graalvm/elide.runtime.intrinsics.js.node.events/EventEmitter/prependOnceListener

prependOnceListener

abstract fun prependOnceListener(eventName: String, listener: Value)

abstract fun prependOnceListener(eventName: String, listener: EventListener)

Adds a one-time listener function for the event named eventName to the beginning of the listener array. The next time eventName is triggered, this listener is removed, and then invoked.

Parameters

eventName

The name of the event.

listener

The callback function.