class EventEmitter<TSelf>
package js.node.events
extended by ChildProcess, Worker, Socket, Domain, FSWatcher, Server, Interface, REPLServer, SecurePair, Cluster, Process, Stream
Static variables
staticdefaultMaxListeners:Int
By default, a maximum of 10 listeners can be registered for any single
event. This limit can be changed for individual EventEmitter instances
using the emitter.setMaxListeners(n) method. To change the default
for all EventEmitter instances, the EventEmitter.defaultMaxListeners
property can be used. If this value is not a positive number, a TypeError
will be thrown.
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Constructor
Methods
addListener<T>(eventName:Event<T>, listener:T):TSelf
Alias for emitter.on(eventName, listener).
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emit<T>(eventName:Event<T>, args:Rest<Dynamic>):Bool
Synchronously calls each of the listeners registered for the event named
eventName, in the order they were registered, passing the supplied arguments
to each.
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eventNames():Array<EitherType<String, Symbol>>
Returns an array listing the events for which the emitter has registered
listeners. The values in the array will be strings or Symbols.
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getMaxListeners():Int
Returns the current max listener value for the EventEmitter which is either
set by emitter.setMaxListeners(n) or defaults to
EventEmitter.defaultMaxListeners.
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listenerCount<T>(eventName:Event<T>):Int
Returns the number of listeners listening to the event named eventName.
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listeners<T>(eventName:Event<T>):Array<T>
Returns a copy of the array of listeners for the event named eventName.
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on<T>(eventName:Event<T>, listener:T):TSelf
Adds the listener function to the end of the listeners array for the
event named eventName. No checks are made to see if the listener has
already been added. Multiple calls passing the same combination of eventName
and listener will result in the listener being added, and called, multiple
times.
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once<T>(eventName:Event<T>, listener:T):TSelf
Adds a one-time listener function for the event named eventName. The
next time eventName is triggered, this listener is removed and then invoked.
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prependListener<T>(eventName:Event<T>, listener:T):TSelf
Adds the listener function to the beginning of the listeners array for the
event named eventName. No checks are made to see if the listener has
already been added. Multiple calls passing the same combination of eventName
and listener will result in the listener being added, and called, multiple
times.
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prependOnceListener<T>(eventName:Event<T>, listener:T):TSelf
Adds a one-time listener function for the event named eventName to the
beginning of the listeners array. The next time eventName is triggered, this
listener is removed, and then invoked.
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rawListeners<T>(eventName:Event<T>):Array<T>
Returns a copy of the array of listeners for the event named eventName,
including any wrappers (such as those created by .once()).
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removeAllListeners<T>(?eventName:Event<T>):TSelf
Removes all listeners, or those of the specified eventName.
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removeListener<T>(eventName:Event<T>, listener:T):TSelf
Removes the specified listener from the listener array for the event named
eventName.
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setMaxListeners(n:Int):Void
By default EventEmitters will print a warning if more than 10 listeners are
added for a particular event. This is a useful default that helps finding
memory leaks. Obviously, not all events should be limited to just 10 listeners.
The emitter.setMaxListeners() method allows the limit to be modified for this
specific EventEmitter instance. The value can be set to Infinity (or 0)
to indicate an unlimited number of listeners.
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