`once()` #

Available since 2.9.0

Listens to an event emitted with BackendCluster.broadcast.

The registered listener will be called exactly once, after which it will be removed from the listeners list.

once (event: string, listener: ClusterEventHandler): Promise<void>

Argument	Type	Description
`event`	string	Event name
`listener`	ClusterEventHandler	Listener function. Called exactly once.

Usage #

app.cluster.once('some:event', payload => {
  // ...listener code...
})