
emitter.emit('something');As a mixin:
var Emitter = require('emitter');
var user = { name: 'tobi' };
Emitter(user);
user.emit('im a user');As a prototype mixin:
var Emitter = require('emitter');
Emitter(User.prototype);Register an event handler fn.
Register a single-shot event handler fn,
removed immediately after it is invoked the
first time.
Remove event handler fn, or pass only the event
name to remove all handlers for event.
Emit an event with variable option args.
Return an array of callbacks, or an empty array.
Check if this emitter has event handlers.