A minimal event emitter.
new EventEmitter()
Constructs a new event emitter instance.
EventEmitter#on(evt: string, fn: function, [ctx: Object]): EventEmitter
Registers an event listener.
EventEmitter#off([evt: string], [fn: function]): EventEmitter
Removes an event listener or any matching listeners if arguments are omitted.
EventEmitter#emit(evt: string, ...args: *): EventEmitter
Emits an event by calling its listeners with the specified arguments.
License: BSD 3-Clause License